FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering, namely to relay protection equipment. Current protection device is additionally equipped with a first reed switch with a control winding and a closing contact, second reed switch with closing contact, made with possibility of magnetic flux reception, signal amplifier, signal lamp, AC control current source with first and second outputs and circuit breaker tripping coil.
EFFECT: simplified design of current protection device with provision of its self-diagnostics.
1 cl, 1 dwg
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