SU74072A1 - Circuit breaker - Google Patents

Description

The Mredmetsm of the present invention is a circuit breaker for low voltage circuits of a constant and an alternating current, ensuring disconnection of both short-circuits and interruptions of the switch. contacts.

This construction provides protection against the release of a telg that, according to the invention, one of the electromagnets is mounted on a bimetallic curved wire curved wire.

FIG. the circuit diagram of the proposed switch; in fig. 2 shows the effect of the device.

On the cores / pins at the ends, there are current windings 3, included in, as shown in FIG. 2, and creating magnetic fluxes F, striving to repel electromagnets .. you are 1 and 3 apart. One of the electromagnetics is mounted on a bimetallic plastic 4, the other is on a laminated lever 5. Number 6 denotes a casing, 7 — arc-shaped springs, 8 — button, 9-rod, / -caps, // —conducting wires, / - base .

fjpj) nsrmal) oh ne. The current of the contacts 2 is closed due to the action of the spring 7.

When KOpjJTKOM closes, the opposite magnetic fluxes F increase so strongly that the contacts 2 rapidly diverge. The arc is quenched by a magnetic blast created by the windings 3. Pruj1 1 7 jumps to the off position and turns off the chat, the spruce remains off.

The activation is carried out manually by pressing the button 8. At the same time, the contact is first lowered, then the upper contact is sent to the on position.

KcjrraKTbi 2 closes after the manual action on button 8 is removed, i.e. when the bottom contact is released.

Button 8 also serves for manual switching. ; {; this kicks in one contact. When bimetal is overloaded, plate 4, through which the load current flows, is bent (shown by nupktir) and opens contacts 5. After cooling, the opa automatically returns to its original position, again closing contacts. Therefore, in the event of an overload, the circuit breaker continuously switches on and off the circuit until the overload condition is resolved.

213

Subject invention

Circuit breaker with the use of two in contact with each other and forming the contacts of the electromagnets with the windings wound so that

when an over current passes through them, the electromagnets repelled from each other, characterized in that, in order to realize protection from overload, one of the electromagnets is mounted on a current-conducting bimetallic plate.

34

FIG. 2