Marathon Electric U028A Product Information Packet

PRODUCT INFORMATION PACKET

Model No: 256TTGN16540

Catalog No: U028A

20 HP Explosion Proof Motor, 3 phase, 1800 RPM, 575 V, 256T Frame, EPFC

Explosion Proof NEMA Motors

Regal and Marathon are trademarks of Regal Beloit Corporation or one of its affiliated companies.

©2020 Regal Beloit Corporation, All Rights Reserved. MC017097E

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Product Information Packet: Model No: 256TTGN16540, Catalog No:U028A 20 HP Explosion Proof Motor, 3 phase, 1800 RPM, 575 V, 256T Frame,
EPFC

Nameplate Specifications

Output HP 20 Hp Output KW 14.9 kW
Frequency 60 Hz Voltage 575 V
Current 19.5 A Speed 1775 rpm
Service Factor 1.15 Phase 3
Efficiency 93 % Power Factor 84
Duty Continuous Insulation Class F
Design Code B KVA Code G
Frame 256T Enclosure Explosion Proof Fan cooled
Thermal Protection Thermostats (N/C) Ambient Temperature 40 °C
Drive End Bearing Size 6309 Opp Drive End Bearing Size 6210
UL UL Listed And CSA Certified CSA Y
CE N IP Code 54

Hazardous Location

EXP PROOF CL I GR C&D CL II GR
F&G T3B

Technical Specifications

Electrical Type Squirrel Cage Inverter Rated Starting Method Line Or Inverter
Poles 4 Rotation Reversible
Resistance Main .474 Ohms Mounting Rigid base
Motor Orientation Horizontal Drive End Bearing Ball
Opp Drive End Bearing Ball Frame Material Cast Iron
Shaft Type T Overall Length 25.27 in
Frame Length 12.25 in Shaft Diameter 1.625 in
Shaft Extension 4.18 in Assembly/Box Mounting F1 ONLY
Outline Drawing B-SS203001-1225 Connection Drawing A-EE7300T

This is an uncontrolled document once printed or downloaded and is subject to change without notice. Date Created:10/06/2020

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