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JDJS-1 monitoring relay is mainly used in various automatic control circuits of DC or AC operation. It can monitor the circuit breaker. The alarm is given to the disappearance of the control power supply, the failure of the switching coil and the lead fault, the auxiliary contact fault of the circuit breaker and the fault of the relay itself.

The monitoring relay of JDHF-1000 switching (closing) circuit is mainly used in various protection and automatic control devices as the monitoring relay of the operating state of circuit breaker.

JDRD-1000 fuse monitoring relay is mainly used in various protection and automatic control devices, as the monitoring relay of power supply fuse operation status.

JZZS-1000 switch-off, switch-on, power supply monitoring integrated device is mainly used in DC or AC operation of various automatic control circuits, respectively, the circuit breaker switch-off (switch-on) circuit, control power supply monitoring. (suitable for all circuit breakers).

JDP-1000 Dual Position Relay is mainly suitable for all kinds of protective devices. It has magnetic holding function to realize mechanical locking and position prompt.

JDS-1000 time relay is mainly used in various control and protection circuits, and plays an automatic time-delay switching circuit role.

JDL-1000 current relay is mainly used in short circuit, overcurrent, overload and zero sequence current protection lines of transmission lines, transformers and motors as starting elements.

The JDY-1000 voltage relay is mainly used in the relay protection line as the action element of overvoltage protection or low voltage locking.