Motor Mechanism

Merlin Gerlin 0685763C

The part number 0685763C (often listed as 685763) corresponds to the Merlin Gerin MCH-M Spring Charging Motor Mechanism. This industrial electrical operator is designed specifically to automate the charging of stored-energy springs within heavy-duty circuit breakers.

Core Technical Specifications
Parameter Specification Details
Manufacturer Merlin Gerin (Legacy brand of Schneider Electric)
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Model Type / Component MCH-M Gear Motor / Electric Operator (Spring Charging Motor)
Catalog / Part Number 685763 (Variant suffix C denotes technical revision level)
Rated Control Voltage (U s) 200/240 V AC (at 50/60 Hz) or 200/240 V DC
Power Consumption 180 VA
Built-in Limit Switch Rating 10 A at 240 V AC (Integrated limit switch/spring charged switch)
Technical Level No. 01
Net Weight Approx. 1.78 kg to 1.97 kg (3.92 lbs to 4.34 lbs)

System Compatibility
This motor mechanism is specifically designed as a plug-in breaker accessory for legacy, high-amperage Schneider Electric / Merlin Gerin Air Circuit Breakers (ACB) and Insulated Case Circuit Breakers (ICCB):
Masterpact M series frames (M08 through M63)
Masterpact MP series frames
Masterpact MC series frames

Functional Description
The MCH-M mechanism acts as a motorized remote control interface. When electrical power is applied to the circuit, the motor runs automatically to compress the high-tension closing springs inside the Masterpact breaker. Once fully compressed, the integrated 10A Spring Charged Switch trips mechanically. This cuts power to the motor and readies the breaker mechanism for an instantaneous remote close or automated system reclosure command.