Ironhorsem General Purpose AC Motors Manual Number: IH-MT-AC_UMW Motor Series: MTR (11th Ed. – 06/29/2022) - page 1
General Purpose
AC Motors
Manual Number: IH-MT-AC_UMW
Motor Series:
MTR
MTR2
MTRP
MTRJ
MTDP
MTF2
MTSS
MTCP2
Warnings
~ WARNING ~
Thank you for purchasing automation equipment from Automationdirect.com™, doing business as
AutomationDirect. We want your new automation equipment to operate safely. Anyone who installs or uses this
equipment should read this publication (and any other relevant publications) before installing or operating the
equipment.
To minimize the risk of potential safety problems, you should follow all applicable local and national codes that
regulate the installation and operation of your equipment. These codes vary from area to area and usually change
with time. It is your responsibility to determine which codes should be followed, and to verify that the equipment,
installation, and operation are in compliance with the latest revision of these codes.
At a minimum, you should follow all applicable sections of the National Fire Code, National Electrical Code, and the
codes of the National Electrical Manufacturer’s Association (NEMA). There may be local regulatory or government
offices that can also help determine which codes and standards are necessary for safe installation and operation.
Equipment damage or serious injury to personnel can result from the failure to follow all applicable codes and
standards. We do not guarantee the products described in this publication are suitable for your particular
application, nor do we assume any responsibility for your product design, installation, or operation.
Our products are not fault-tolerant and are not designed, manufactured or intended for use or resale as on-line
control equipment in hazardous environments requiring fail-safe performance, such as in the operation of nuclear
facilities, aircraft navigation or communication systems, air traffic control, direct life support machines, or weapons
systems, in which the failure of the product could lead directly to death, personal injury, or severe physical or
environmental damage (“High Risk Activities”). AutomationDirect specifically disclaims any expressed or implied
warranty of fitness for High Risk Activities.
For additional warranty and safety information, see the Terms and Conditions section of our catalog. If you have
any questions concerning the installation or operation of this equipment, or if you need additional information,
please call us at 770-844-4200.
This publication is based on information that was available at the time it was printed. At AutomationDirect we
constantly strive to improve our products and services, so we reserve the right to make changes to the products
and/or publications at any time without notice and without any obligation. This publication may also discuss
features that may not be available in certain revisions of the product.
Trademarks
This publication may contain references to products produced and/or offered by other companies. The product
and company names may be trademarked and are the sole property of their respective owners. AutomationDirect
disclaims any proprietary interest in the marks and names of others.
Copyright 2007-2020 Automationdirect.com™ Incorporated
All Rights Reserved
No part of this manual shall be copied, reproduced, or transmitted in any way without the prior, written consent of
Automationdirect.com™ Incorporated. AutomationDirect retains the exclusive rights to all information included in
this document.
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page W-1
Warnings
~ AVERTISSEMENT ~
Nous vous remercions d’avoir acheté l’équipement d’automatisation de Automationdirect.com™, en faisant des
affaires comme AutomationDirect. Nous tenons à ce que votre nouvel équipement d’automatisation fonctionne en
toute sécurité. Toute personne qui installe ou utilise cet équipement doit lire la présente publication (et toutes les
autres publications pertinentes) avant de l’installer ou de l’utiliser.
Afin de réduire au minimum le risque d’éventuels problèmes de sécurité, vous devez respecter tous les codes
locaux et nationaux applicables régissant l’installation et le fonctionnement de votre équipement. Ces codes
diffèrent d’une région à l’autre et, habituellement, évoluent au fil du temps. Il vous incombe de déterminer les
codes à respecter et de vous assurer que l’équipement, l’installation et le fonctionnement sont conformes aux
exigences de la version la plus récente de ces codes.
Vous devez, à tout le moins, respecter toutes les sections applicables du Code national de prévention des
incendies, du Code national de l’électricité et des codes de la National Electrical Manufacturer’s Association
(NEMA). Des organismes de réglementation ou des services gouvernementaux locaux peuvent également vous
aider à déterminer les codes ainsi que les normes à respecter pour assurer une installation et un fonctionnement
sûrs.
L’omission de respecter la totalité des codes et des normes applicables peut entraîner des dommages à
l’équipement ou causer de graves blessures au personnel. Nous ne garantissons pas que les produits décrits dans
cette publication conviennent à votre application particulière et nous n’assumons aucune responsabilité à l’égard
de la conception, de l’installation ou du fonctionnement de votre produit.
Nos produits ne sont pas insensibles aux défaillances et ne sont ni conçus ni fabriqués pour l’utilisation ou la
revente en tant qu’équipement de commande en ligne dans des environnements dangereux nécessitant une
sécurité absolue, par exemple, l’exploitation d’installations nucléaires, les systèmes de navigation aérienne ou de
communication, le contrôle de la circulation aérienne, les équipements de survie ou les systèmes d’armes, pour
lesquels la défaillance du produit peut provoquer la mort, des blessures corporelles ou de graves dommages
matériels ou environnementaux («activités à risque élevé»). La société AutomationDirect nie toute garantie
expresse ou implicite d’aptitude à l’emploi en ce qui a trait aux activités à risque élevé.
Pour des renseignements additionnels touchant la garantie et la sécurité, veuillez consulter la section Modalités
et conditions de notre documentation. Si vous avez des questions au sujet de l’installation ou du fonctionnement
de cet équipement, ou encore si vous avez besoin de renseignements supplémentaires, n’hésitez pas à nous
téléphoner au 770-844-4200.
Cette publication s’appuie sur l’information qui était disponible au moment de l’impression. À la société
AutomationDirect, nous nous efforçons constamment d’améliorer nos produits et services. C’est pourquoi nous
nous réservons le droit d’apporter des modifications aux produits ou aux publications en tout temps, sans préavis
ni quelque obligation que ce soit. La présente publication peut aussi porter sur des caractéristiques susceptibles de
ne pas être offertes dans certaines versions révisées du produit.
Marques de commerce
La présente publication peut contenir des références à des produits fabriqués ou offerts par d’autres entreprises.
Les désignations des produits et des entreprises peuvent être des marques de commerce et appartiennent
exclusivement à leurs propriétaires respectifs. AutomationDirect nie tout intérêt dans les autres marques et
désignations.
Copyright 2007-2020 Automationdirect.com™ Incorporated
Tous droits réservés
Nulle partie de ce manuel ne doit être copiée, reproduite ou transmise de quelque façon que ce soit sans le
consentement préalable écrit de la société Automationdirect.com™ Incorporated. AutomationDirect conserve les
droits exclusifs à l’égard de tous les renseignements contenus dans le présent document.
Page W-2
User Manual Revision History
Publication History
Please include the Manual Number and the Manual Issue, both shown below, when communicating with Technical
Support regarding this publication.
