FIELD: overcurrent protective gear; overcurrent releases for automatic circuit breakers. SUBSTANCE: device has rectifier, measuring unit, final element, and power unit whose input is connected to circuit being protected. Power unit has, apart from rectifier, two transistors, two resistors, and voltage regulator diode. Circuit arrangement provides for operation at different voltages across circuit under protection even in case of 10 times difference. EFFECT: improved reliability; facilitated manufacture and in- service maintenance. 1 dwg
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