Moulded case circuit breaker with residual current protection
A plastic shell type, residual current technology, applied in the direction of circuits, protection switches, emergency protection devices, etc., can solve the problems of high short-circuit breaking capacity of CBR, increase in length of split CBR, etc., to achieve space saving, reasonable structure, volume compact effect
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[0021] Example
[0022] Such as figure 1 , figure 2 , image 3 As shown, a plastic case circuit breaker with residual current protection, the device includes a base 5, a contact arc extinguishing module group 4, an operating mechanism 2, a residual current release 3, a cover assembly 1, a partition 6, a thermal The magnetic trip unit 7, the insulator 8, the zero sequence current transformer 9, the leakage control assembly 10, the contact arc extinguishing module group 4 is fixed on the base 5, and the operating mechanism is fixed on the base 5. And the contact arc extinguishing module group 4, the residual current release 3 is installed on the contact arc extinguishing module group 4, and is connected to the leakage control assembly 10 through a wire, and the partition is installed on the base 5 and Between the contact arc extinguishing module groups 4, each phase of the thermal magnetic trip unit 7 is set on the contact arc extinguishing module group 4 and the base 5 through a...
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