Manual Number:
IH-MT-AC_UMW
Issue:
11th Edition
Issue Date:
June 29, 2022
Publication History
Issue
Date
Description of Changes
First Edition
09/2007
Original Issue
1st Ed., Rev. A
11/2007
Chapter 2 wiring diagrams
User manual name change (previously “IH-USER-M”).
Deleted obsolete motor MTR-002-1AB18.
Second Edition
12/2008
Added MTC-xxx-xxxxxCK cast iron TC-frame motors.
Revised specs for existing MTC-xxx-xxxxx cast iron T-frame motors.
Third Edition
06/2009
Added 1200 and 3600 rpm motors
Added Premium Efficiency motors and replacement parts for cast-iron motors.
Fourth Edition
06/2011
Some minor specification changes for existing motors.
Added MTSS stainless-steel motors & accessories.
Fifth Edition
06/2012
Added MTR-1P5-1AB36 motor & accessories.
5th Ed., Rev. A
08/2012
Revised MTSS rotor inertia data (chapter 1)
User manual name change (previously “IH-USER-M-WO”).
Added MTF & MTR2 motors.
Sixth Edition
10/2014
Added MTCP motor 50Hz specs (chapter 1).
Added single-phase motor reversing wiring diagrams (chapter 2).
Ch1, MTF specification table note.
6th Ed., Rev. A
07/17/2015
Ch2, MTR2 wiring diagram.
User manual name change (previously “IH-MT-AC-USER-M-WO”).
Ch1, Added MTRP (Premium) Motors.
7th Edition
01/12/2017
Ch2, “Inspection Before Startup,” “Motor Mounting Orientation.”
Ch4, Added MTR2 accessory.
Ch1, Added MTR2 Motors.
8th Edition
01/18/2018
Ch2, Added MTR2 mounting dimensions.
Ch5, Added performance curves for MTR2 motors.
Ch3, Bearing #s
8th Ed., Rev. A
05/23/2018
Ch5, Added additional performance curves for MTR2 motors, added curves for MTRP motors
Replaced MTCP motors with MTCP2 throughout manual.
9th Edition
12/05/2018
Added new Chapter 6 for legacy motors and moved MTC, MTCP, MTR, and MTSS motors info to
Chapter 6.
Ch2, Revised shaft diameter dimensions for MTCP2 254T(C)- & 256T(C)-Frame motors.
9th Ed., Rev. A
03/22/2019
Ch5, Consolidated Shipping Crate Dimensions table.
Ch6, Consolidated and rearranged legacy motors spec and performance data tables.
MTF Motors moved to Legacy Motors, Chapter 6.
10th Ed.
09/02/2020
MTF2 Farm Duty Motors added.
MTDP Open Drip-proof motors added.
10th Ed., Rev. A
01/06/2021
MTDP specification changes (affects motors manufactured after September 2020), Chapter 1
11th Ed.
06/29/2022
MTRJ Jet Pump motors added
IronHorse® General PurposeAC Motors User Manual - 11th Ed. - 06/29/2022
Page H-1
User Manual Table of Contents
Contents of This User Manual
IronHorse General Purpose AC Motors User Manual
CF-1
Warnings
W-1
~ WARNING ~
W-1
Trademarks
W-1
~ AVERTISSEMENT ~
W-2
Marques de commerce
W-2
User Manual Revision History
H-1
IronHorse General Purpose AC Motors User Manual Table of Contents
TOC-1
Chapter 1: Getting Started
1-1
Manual Overview
1-2
Overview of this Publication
1-2
Who Should Read This Manual
1-2
Technical Support
1-2
Special Symbols
1-2
Available Models
1-3
MTF2 Conveyor/Farm-Duty T-Frame Single-Phase Motors - Features and Specifications
1-3
MTR2 Rolled-Steel 56C/56HC-Frame Single-Phase Motors - Features and Specifications 1-4
MTRJ Centrifugal Jet Pump One-Phase Motors - Features and Specifications
1-6
MTDP Open Drip-Proof AC Three-Phase Motors - Features and Specifications
1-7
MTR2 and MTRP Rolled-Steel 56C/56HC-Frame Three-Phase Motors - Features and
Specifications
1-10
MTRJ Centrifugal Jet Pump Three-Phase Motors - Features and Specifications
1-12
MTCP2 Premium-Efficiency Cast-Iron Three-Phase Motors - Features and Specifications 1-13
Receiving and Inspection
1-26
Unpacking
1-26
IronHorse® Part Number Explanation
1-26
Reshipping
1-27
Long Term Storage
1-27
Warranty
1-27
Chapter 2: Mounting and Initial Startup
2-1
Safety Information
2-2
Danger!
2-2
Wiring Notes: PLEASE READ PRIOR TO INSTALLATION.
