Select the type of DC contactor The type of DC contactor should be selected according to the type of load current and the weight of the load, that is, AC load or DC load, light load, general load or heavy load.

The rated working voltage of the relay is the most important technical parameter of the relay. When using a relay, the working voltage of the circuit (that is, the circuit where the relay coil is located) should be considered first,

The type of DC relay should be selected according to the type of load current and the weight of the load, that is, AC load or DC load, light load, general load or heavy load.

As long as a certain voltage is applied to both ends of the coil, a certain current will flow in the coil, resulting in an electromagnetic effect,