Manual motor controllers are electrical devices used for motor starting and often include motor disconnect, overload protection, short-circuit protection and remote operation in one assembled unit.
The standard manual motor controller (MMC) consists of a manual motor protection with either a toggle or rotary operator, a wiring connector, and an IEC contactor. These types of motor controllers require an upstream short-circuit protection device like a fuse or breaker to protect the motor circuit.
Combination motor controllers include motor protection functions, and do not require additional fuses or breakers.
Manual motor controllers are ideal components for group motor installations, to protect motors from faults that fuses and circuit breakers would ignore, and for applications with limited cabinet space.