2-2
Applicable Codes
2-2
Motor Dimensions
2-3
(Dimensions = inches)
2-3
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page TOC-1
Table of Contents
MTF2 T-Frame Single-phase Farm-Duty Motor Dimensions
2-3
MTR2 56(H)C-Frame Single-phase Rolled-steel Motor Dimensions
2-3
MTR2 56C-Frame Three-phase Rolled-steel Motor Dimensions
2-4
MTRP 56HC-Frame Three-phase Rolled-steel Motor Dimensions
2-5
MTDP Open Drip-Proof Three-phase Rolled-steel Motor Dimensions
2-6
MTCP2 Premium-Efficiency T-Frame Three-Phase Motor Dimensions
2-7
MTCP2 Premium-Efficiency TC-Frame Three-Phase Motor Dimensions
2-11
Terminal and Wiring Diagrams
2-13
IronHorse® Single-Phase Motors
2-13
IronHorse® Three-Phase Motors
2-14
Single-Phase Motors Reversing Diagrams
2-15
Motor Mounting
2-17
General Mounting Information
2-17
Motor Mounting Orientation
2-17
Proper Installation Conditions
2-18
Coupling Alignment
2-18
Motor Nameplate & Starter Information
2-19
Typical IronHorse® Motor Nameplate
2-19
Motor Starter Information
2-19
Locked Rotor Amps
2-19
Inspection Before Startup
2-20
Initial Startup Inspection
2-20
Chapter 3: Maintenance
3-1
Routine Maintenance
3-2
Bearing Size Information
3-3
Chapter 4: Accessories
4-1
Replacement Parts
4-2
Junction boxes, c-flanges, Drive Bells, and Current Diverter Rings for IronHorse® MTDP
Drip-Proof Three-Phase Motors
4-2
Capacitors and Centrifugal Switches for IronHorse® Single-Phase Motors
4-4
Spare/Replacement Parts for MTF2 Single-Phase Farm-Duty Motors
4-4
Spare/Replacement Parts for MTR2/MTRJ Single-Phase Motors
4-6
Spare/Replacement Parts for MTR2/MTRP/MTRJ Three-Phase Motors
4-7
Spare/Replacement Parts for MTCP2 Premium-Efficiency Three-Phase Motors
4-8
C-Flange Kits
4-10
C-Flange Kits for MTCP2 Premium-Efficiency Three-Phase Motors
4-10
STABLE™ Slide Bases
4-12
Slide Base Selection
4-13
Slide Base Dimensions
4-14
Chapter 5: Reference Information
5-1
Using IronHorse® Motors with AC Drives
5-2
Voltage Spike Considerations for AC Drive Control
5-3
Radial Overhung Load
5-4
F1 and F2 Mounting
5-5
Junction Box Dimensions
5-6
Minimum Sheave Diameters
5-7
Decibel Levels
5-8
Page TOC-2
Table of Contents
Shipping Crate Dimensions
5-10
Performance Curves for MTF2 Motors
5-11
Performance Curves for MTR2 Motors
5-16
Performance Curves for MTDP Motors
5-34
Performance Curves for MTRP Motors
5-50
Speed/Torque Curves for MTCP2 Motors (1800 RPM)
5-57
Speed/Torque Curves for MTCP2 Motors (1200 RPM)
5-64
Speed/Torque Curves for MTCP2 Motors (3600 RPM)
5-68
Chapter 6: Legacy Motors
6-1
Chapter Overview
6-3
MTCP Series Motors
6-3
MTCP Features and Specifications
6-3
MTCP Specifications
6-4
MTCP Motor Performance Data
6-6
MTCP Motor Dimensions
6-10
MTCP Junction Box Dimensions
6-16
MTCP Decibel Levels
6-17
Spare/Replacement Parts for MTCP Premium-Efficiency Three-Phase Motors
6-18
MTCP Bearing Size Information
6-20
MTR Series Motors
6-21
MTR Features and Specifications (Single-Phase Motors)
6-21
MTR Features and Specifications (Three-Phase Motors)
6-22
MTR Motor Dimensions
6-24
MTR Junction Box Dimensions
6-25
MTR Terminal and Wiring Diagrams
6-25
MTR Motors Decibel Levels
6-25
Spare/Replacement Parts for MTR Single-Phase Motors
6-26
MTR Bearing Size Information
6-26
MTSS Series Motors
6-27
MTSS Features and Specifications
6-27
MTSS Motor Dimensions
6-29
MTSS Junction Box Dimensions
6-30
MTSS Decibel Levels
6-30
MTSS Motor Mounting
6-31
Spare/Replacement Parts for MTSS Stainless-Steel Three-Phase Motors
6-32
MTSS Bearing Size Information
6-32
MTC EPAct Series Motors
6-33
MTC Features and Specifications
6-33
MTC Motor Dimensions
6-41
MTC Junction Box Dimensions
6-46
MTC Motors Decibel Levels
6-47
C-Flange Kits for MTC EPAct Three-Phase Motors
6-47
MTC Motors Bearing Size Information
6-49
MTF Farm-Duty T-Frame Single-Phase Motors - Features and Specifications
6-50
Motor Dimensions
6-51
MTF T-Frame Single-phase Farm-Duty Motor Dimensions
6-51
Terminal and Wiring Diagrams
6-51
Replacement Parts
6-52
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page TOC-3
Table of Contents
Capacitors and Centrifugal Switches for IronHorse® Single-Phase Motors
6-52
Spare/Replacement Parts for MTF Single-Phase Farm-Duty Motors
6-52
Junction Box Dimensions
6-53
Page TOC-4
Chapterr
Getting Started
1
Table of Contents
Manual Overview
1-2
Overview of this Publication
1-2
Who Should Read This Manual
1-2
Technical Support
1-2
Special Symbols
1-2
Available Models
1-3
MTF2 Conveyor/Farm-Duty T-Frame Single-Phase Motors - Features and Specifications
1-3
MTR2 Rolled-Steel 56C/56HC-Frame Single-Phase Motors - Features and Specifications
1-4
MTRJ Centrifugal Jet Pump One-Phase Motors - Features and Specifications
1-6
MTDP Open Drip-Proof AC Three-Phase Motors - Features and Specifications
1-7
MTR2 and MTRP Rolled-Steel 56C/56HC-Frame Three-Phase Motors - Features and Specifications
1-10
MTRJ Centrifugal Jet Pump Three-Phase Motors - Features and Specifications
1-12
MTCP2 Premium-Efficiency Cast-Iron Three-Phase Motors - Features and Specifications
1-13
Receiving and Inspection
1-26
Unpacking
1-26
IronHorse® Part Number Explanation
1-26
Reshipping
1-27
Long Term Storage
1-27
Warranty
1-27
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-1
Chapter 1: Getting Started
Manual Overview
Overview of this Publication
The IronHorse® General Purpose AC Motor User Manual describes the installation, maintenance and use of
all IronHorse General Purpose Motors.
Who Should Read This Manual
This manual contains important information for those who will install, maintain, use and/or resell any of
the IronHorse motors.
Technical Support
By Telephone:
770-844-4200 (Mon.-Fri., 9:00 a.m.-6:00 p.m. E.T.)
On the Web:
support.automationdirect.com
Our technical support group is glad to work with you in answering your questions. If you cannot find
the solution to your particular application, or, if for any reason you need additional technical assistance,
please call technical support at 770-844-4200. We are available weekdays from 9:00 a.m. to 6:00 p.m.
Eastern Time.
We also encourage you to visit our web site where you can find technical and non-technical information
about our products and our company. Visit us at www.automationdirect.com.
Special Symbols
NOTE: When you see the “notepad” icon in the left-hand margin, the paragraph to its immediate right will be
a special note.
WARNING: When you see the “exclamation mark” icon in the left-hand margin, the paragraph to its immediate right will
be a warning. This information could prevent injury, loss of property, or even death (in extreme cases).
Page 1-2
Chapter 1: Getting Started
Available Models
This manual covers Ironhorse series AC motor models:
MTR, MTR2, MTRP, MTRJ - Black TEFC motors
MTF2 - Green TEFC Farm Duty motors
MTDP - Blue ODP (Open Drip Proof) motors
MTSS- Stainless Steel IP56 TEFC motors
MTCP2- Gray Cast Iron TEFC motors
NOTE: For the MTSP MTSN Stainless Steel IP69K series, see the technical specifications pages. These
are not included in this manual.
MTF2 Conveyor/Farm-Duty T-Frame Single-Phase Motors - Features and Specifications
IronHorse® single-phase farm-duty motor available ratings
are 2hp to 10hp. All models have a TEFC housing (steel
frame with iron end bells) that is fully gasketed for use in dirty
environments. Motors are NEMA H, J, K and L design.
