| 摘要 |
FIELD: electricity. ^ SUBSTANCE: electric switch is offered, mainly three-phase switch, designed for connecting and disconnecting the circuit between load (for example three-phase alternating current motor) and electrical power source. The switch contains mechanism for connecting and disconnecting intended for circuit closing and opening, provided with at least one set of movable and immovable contacts; solenoid-actuated mechanism to control contact operation; casing for accommodation of movable and immovable contacts; arc extinction mechanism; housing connected with base and intended to accommodate solenoid-actuated mechanism; base plate integrated with housing; and retaining mechanism located on base plate and intended to retain contacts in closed circuit state. Retaining mechanism is electromagnetic and has a set of electromagnetic attraction mechanism, at that movable steel magnetic core is performed as mechanism with hook or deflector, at that movable steel magnetic core is attracted in such way that hook or deflector holds the switch in closed state by movable pin capturing and jamming when electromagnetic attraction mechanism gets power supply. ^ EFFECT: design simplification and lowering of power consumption. ^ 7 cl, 60 dwg |
