FIELD: electric power supply engineering.
SUBSTANCE: proposed power turn-on and turn-of device has secondary power supply, code keying unit, control unit, actuating device with make contact, push-button with make contact, indicator, first and second input power buses, first and second output power buses. Novelty is introduction of code keying unit and new interconnections for functional components.
EFFECT: provision for device protection against unauthorized disconnection, enlarged functional capabilities.
1 cl, 6 dwg
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