All models include a class-10 manual-reset locked-rotor
thermal protector (motor thermal overload protection must
be provided separately).
We recommend disconnecting power to the motor before reseting the
thermal protector. Do not reset more than twice in succession. The
motor must cool to 40°C (104°F) before a third reset.
Cast-Iron T-Frame 1-Phase Farm-Duty Motor Specifications
Motor Specifications - Single-Phase Farm-Duty Motors (60Hz)
F.L. Amps
Approx
Base
NEMA
Part Number
HP
Voltage*
Service Factor
Housing
@208/
Weight
RPM
Frame
230VAC
(lb)
MTF2-002-1B18-182
2
182T
9.3 / 8.5
67
MTF2-003-1B18
3
13.5 / 12.5
76
208 / 230VAC
1.15 @ 230VAC
184T
TEFC
MTF2-005-1B18
5
1800
L
22.2 / 20.2
100
±10%
1.0 @ 208VAC
IP55
MTF2-7P5-1B18-215
7.5
31.5 / 28.7
134
215T
MTF2-010-1B18
10
45.2 / 38.8
149
* Operate on 230VAC +/- 10% (1.15 @ 230VAC; 1.0 S.F. @ 208V), single-phase power only.
Cast-Iron T-Frame 1-Phase Farm-Duty Motor Performance Data
Performance Data - Single-Phase Farm-Duty Motors (60Hz)
Current @ 230V (Amps)
Torque (lb·ft)
F.L.
F.L.
Rotor
F.L.
Part Number
HP
230V
Full
Locked
Full
Locked
Break
Efficiency
Power
Inertia
RPM
No Load
Load
Rotor
Load
Rotor
down
(%)
Factor
(lb·ft2)
MTF2-002-1B18-182
2
1764
3.0
8.5
78.6
6.01
21.8
22.1
84.0
0.92
0.27
MTF2-003-1B18
3
1769
4.2
12.5
89.2
8.76
24.9
24.3
84.4
0.91
0.34
MTF2-005-1B18
5
1769
6.3
20.2
170.7
14.7
57.2
57.3
86.4
0.92
0.49
MTF2-7P5-1B18-215
7.5
1767
8.2
28.7
238.5
21.91
82.8
82.1
86.6
0.96
0.74
MTF2-010-1B18
10
1765
11.79
38.8
365.8
29.93
119.6
122.6
87.5
0.96
0.85
IronHorse® General PurposeAC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-3
Chapter 1: Getting Started
MTR2 Rolled-Steel 56C/56HC-Frame Single-Phase Motors - Features and Specifications
IronHorse® single-phase 56C/56HC-frame* motors available
ratings are 1/3 hp to 2 hp. All models have a TEFC rolled steel
frame, cast aluminum end bell and removable mounting bases.
Specifications - Rolled-Steel 56C-Frame 1-Phase Motor
Motor Specifications - Single-Phase 56C/56HC-Frame Motors (60Hz except as indicated)
Base
F.L. Amps @
Approx
HP
Voltage
Part Number
RPM
Housing
115V/230V 60Hz
Weight
(110/220V 50Hz)
(lb)
@ 60Hz (50Hz)
1800 RPM
1/3
5.2 / 2.6
MTR2-P33-1AB18
22
(1/4)
(5.4 / 2.7)
IP43
1/2
7.2 / 3.6
MTR2-P50-1AB18
56C
25
(1/3)
TEFC
(7.2 / 6.3)
N
flange
rolled steel
3/4
10.0 / 5.0
MTR2-P75-1AB18
mount
frame
29
(1/2)
1800
115/230
1.15
(9.6 / 4.8)
1
(1500)
(110/220)
(1)
13.0 / 6.5
MTR2-001-1AB18
Cast AL end
36
(3/4)
(12.4 / 6.2)
bell
1-1/2
14.5 / 7.3
MTR2-1P5-1AB18
37
(1)
F1 conduit
(14.0 / 7.0)
L
56HC
box location
2
19.6 / 9.8
MTR2-002-1AB18
44
(1-1/2)
(23.4 / 11.7)
3600 RPM
1/3
5.4 / 2.7
MTR2-P33-1AB36
21
(1/4)
(5.4 / 2.7)
IP43
1/2
6.5 / 3.3
MTR2-P50-1AB36
23
(1/3)
TEFC
(6.4 / 3.2)
N
rolled steel
3/4
9.2 / 4.6
MTR2-P75-1AB36
frame
27
(1/2)
3600
115/230
1.15
(9.2 / 4.6)
56C
1
(3000)
(110/220)
(1)
11.5 / 5.8
MTR2-001-1AB36
Cast AL end
30
(3/4)
(10.2 / 5.1)
bell
1-1/2
13.0 / 6.5
MTR2-1P5-1AB36
31
(1)
F1 conduit
(11.4 / 5.7)
L
box location
2
17.0 / 8.5
MTR2-002-1AB36
37
(1-1/2)
(14.6 / 7.3)
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.
NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions.
Page 1-4
Chapter 1: Getting Started
MTR2 Rolled-Steel 56C/56HC-Frame Single-Phase Motors Features and Specifications (continued)
Performance Data - Rolled-Steel 56C-Frame 1-Phase Motor
Performance Data - Single-Phase 56C/56HC-Frame Motors
(230V / 60Hz data except as indicated)
F.L.
Current @ 115V/230V
HP
Torque (lb·ft)
RPM
(Amps)
Rotor
Part Number
Inertia
(lb·ft2)
230V
@
Locked
Full
Locked
Break
No
Full Load
60Hz (50Hz)
Rotor
Load
Rotor
down
Load
1800 RPM
1/3
MTR2-P33-1AB18
2.05
5.2 / 2.6
33 / 16
1.01
3.54
2.57
63.0
0.58
0.048
(1/4)
1/2
MTR2-P50-1AB18
2.74
7.2 / 3.6
44 / 21
1.49
5.09
3.54
64.5
0.68
0.059
(1/3)
3/4
MTR2-P75-1AB18
3.14
10.0 / 5.0
62 / 30
2.26
7.06
5.16
67.0
0.71
0.074
(1/2)
1725
1
(1425)
MTR2-001-1AB18
4.39
13.0 / 6.5
80 / 40
3.03
9.30
8.23
70.0
0.69
0.095
(3/4)
1-1/2
MTR2-1P5-1AB18
5.23
14.5 / 7.3
110 / 55
4.46
8.70
10.45
77.0
0.84
0.095
(1)
2
MTR2-002-1AB18
8.07
19.6 / 9.8
152 / 76
6.06
12.17
13.81
79.0
0.82
0.121
(1-1/2)
3600 RPM
1/3
MTR2-P33-1AB36
2.14
5.4 / 2.7
37 / 19
0.50
2.18
1.96
59.5
0.72
0.031
(1/4)
1/2
MTR2-P50-1AB36
2.23
6.5 / 3.3
47 / 23
0.74
2.59
2.42
63.0
0.74
0.034
(1/3)
3/4
MTR2-P75-1AB36
2.82
9.2 / 4.6
66 / 33
1.12
4.62
3.44
66.5
0.78
0.041
(1/2)
3450
1
(2850)
MTR2-001-1AB36
3.04
11.5 / 5.8
82 / 41
1.50
4.48
3.83
69.5
0.80
0.047
(3/4)
1-1/2
MTR2-1P5-1AB36
3.90
13.0 / 6.5
109 / 55
2.21
3.22
5.08
77.0
0.94
0.047
(1)
2
MTR2-002-1AB36
4.51
17.0 / 8.5
131 / 65
3.02
4.45
6.82
79.5
0.94
0.060
(1-1/2)
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-5
Chapter 1: Getting Started
MTRJ Centrifugal Jet Pump One-Phase Motors - Features and Specifications
IronHorse® MTRJ Jet Pump motors range in size from 1/3 - 2 HP
at 3600 RPM. All models come in a 56J frame size in a Totally
Enclosed Fan Cooled (TEFC) Enclosure with IP43 protection.
