Actuators the electromagnetic PMA-1 series – the switching devices of open execution with natural cooling. Stops and reversals of three-phase asynchronous engines with a short-circuited rotor with power up to 300 kW are intended for remote start-up by direct connection to a network, at an alternating voltage to 380 and 660 V with a frequency of 50, 60 Hz. In the presence of triple-pole thermal relays or devices of pozistorny protection actuators carry out protection of the operated electric motors against overloads of inadmissible duration and against the currents arising at break of one of phases. Are used on household and industrial facilities, substations and in distributing devices.
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Actuators magnetic Electro PMA-1