4239-90021

Motor starter

Properties of 4239-90021

Overall Length:
24.000 inches
Overall Height:
8.000 inches
Overall Width:
24.000 inches
Ac Voltage Rating:
440.0 volts
Fuse Accommodation Quantity:
3 and 2
Features Provided:
Circuit protection fuse
Criticality Code Justification:
Zzzy
Phase:
Three
Reference Number Differentiating Characteristics:
Magnetic permeability shall not exceed 2.0 after fabrication
NSN:
6110-01-363-4021
Description:
Starter,motor
Cage Code:

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