21507-1

Motor starter

Properties of 21507-1

Speed Adjustments:
Single speed
Overall Length:
15.625 inches
Overall Height:
9.250 inches
Overall Width:
11.188 inches
Ac Voltage Rating:
440.0 volts
Frequency Rating:
60.0 hertz
Actuation Method:
Magnetic
Performance Type:
Semiautomatic
Fuse Accommodation Quantity:
1
Duty Cycle:
Continuous
Mounting Configuration:
Four 3/4 in. Diameter mtg holes on 6-3/4 in. By 11-3/4 in. Mtg centers
Operating Voltage Characteristic:
Full
Horsepower Rating:
3.000
Actuator Voltage:
440.0 ac
Load Protection Type:
Overload and undervoltage
Ambient Temp:
50.0 degrees celsius
Inclosure Feature:
Dripproof
Control Type:
Remote
Features Provided:
Circuit protection fuse
Phase:
Three
Frequency In Hertz:
60.0
Nondefinitive Specification/std Data:
1 size
NSN:
6110-00-500-2476
Description:
Starter,motor
Cage Code:
63743

Definition Motor Starter

A device primarily designed to control the supply circuit(s) of a motor in order to accelerate the motor from rest to normal speed. Includes manual starters with overload protection and manual, automatic or semiautomatic starters consisting of combinations of items such as relays, resistors, switches, circuit breakers, etc. Excludes relay-switch; circuit breaker; switch (as modified) and relay (as modified). For devices, which in addition to starting and stopping, reverse, select and/or regulate the speed of a motor, see controller (as modified).

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Last modified 11/17/2024