Specifications - Centrifugal Jet Pump AC One-Phase Motor
Motor Specifications - 1-phase
Sound
Base
NEMA
Service
Weight
Drawing
Part Number
HP*
Volts*
Encl.
F.L. Amps*
Power
RPM *
Frame
Factor*
(lb)
Links
(dB)
C-face With Removable Base
1/3
5.0/2.5
MTRJ-P33-1AB36J
19.4
PDF
(1/4)
(4.4/2.2)
1/2
6.6/ 3.3
MTRJ-P50-1AB36J
21
PDF
(1/3)
(5.4/2.7)
80 dB(A)
3/4
9.0 / 4.5
MTRJ-P75-1AB36J
25.5
PDF
(1/2)
3600
115/230 VAC
(8.0/4.0)
TEFC
56J
1.15 (1)
(3000)
(110/220)
11.4/5.7
MTRJ-001-1AB36J
1 (3/4)
28.3
PDF
(10.4/5.2)
1 1/2
13.0 / 6.5
MTRJ-1P5-1AB36J
30.7
PDF
(1)
(11.8/5.9)
85 dB(A)
2 (1
17.2 / 8.6
MTRJ-002-1AB36J
36.6
PDF
1/2)
(14.8/7.4)
*@ 60Hz (@ 50Hz)
Performance Data - 1-phase
Current
Torque
Part Number
HP*
% of F.L. Torque
C-face With Removable Base - 3600 RPM
1/3
MTRJ-P33-1AB36J
55.0
5.0/2.5
19.51
2.64
0.51
145%
250%
95%
0.0245
(1/4)
85
1/2
MTRJ-P50-1AB36J
59.5
6.6/ 3.3
25.22
3.19
0.76
265%
90%
0.0277
(1/3)
N
130%
3/4
MTRJ-P75-1AB36J
3450
66.0
9.0 / 4.5
47.22
4.95
1.12
220%
100%
81
0.0382
(1/2)
(2850)
MTRJ-001-1AB36J
1 (3/4)
70.0
11.4/5.7
61.78
5.97
1.53
125%
225%
75%
82
0.0458
1 1/2
13.0 /
MTRJ-1P5-1AB36J
78.5
82.74
8.34
2.25
115%
220%
110%
94
0.0472
(1)
6.5
L
2 (1
17.2 /
MTRJ-002-1AB36J
80.0
116.2
8.64
3.06
140%
205%
95%
95
0.0602
1/2)
8.6
*@ 60Hz (@ 50Hz)
Page 1-6
Chapter 1: Getting Started
MTDP Open Drip-Proof AC Three-Phase Motors - Features and Specifications
IronHorse® MTDP, open drip-proof motors range in size from
1hp to 50hp at 1800 rpm and 3hp, 5hp, and 7.5 hp at 3600 rpm.
Frame sizes are available from 143T to 326T. All models have a
rolled steel frame; frames sizes up to 256T have cast aluminum
end bells, while frame sizes of 284T or larger have cast iron end
bells. All frame sizes have a fixed base.
Specifications - Open Drip-Proof AC Three-Phase Motor
Motor Specifications - MTDP Open Drip-Proof Three-Phase Motors (60Hz except as indicated)
Base
F.L. Amps @
Approx
HP
Voltage
Part Number
RPM
Housing
208/230V/460V
Weight
60Hz
(lb)
@ 60Hz (50Hz)
1800 RPM
208-230/460
2.9 / 2.6 / 1.3
MTDP-001-3BD18
1
1800
143T
33.1
VAC
3.1/2.8/1.4*
208-230/460
MTDP-1P5-3BD18
1 1/2
1800
145T
4.6 / 4.2 / 2.1
34.2
VAC
208-230/460
MTDP-002-3BD18
2
1800
145T
5.9 / 5.4 / 2.7
38.6
VAC
208-230/460
7.9 / 7.6 / 3.8
MTDP-003-3BD18
3
1800
182T
68.3
VAC
8.7/7.8/3.9*
208-230/460
13.6 / 12.4 / 6.2
MTDP-005-3BD18
5
1800
184T
91.5
VAC
13.7/12.4/6.2*
208-230/460
20.7 / 18.8 / 9.4
MTDP-7P5-3BD18
7 1/2
1800
213T
140.2
VAC
21.7/19.6/9.8*
1.15
208-230/460
(sine),
ODP
MTDP-010-3BD18
10
1800
BB
215T
28.3 / 25.6/12.8
156.0
VAC
1.0
IP23ODP
(drive)
208-230/460
37.6 / 34.2 / 17.1
MTDP-015-3BD18
15
1800
254T
214.9
VAC
38.5/34.8/17.4*
208-230/460
49.5 / 45.0 / 22.5
MTDP-020-3BD18
20
1800
256T
260.1
VAC
51.5/46.6/23.3*
208-230/460
MTDP-025-3BD18
25
1800
284T
66.3 / 60.0 / 30.0
300.0
VAC
208-230/460
79.4 / 71.8 / 35.9
MTDP-030-3BD18
30
1800
286T
330.0
VAC
77.6/70.2/35.1*
208-230/460
MTDP-040-3BD18
40
1800
324T
105.6 / 95.8 / 47.9
440
VAC
208-230/460
130.3 / 117.4 / 58.7
MTDP-050-3BD18
50
1800
326T
470
VAC
131.2/118.6/59.3*
3600 RPM
208-230/460
7.9 / 7.2 / 3.6
MTDP-003-3BD36
3
3600
145T
39.7
VAC
8.2/7.4/3.7*
1.15
208-230/460
(sine),
ODP
MTDP-005-3BD36
5
3600
B
182T
12.3 / 11.8 / 5.9
64.9
VAC
1.0
IP23
(drive)
208-230/460
18.9 / 17.2 / 8.6
MTDP-7P5-3BD36
7.5
3600
184T
78.1
VAC
19.2/17.4/8.7*
*These specifications apply to motors manufactured after September 2020
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.
