The contactor has double break contacts direct-acting structure and three pairs NC main contacts.The auxiliary contacts could be two NC and two NO contacts.The linking between contact support units and gag bit with stretch lock eliminates the weakness.
The host,the auxiliary contact material are made by the electricity performance superior silver alloy,The explosion chamber assumes the exclosed trpe,and has the anti-burning material to prevent the electric arc to splatter to outside.le<=22A separates the arc board without the extinguishing of arc,le>=32A is loaded with the metal to sepaate the arc board.