The relays have relay contacts for telemetering measurement and auxiliary contacts, which vent coils after they have been switched. Due to magnetic blocking relay can work with deactivated coils for a long time.
There are three designs of the relays:
РФ4.520.000-00 - сontacting sizes of the high-voltage circuit correspond to the socket from draft 5 ОЮ0.364.032 ТУ.To connect relay the following plugs СР-50-281, СР-50-282 and similar to them can be used;
РФ4.520.000-01 - for air and printed circuit wiring;
РФ4.520.000-02 - сontacting sizes of the high-voltage circuit correspond to the plug from draft 4 ВР0.364.015. To connect relay the following sockets СР-50-275, СР-50-276, СР-50-287 and similar to them can be used.
Operational data :