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(1) Select the rated pressure drop specification of the shunt according to the number of mV marked on the dial of the current meter (or current-voltage multimeter) (usually 75mV or 45mV is commonly used). If the current meter used does not have this value, use the following formula to calculate the voltage limit of the meter, and then select the rated pressure drop specification of the shunt.

The DC contactor is also composed of an electromagnetic mechanism, a contact system, and an arc extinguishing device.

When the coil of DC contactorl is energized, the coil current generates a magnetic field, so that the static iron core generates electromagnetic attraction to attract the moving iron core

DongYa Electronic will take part in Russia ELEKTRO 2019. Exhibition Name: 28th International Exhibition For Electrical Equipment,Lightning Engineering, Building Automation Exhibition Date: April 15-18, 2019 Booth No.: Pavilion Forum, FC074 Exhibition Add: Expo Center, Moscow, Russia

Exhibition Name: 28th International Trade Fair for Electronic Components, Systems and Applications;Exhibition Date: November 13–16, 2018

DongYa Electronic new developed product High Voltage DC Contactor has  obtained all the safty approvals(UL、CCC). Our High Voltage DC Contactor is on sale now, welcome to call to co-operate.