Excess current switching device

Details Excess current switching device Excess current switching device

H - Electricity

01

H

348/14, 306/60

H01H 75/12 (2006.01) H01H 9/42 (2006.01) H01H 71/10 (2006.01)

Patent

CA 1036703

ABSTRACT OF THE DISCLOSURE An excess current switching device having particular but not exclusive application in switching direct current power. The switching device comprises first and second excess current switches. The first switch comprises a break point and a thermal and/or electromagnetic tripping device(s) linked to a latching mechanism and the second switch comprises a break point and an electromagnetic tripping device having a high resistance coil linked to a latching mechanism. The break point of the first switch is connected in parallel with the tripping device of the second switch. When an excess current occurs, the break point of the first switch opens, leaving the tripping device of the second switch in circuit and this opens the break point of the second switch.

214411

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