IronHorse® General PurposeAC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-7
Chapter 1: Getting Started
MTDP Rolled-Steel Three-Phase Drip-Proof Motors Features and Specifications
Performance Data (For Motors Manufactured After September 2020)
Performance Data - MTDP Rolled Steel Three-Phase Drip-Proof Motors
(230V / 60Hz data except as indicated)
F.L.
HP
Current @ 230/460V (Amps)
Torque (lb·ft)
RPM
Rotor
Part Number
Inertia
(lb·ft2)
230/
@
Full
Locked
Break
460V No
Full Load
Locked Rotor
60Hz (50Hz)
Load
Rotor
down
Load
1800 RPM
MTDP-001-3BD18
1
1742
1.40/0.70
2.8/1.4
21.18/10.59
3.03
9.51
10.03
85.5
0.81
0.09
MTDP-1P5-3BD18
1.5
1747
2.44 / 1.22
4.2 / 2.1
34.52 / 17.26
4.44
15.63
16.56
88.5
0.76
0.09
MTDP-002-3BD18
2
1744
2.96 / 1.48
5.4 / 27
47.24 / 23.62
6.06
21.15
23.45
86.5
0.79
0.10
MTDP-003-3BD18
3
1753
3.74/1.87
7.8/3.9
63.64/31.82
8.80
30.36
31.68
89.5
0.8
0.36
MTDP-005-3BD18
5
1745
4.46 / 2.23
12.4 / 6.2
93.34/46.67
14.90
40.83
46.04
89.5
0.84
0.48
MTDP-7P5-3BD18
7.5
1758
10.56/5.28
19.6/9.8
118.62/59.31
22.02
78.39
81.03
91
0.78
0.95
MTDP-010-3BD18
10
1753
10.24 / 5.12
24.4 / 12.2
160.8 / 80.4
30.14
97.35
100.67
91.7
0.81
1.16
MTDP-015-3BD18
15
1774
11.4/5.7
34.8/17.4
235.6/117.8
43.6
113.36
120.30
93
0.85
2.03
MTDP-020-3BD18
20
1769
13.96/6.98
46.6/23.3
303.4/151.7
59.67
154.54
178.40
93
0.86
2.44
MTDP-025-3BD18
25
1775
24.6 / 12.3
30.0 / 15.0
380 / 190
72.30
175.69
184.37
93.6
0.83
3.25
MTDP-030-3BD18
30
1775
24.8/12.4
70.2/35.1
433/216.5
87.47
252.79
291.28
94.1
0.84
3.69
MTDP-040-3BD18
40
1778
36.8 / 18.4
95.8 / 47.9
630 / 315
118.10
419.26
457.05
94.1
0.84
7.35
MTDP-050-3BD18
50
1781
46.2/23.1
118.6/59.3
771/385.5
146.7
476.78
517.85
94.5
0.83
8.99
MTDP-003-3BD36
3
3441
3.02/1.51
7.4/3.7
63.26/31.63
4.5
18.09
22.28
85.5
0.86
0.07
MTDP-005-3BD36
5
3509
3.64 / 1.82
11.8 / 5.9
94.02 / 47.01
7.43
25.26
26.15
86.5
0.89
0.15
MTDP-7P5-3BD36
7.5
3499
4.86/2.43
17.36/8.68
132.26/66.13
11.02
33.17
41.99
88.5
0.89
0.20
Performance Data - MTDP Rolled Steel Three-Phase Drip-Proof Motors
(190/380V / 50Hz data)
F.L.
Current @ 115V/230V
HP
Torque (lb·ft)
Rotor
RPM
(Amps)
Part Number
Inertia
(lb·ft2)
@
190/380V
Full
Locked
Break
Full Load
Locked Rotor
50Hz
No Load
Load
Rotor
down
1500 RPM
MTDP-001-3BD18
1
1449
1.32/0.66
3.2/1.6
20.4/10.2
3.65
8.21
10.13
84.3
0.82
0.09
MTDP-1P5-3BD18
1.5
1450
2.44/1.22
4.8/2.4
32.6/16.3
5.35
15.69
16.63
85.7
0.78
0.09
MTDP-002-3BD18
2
1448
2.96/1.48
6.4/3.2
44.6/22.3
7.31
21.26
23.57
85.7
0.81
0.1
MTDP-003-3BD18
3
1437
3.7/1.85
9.4/4.7
59.8/29.9
10.8
28.87
30.11
88.7
0.84
0.36
MTDP-005-3BD18
5
1445
4.4/2.2
14.9/7.5
87.0/43.5
18
51.77
58.37
88.7
0.87
0.45
MTDP-7P5-3BD18
7.5
1445
8.2/4.1
23.6/11.8
112/56
26.8
72.9
117.14
90.2
0.84
0.95
MTDP-010-3BD18
10
1455
10.24/5.12
29.4/14.7
152.2/76.1
36.4
97.99
101.3
91.2
0.87
1.16
MTDP-015-3BD18
15
1455
10.0/5.0
41.8/20.9
221.8/110.9
53.3
92
113.96
92.4
0.87
2.03
MTDP-020-3BD18
20
1455
13.8/6.9
56.0/28.0
285.2/142.6
72.7
142.72
235.91
92.4
0.87
2.44
MTDP-025-3BD18
25
1455
24.6/12.3
72.0/36.0
359.6/179.8
88.3
178.81
187.64
93.2
0.84
3.25
MTDP-030-3BD18
30
1455
23.8/11.9
84.2/42.1
406.2/203.1
106.6
221.94
232.6
93.7
0.85
3.69
MTDP-040-3BD18
40
1460
36.8/18.4
115.0/57.5
596/298
142.5
421.66
459.56
93.8
0.86
7.35
MTDP-050-3BD18
50
1460
44.6/22.3
142.71.2
710.6/355.3
178.6
407.92
442.75
94.1
0.85
8.99
MTDP-003-3BD36
3
2850
2.82/1.41
8.8/4.4
47.0/23.5
5.44
17.71
21.83
84.1
0.89
0.07
MTDP-005-3BD36
5
2919
3.64/1.82
13.6/6.8
91.8/45.9
8.99
25.47
26.37
85.6
0.89
0.15
MTDP-7P5-3BD36
7.5
2870
4.6/2.3
21.0/10.5
128.2/64.1
13.37
32.52
41.11
87.7
0.9
0.2
Page 1-8
Chapter 1: Getting Started
Performance Data (For Motors Manufactured Prior to September 2020)
Performance Data - MTDP Rolled Steel Three-Phase Drip-Proof Motors
(230V / 60Hz data except as indicated)
F.L.
