Electromagnetic operated circuit breaker control and signaling circuit

Circuit breakers of lOkV and below in factories and enterprises generally use
CD10 (originally CD2) electromagnetic operating mechanism. This type of
mechanism itself has a mechanical "anti-jump" device. The circuit breaker control and signal circuit using
CD10 operating mechanism is shown in Figure 6-70. In the figure, wc is the control busbar; WL is the light indicator busbar; WF is the flash signal busbar ; WAS is the accident sound busbar; w0 is the closing busbar; SA is the control switch; KM is the circuit breaker QF closing contact device; YR is the trip coil; YA is the electromagnetic closing coil; KA is the outlet relay contact; Hi is the green indicator light; H2 is the red indicator light; R3 is the discharge resistor.