Q5 series two-power automatic change-over  switch (A. T. S) suits for the transfer between two powers (primary power and secondary power), whose rated voltage is beneath 600V(AC), control voltage is under AC 220V. It is the new product to replace the conventional one which made up of AC contactor and circuit breaker.

Features and characteristics:
1. Excitation type electromagnteism driving, direct current pulse operation, transfer fast, no heat to the coil, and no noise, can save the energy.
2. Two operation modes: power-operated and hand-operated.
3. Having electric interlocker and mechanical interlocker, this can ensure two powers not electrified at the same time.
4. Big contact can be reliable.
5. Good arc extinguishing feature can make the switch be operated even it is in use.