EATON 449D431H22 Energy Storage Motor

I. Basic Information
Brand: EATON (formerly Cutler-Hammer)
Full model name: 449D431H22
Equipment type: Medium-voltage vacuum circuit breaker spring-stored motor (operating mechanism motor)
Applicable circuit breaker: 150VCP-W50 series vacuum switch cabinet / circuit breaker
Derived models of the same series:
449D431H21: 220VAC
449D431H22: 248VAC / 125VDC (this model)
449D431H23: 110VAC
449D431H27: Special DC voltage version

Electrical Core Parameters
Rated working voltage: 248V AC / 125V DC (AC/DC dual-purpose storage motor)
Purpose: Drive the circuit breaker’s storage spring to complete automatic storage before closing
Structure: Integrated reduction gear + miniature DC series-excited motor, with built-in travel limit switch
Weight: Approximately 7kg
Protection: IP20, installed inside the switch cabinet
Operating environment: -20℃ ~ +70℃, applicable to power stations, power plants, industrial distribution rooms

Function Principle
After the circuit breaker is tripped, the control circuit supplies power to the motor, and the gearbox pulls the storage spring to compress the storage;
When the spring is fully stored, the built-in limit switch cuts off the motor power supply, stopping the operation;
When receiving the closing command, the spring releases the power to drive the contacts to close;
After each closing operation, it automatically re-stores, and the cycle continues.

Typical Application Scenarios
Power plants, self-owned power stations 150VCP medium-voltage vacuum switch cabinets
Chemical, metallurgical, mining high-voltage distribution rooms
High-voltage distribution systems for ships, rail transit
Data centers, large factories high-voltage incoming cabinets