Details

Description

Marathon® AC Motor, 4-Pole Continuous-Duty Low Voltage, Fire Pump Motors Application, Squirrel Cage Induction Run Motors Special Features, 250 hp, 460 V AC, 278 A, 60 Hz Frequency, 3 ph, 1788 rpm Speed, 1 Speed, DP, IP23 Enclosure, 445TS Frame, 2-3/8 in Dia x 4-3/4 in L Extension Shaft, Reversible Rotation, 1.15 Service Factor, Deep Groove Ball Bearing, 736 ft-lb Full Load Torque, Rigid Base Mounting, 50 deg C, Insulation Class: Class F, Cast Iron, 45.95 in L x 26.9 in H Dimensions

Features:

Designed for use on pumps for fire pump duty
Red paint on 25 hp through 200 hp
Single voltage motors have 12 leads and are suitable for wye-delta, across the line, or part winding start
Dual voltage motors have 12 leads, suitable for wye-delta or across the line start on either voltage, or part winding start on low voltage
Rated 60/50 Hz, 190/380 or 380 V at next lower horsepower

Standards/Approval:

CE Certified
CSA file LR2025
UL file EX5190
NEMA Design Code: B

Warranty:

12 months

Attributes/Specifications

Amperage Rating	278 A
Application Type	Fire Pump Motors
Bearing Type	Deep Groove Ball
Dimensions	45.95 in L x 26.9 in H
Enclosure Type	DP, IP23
Frame	445TS
Frequency Rating	60 Hz
Horsepower	250 hp
Insulation Class	Class F
Material	Cast Iron
Mounting Type	Rigid Base
Number of Speeds	1
Phase	3
Rotation	Reversible
Service Factor	1.15
Shaft Size	2-3/8 in Dia x 4-3/4 in L Extension
Special Features	Squirrel Cage Induction Run Motors
Manufacturer	Marathon®