VD4-12 Spring-operated circuit breaker control, signal circuit（Module operating mechanism）

VD4-12 Spring-operated circuit breaker control, signal circuit（Module operating mechanism）

SFA:change-over switch

SFB:change-over button

BB:Thermal relay

BT:Temperature measurement

MS:Energy storage motor

QF:Dc air circuit breaker

QC:Ground switch

WCC:Wire Connection Center

V:Rectifier bridge

The inside of the frame is divided into the inside of the circuit breaker car