FIELD: electrical engineering.
SUBSTANCE: invention can be used in electric engineering and electric power engineering for protection of electric installation against short circuits. Device for overcurrent protection of electrical installation includes current sensor and reacting element, wherein current sensor is placed in electric insulating housing measuring converter in form of flat inductance coil and connected to it cable amplifier, and the reacting element is a diode bridge, to one diagonal of which a cable amplifier is connected through an electric capacitor, and to another diagonal of the relay with a controlled threshold of operation.
EFFECT: technical result is higher reliability and wider field of use of device.
1 cl, 3 dwg
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