HP
Current @ 230/460V (Amps)
Torque (lb·ft)
RPM
Rotor
Part Number
Inertia
(lb·ft2)
230/
@
Full
Locked
Break
460V No
Full Load
Locked Rotor
60Hz (50Hz)
Load
Rotor
down
Load
1800 RPM
MTDP-001-3BD18
1
1745
1.32 / 0.66
2.6 / 1.3
21.46 / 10.73
3.03
8.18
10.09
85.5
0.81
0.09
MTDP-1P5-3BD18
1.5
1747
2.44 / 1.22
4.2 / 2.1
34.52 / 17.26
4.44
15.63
16.56
88.5
0.76
0.09
MTDP-002-3BD18
2
1744
2.96 / 1.48
5.4 / 27
47.24 / 23.62
6.06
21.15
23.45
86.5
0.79
0.10
MTDP-003-3BD18
3
1759
3.38 / 1.69
7.6 / 3.8
69.90 / 34.95
8.80
32.12
37.58
89.5
0.82
0.36
MTDP-005-3BD18
5
1749
4.46 / 2.23
12.4 / 6.2
105.76 / 52.88
14.90
50.21
57.07
89.5
0.83
0.48
MTDP-7P5-3BD18
7.5
1763
9.52 / 4.76
18.8 / 9.4
141.26 / 70.63
21.98
101.11
87.04
91.0
0.81
0.95
MTDP-010-3BD18
10
1753
10.24 / 5.12
24.4 / 12.2
160.8 / 80.4
30.14
97.35
100.67
91.7
0.81
1.16
MTDP-015-3BD18
15
1776
10.2 / 5.1
34.2 / 17.1
261.8 / 130.9
43.63
101.22
128.27
93.0
0.87
2.03
MTDP-020-3BD18
20
1765
11.06 / 5.53
45.0 / 22.5
325.2 / 162.6
59.84
175.93
166.36
93.0
0.90
2.44
MTDP-025-3BD18
25
1775
24.6 / 12.3
30.0 / 15.0
380 / 190
72.30
175.69
184.37
93.6
0.83
3.25
MTDP-030-3BD18
30
1780
31.4 / 15.7
71.8 / 35.9
499.6 / 249.8
86.67
240.94
276.48
94.1
0.82
3.69
MTDP-040-3BD18
40
1778
36.8 / 18.4
95.8 / 47.9
630 / 315
118.10
419.26
457.05
94.1
0.84
7.35
MTDP-050-3BD18
50
1776
46.0 / 23.0
117.6 / 58.8
818 / 409
145.20
512.56
441.41
94.5
0.84
8.99
MTDP-003-3BD36
3
3439
2.82 / 1.41
7.2 / 3.6
68.62 / 34.31
4.51
17.27
18.67
85.5
0.87
0.07
MTDP-005-3BD36
5
3509
3.64 / 1.82
11.8 / 5.9
94.02 / 47.01
7.43
25.26
26.15
86.5
0.89
0.15
MTDP-7P5-3BD36
7.5
3502
4.6 / 2.3
17.2 / 8.6
135.06 / 67.53
11.06
33.73
38.38
88.5
0.90
0.20
Performance Data - MTDP Rolled Steel Three-Phase Drip-Proof Motors
(190/380V / 50Hz data)
F.L.
Current @ 115V/230V
HP
Torque (lb·ft)
Rotor
RPM
(Amps)
Part Number
Inertia
(lb·ft2)
@
190/380V
Full
Locked
Break
Full Load
Locked Rotor
50Hz
No Load
Load
Rotor
down
1500 RPM
MTDP-001-3BD18
1
1449
1.32 / 0.66
3.2 / 1.6
20.4 / 10.2
3.65
8.21
10.11
84.30
0.82
0.09
MTDP-1P5-3BD18
1.5
1450
2.44 / 1.22
4.8 / 2.4
32.6 / 16.3
5.35
15.68
16.64
85.70
0.78
0.09
MTDP-002-3BD18
2
1448
2.96 / 1.48
6.4 / 3.2
44.6 / 22.3
7.31
21.27
23.54
85.70
0.81
0.10
MTDP-003-3BD18
3
1460
3.38 / 1.69
8.6 / 4.3
66.2 / 33.1
10.6
32.25
37.74
88.70
0.84
0.36
MTDP-005-3BD18
5
1452
4.46 / 2.23
14.4 / 7.2
100.0 / 50.0
18.0
50.58
57.60
88.70
0.85
0.48
MTDP-7P5-3BD18
7.5
1464
8.52 / 4.76
21.6 / 10.8
133.8 / 66.9
26.5
101.50
87.45
90.50
0.83
0.95
MTDP-010-3BD18
10
1455
10.24 / 5.12
29.4 / 14.7
152.2 / 76.1
36.4
97.92
101.19
91.20
0.87
1.16
MTDP-015-3BD18
15
1475
10.2 / 5.1
39.4 / 19.7
247.5 / 123.9
52.6
101.52
128.87
92.60
0.88
2.03
MTDP-020-3BD18
20
1465
11.6 / 5.53
51.8 / 25.9
307.6 / 153.8
72.2
176.89
167.50
92.50
0.91
2.44
MTDP-025-3BD18
25
1455
24.6 / 12.3
72.0 / 36.0
359.6 / 179.8
88.3
178.37
187.20
93.20
0.84
3.25
MTDP-030-3BD18
30
1457
31.4 / 15.7
86.2 / 43.1
472.6 / 236.3
104.5
242.44
277.97
93.80
0.85
3.69
MTDP-040-3BD18
40
1460
36.8 / 18.4
115.0 / 57.5
596 / 298
142.5
421.80
458.85
93.80
0.86
7.35
MTDP-050-3BD18
50
1460
46.0 / 23.0
142.4 / 71.2
773.8 / 386.9
175.2
515.09
443.26
94.30
0.85
8.99
MTDP-003-3BD36
3
2860
2.82/1.41
8.6/4.3
67.0/33.5
5.45
17.44
18.80
84.30
0.88
0.07
MTDP-005-3BD36
5
2919
3.64/1.82
13.6/6.8
91.8/45.9
8.99
25.44
26.34
85.60
0.89
0.15
MTDP-7P5-3BD36
7.5
2913
4.6/2.3
20.0/10.0
131.8/65.9
13.37
33.96
38.64
87.60
0.91
0.20
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-9
Chapter 1: Getting Started
MTR2 and MTRP Rolled-Steel 56C/56HC-Frame Three-Phase Motors - Features and
Specifications
IronHorse® rolled steel 56C/56HC-frame* three-phase motors
available ratings are from 1/3 hp to 3 hp. All models have a
TEFC frame, cast aluminum end bell and removable mounting
bases.
