Keterangan :

Automatic Change Over Contactors ( automatic transfer switches ) for emergency power and normal power changeover
Features :
-sufficient contact open time to avooid possible arcing during changeover
-contact pressure is kept constant by leaf spring and therefore no change in contact conductivity due to voltage fluctuations
-no operating current required after the changeover because of the mechanical latch mechanism
-contact ara made from silver alloy for high resistance to burn-off
- self sliding contact clean dust and oxidation on contact' s each time when the contactor is operated