SU76642A1 - Circuit breaker - Google Patents

Description

The proposed circuit breaker is designed to protect low voltage electrical networks from short circuits and overloads. It can also be used in urban networks as a current limiter for household loads.

To prevent the breaker contacts from closing, when the latch release position is turned off, both contacts are made under. so that contact closure can occur only when one of them engages with a latch.

The invention is illustrated by kinematic schemes: FIG. 1 - the automat is shown in the on position; in fig. 2 is in the off position; in fig. 3 shows an intermediate incorporation stage; in fig. 4-example constructive execution of automatic power off. chatel

The contacts / and 2 switches are made movable (or rotated) under the influence of two spiral springs 8 in the directions indicated by the arrows. The contact movement / is limited, firstly, by the latch 4, and secondly, by the cam 7 of the button 6 which is mechanically connected to

contact 2. The cam 7 is made of an electrically insulating material.

When the contact / is turned on, it is held by the latch 4 and its spring 8 is cocked. When overloaded electromagnet; retracts the latch 4, the contact / is released and opens the electrical circuit.

In the off position, the contact / rests on the cam 7.

The switch on of the machine is made by pressing the button 6 until the end of its stroke, and the pressing force is transmitted through the cam 7 to the contact /. Thus, when the button 6 is pressed, the contacts / and 2 simultaneously move, and the first one, when reaching its extreme position, is locked by the latch 4. When button 6 is released after THIS, contact 2 returns to its original position and, touching the contact /, closes the circuit current.

Button 5 is for manual by. switching on the machine by operating the latch 4.

The subject of the invention is a circuit breaker with moving contacts, one of which is held by a latch.

released by the action of a button or a switch relay mechanism, characterized in that, in order to avoid the possibility of closing the contacts of the switch when releasing its latch, both contacts are made podvn / knnysh in the same direction without touching the contacts when acting on the button of the switch, and on the path of one of them is held, and the latch so that when the power button returns to its original position, the contacts can be closed only when one of the contacts is engaged by the latch and does not Odilo upon release of a latch.

Bsgz

N.S .;

Have

, four

“. , ".," .. ". ,;. ,, “:

™ .., ...., S ™ .1 ..

 TJ HJ