Specifications - Rolled-Steel 56C/56HC-Frame 3-Phase Motor - 1800 & 3600 rpm
Motor Specifications - MTR/MTR2 & MTRP 3-Phase 56C/56HC-Frame Motors -
1800 & 3600 rpm
F.L. Amps
Approx
Part
Base
HP
Voltage
NEMA Frame
Housing
@
Weight
Number
RPM
230V/460V
(lb)
1800 RPM
MTR2-P33-3BD18
1/3
TEFC rolled
1.4 / 0.7
18
steel frame
MTR2-P50-3BD18
1/2
230/460
1.9 / 0.95
19
MTR2-P75-3BD18
3/4
2.6 / 1.3
22
56C
Cast
MTRP-001-3BD18
1
1800
1.15
B
flange mount
aluminum
3.2 / 1.6
35
(MTRP = 56HC)
end bell
MTRP-1P5-3BD18
1-1/2
208-
4.5 / 2.3
43
230/460
F1 conduit
MTRP-002-3BD18
2
6.0 / 3.0
49
box location
3600 RPM
MTR2-P33-3BD36
1/3
TEFC rolled
1.3 / 0.65
18
steel frame
MTR2-P50-3BD36
1/2
230/460
1.7 / 0.85
19
MTR2-P75-3BD36
3/4
2.4 / 1.2
21
56C
Cast
MTRP-001-3BD36
1
3600
1.15
B
flange mount
aluminum
3.0 / 1.50
23
(MTRP = 56HC)
end bell
MTRP-1P5-3BD36
1-1/2
208-
4.0 / 2.0
31
MTRP-002-3BD36
2
230/460
5.2 / 2.6
33
F1 conduit
MTRP-003-3BD36
3
box location
7.4 / 3.7
39
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.
NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions.
Page 1-10
Chapter 1: Getting Started
MTR2 and MTRP Rolled-Steel 56C/56HC-Frame Three-Phase Motors Features and Specifications
(continued)
Performance Data - Rolled-Steel 56C/56HC-Frame 3-Phase Motor - 1800 rpm
Performance Data - MTR/MTR2 Three-Phase 56C/56HC-Frame Motors - 1800 rpm
(460V data except as indicated)
Minimum
Maximum
Current @ 230V/460V
F.L.
Speed (rpm)
Speed (rpm)
(Amps)
Part Number
HP
RPM
Full
Locked
CT
VT
CHP*
Safe
No Load
Load
Rotor
MTR2-P33-3BD18
1/3
1.10 / 0.55
1.4 / 0.7
7 / 3.5
MTR2-P50-3BD18
1/2
1725
431
172
5400
1.36 / 0.68
1.9 / 0.95
10 / 5
MTR2-P75-3BD18
3/4
1.60 / 0.80
2.6 / 1.3
12.2 / 6.6
2700
MTRP-001-3BD18
1
1760
440
176
2700
2.2 / 1.1
3.2 / 1.6
31 / 16
MTRP-1P5-3BD18
1-1/2
1760
440
176
2700
2.8 / 1.4
4.5 / 2.3
47 / 24
MTRP-002-3BD18
2
1760
440
176
2700
3.6 / 1.8
6.0 / 3.0
61 / 31
Torque (lb·ft)
F.L.
F.L.
Rotor
Part Number
HP
Full
Locked
Break
Efficiency
Power
Inertia
Load
Rotor
-down
(%)
Factor
(lb·ft2)
MTR2-P33-3BD18
1/3
1.03
2.93
3.77
67.0
0.65
0.0329
MTR2-P50-3BD18
1/2
1.53
3.81
4.96
70.0
0.69
0.038
MTR2-P75-3BD18
3/4
2.31
5.41
7.17
73.0
0.73
0.048
N/A
N/A
MTRP-001-3BD18
1
3
12.35
14.51
85.0
0.69
0.107
MTRP-1P5-3BD18
1-1/2
4.4
21.68
21.76
86.5
0.72
0.135
MTRP-002-3BD18
2
6.03
27.3
27.46
86.5
0.74
0.158
* Maximum Constant HP rpm is for direct-coupled loads.
Performance Data - Rolled-Steel 56C/56HC-Frame 3-Phase Motor - 3600 rpm
Performance Data - Three-Phase 56C/56HC-Frame Motors - 3600 rpm
(460V data except as indicated)
Minimum Speed
Maximum
Current @ 230V/460V
F.L.
Part Number
HP
(rpm)
Speed (rpm)
(Amps)
RPM
CT
VT
CHP*
Safe
No Load
Full Load
Locked Rotor
MTR2-P33-3BD36
1/3
0.8 / 0.4
1.3 / 0.65
7.6 / 3.8
MTR2-P50-3BD36
1/2
3450
862
345
1.0 / 0.5
1.7 / 0.85
10.8 / 5.4
MTR2-P75-3BD36
3/4
1.3 / 0.7
2.4 / 1.2
16 / 8
MTRP-001-3BD36
1
3500
875
350
5400
5400
1.52 / 0.76
3.00 / 1.50
22 / 11
MTRP-1P5-3BD36
1-1/2
3500
875
350
1.8 / 0.9
3.96 / 1.98
38 / 19
MTRP-002-3BD36
2
3500
875
350
2.28 / 1.14
5.22 / 2.61
53/27
MTRP-003-3BD36
3
3500
875
350
3.54 / 1.77
7.38 / 3.69
89 / 45
Torque (lb·ft)
F.L.
F.L. Power
Rotor Inertia
Part Number
HP
Full
Locked
Break
Efficiency
Factor
(lb·ft2)
Load
Rotor
-down
(%)
MTR2-P33-3BD36
1/3
0.50
1.14
1.99
60.0
0.75
0.0245
MTR2-P50-3BD36
1/2
0.74
1.81
2.96
67.5
0.74
0.0277
MTR2-P75-3BD36
3/4
1.14
2.95
4.25
71.5
0.78
0.031
MTRP-001-3BD36
1
N/A
1.51
3.98
4.93
N/A
77
0.83
0.034
MTRP-1P5-3BD36
1-1/2
2.21
7.94
9.03
84.0
0.85
0.048
MTRP-002-3BD36
2
3.02
12.23
12.8
85.5
0.86
0.056
MTRP-003-3BD36
3
4.49
19.44
20.39
86.5
0.85
0.069
* Maximum Constant HP rpm is for direct-coupled loads.
IronHorse® General Purpose
AC Motors User Manual - 11th Ed. - 06/29/2022
Page 1-11
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