The contactor can not only turn on and off the circuit, but also has a low voltage release protection. Contactor control capacity, suitable for frequent operation and remote control, automatic control system is one of the important components.

Thermal overload relay is a flexible current range from 0.1A to 93A, can be mounted directly under the contactors for compactness or separately using accessories.

Magnetic starter is suitable for using in the circuits the rated voltage up to 690V AC 50Hz or 60Hz. With AC-3 type, used for starting or halting of three-phase squirrel case electromotor which rated working voltage is 380V. Combining with matchable thermal relay can protect the motor from overload and phase failure.

A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. It serves the same function as an electromechanical relay, but has no moving parts and therefore results in a longer operational lifetime. SSRs consist of a sensor which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. The relay may be designed to switch either AC or DC loads.

A time switch is a timer that operates an electric switch controlled by the timing mechanism.