Marathon Electric U500A Product Information Packet

PRODUCT INFORMATION PACKET

Model No: 256TTDBD4024

Catalog No: U500A

25 HP Fire Pump Motor, 3 phase, 3600 RPM, 230/460 V, 256T Frame, ODP

Fire Pump Motors

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

©2021 Regal Beloit Corporation, All Rights Reserved. MC017097E

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Product Information Packet: Model No: 256TTDBD4024, Catalog No:U500A 25 HP Fire Pump Motor, 3 phase, 3600 RPM, 230/460 V, 256T Frame,
ODP

Nameplate Specifications

Output HP 25 Hp Output KW 18.7 kW
Frequency 60 Hz Voltage 230/460 V
Current 58.0/29.0 A Speed 3545 rpm
Service Factor 1.15 Phase 3
Efficiency 91 % Power Factor 88
Duty Continuous Insulation Class F
Design Code B KVA Code F
Frame 256T Enclosure Drip Proof
Thermal Protection No Ambient Temperature 50 °C
Drive End Bearing Size 6209 Opp Drive End Bearing Size 6208
UL Listed CSA Y
CE Y IP Code 23

Technical Specifications

Electrical Type Squirrel Cage Induction Run Starting Method

Poles 2 Rotation Reversible
Resistance Main .635 Ohms Mounting Rigid Base
Motor Orientation Horizontal Drive End Bearing Ball
Opp Drive End Bearing Ball Frame Material Rolled Steel
Shaft Type T Overall Length 24.22 in
Frame Length 12.20 in Shaft Diameter 1.625 in
Shaft Extension 4.00 in Assembly/Box Mounting F1/F2 CAPABLE
Outline Drawing SS620685-256T Connection Drawing EE7308AA

Part Wdg Start Low Volt Only & Wye
Start Delta Run

This is an uncontrolled document once printed or downloaded and is subject to change without notice. Date Created:06/01/2021

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