FIELD: electric power supply of railroads. SUBSTANCE: device has circuit breaker 2 with electric rive, which is inserted into contact hangs, control unit for circuit breaker drive, current detector 3, threshold gate 4, high-frequency oscillator 5 with emitting antenna and power supply 6. In addition device has high-frequency receiver 7 with receiving antenna and locking relay 8, which are mounted in housing of electric drive. One terminal of current detector is connected through threshold gate to measuring input of high- frequency oscillator. Output of high-frequency receiver is connected to locking relay, which terminals are inserted in supply circuit of control unit for circuit breaker drive. Another terminal of current detector is connected to input of power supply 6, which output is connected to supplying input of high-frequency oscillator 5. EFFECT: increased functional capabilities. 1 dwg
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