DE1588855A1 - Circuit breaker - Google Patents

Description

Stotz-Kontakt GmbH

Mannheifli Mannheim , October 25, 1967

Pat / Hrb / Ht.

Mp no. 660/67

"Circuit breaker ¹¹ .

The invention "relates to a circuit breaker.

In order to achieve an economical production of multi-pole line circuit breakers, these "are known from several single-pole miniature circuit breakers using coupling elements. For this reason are also Fault current circuit breaker known, which also consists of several single-pole circuit breakers and an additional single-pole Use fault current protection switch. When a Overcurrent, short circuit or fault current is then passed through the coupling elements causes the all-pole disconnection of the multi-pole miniature circuit breaker (DBP 1 169 012)

In the case of special network conditions, it may be necessary to switch off the circuit breaker if the mains voltage drops below a certain value. However, since the circuit breaker is not an electrically operated switching device, this deactivation would have to be done by hand. This can be However, this does not materialize because the mains voltage is switched off must take place briefly, which cannot be ensured by the operating personnel.

There is therefore the task of equipping a line circuit breaker with an undervoltage release in a simple manner. According to the invention, the circuit breaker consists of one or more single-pole circuit breakers and an additional one housed in an attachment; If an undervoltage occurs, the disconnection of the

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consumer circuit introducing undervoltage release together

Under-

men. The ^ voltage release expediently forms an independent one Attachment in which the release lever is guided to the outside and unlatching into the switching mechanism of the neighboring line

Underside circuit breaker intervenes. It is advantageous to use the

. to arrange the trip release in a single pole switch. The un- Undervoltage release, which is constantly connected to voltage on the input side, has a two-fold release when an undervoltage occurs on the switching mechanism of the additional single-pole switch, whereby the unlatching of the switching mechanisms of the single-pole Circuit breaker takes place via coupling elements.

The additional single pole switch can with regard to his Switching mechanism and switching contact as well as its arc extinguishing device in the same way as the single-pole circuit breaker be trained. It can also have the same height and depth above its base, if necessary have the same width as the single-pole miniature circuit breakers. .

In "· of the drawing, Pig. 1 shows an embodiment of a additional single-pole switch with an undervoltage release, which is combined with several line circuit breakers to form a single line circuit breaker with undervoltage release, shown in the open state.

In; _: dg i "Fig. 2 shows the undervoltage release forming an attachment.

3 shows how the attachment to a line circuit breaker is attached and engages in this.

The particular single pole switch according to 3? Ig. 1, who also such as the well-known switch for the central point

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conductor, no short-circuit release and thermal overcurrent release contains, has an undervoltage release 1, *

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whose iron core carries 2 coils 3, ⁴ , 1 of which the connection lines 5 lead on the one hand to a plague contact 6 on the supply side of the switch and on the other hand via a wall opening 7 to the invisible fixed contact of the attached adjacent circuit breaker. The armature 9 acting on the latching of the switching mechanism 8 is connected to a tension spring 10 which tries to pull the armature 9 off the magnet core 2.

The single-pole switch with undervoltage release is activated with one or more single-pole circuit breakers under Use of known coupling elements to form a single circuit breaker Undervoltage release assembled.

The end toggle 11 protrudes from the switch housing of this switch, the one working with the Pestkontakt 6 via the switching mechanism S movable contact 12 acts. Sideways "from Hand lever 11, an arc extinguishing device 13 is provided.

The armature 9 of the Unterspanrjungsauslösers 1 is contrary to the Tensile force of the spring 10 tightened when on the supply side of the switch normal voltage is present. With the toggle 11 the switch can then be switched on and off. However, if the voltage drops below one when the switch is on certain .7ert, then the anchor 9 by greater force of the Tension spring IC pulled off the jol of the magnetic core 2. The anchor 9 then unlatches the switching mechanism 8 as well as all switching mechanisms of the following switches via the coupling elements, so -jd that all switching contacts of each switch simultaneously from each other be separated. ■

However, as long as the normal stress does not return, there is a It is not possible to switch on the switch, as all the switching mechanisms are then still in the unlocking position. First

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when the normal voltage returns, the armature 9 of the Un-. voltage release 1 pulled back in * All switchgear are then latched. The circuit breaker is then ready for use again. The undervoltage release that acts like a contactor 1 therefore does not need to be switched on in advance via an additional auxiliary contact.

Is in the attachment 14 as in Figures 2,3 only the If the undervoltage release 1 is accommodated, its release lever engages 15 directly into the switchgear of the neighboring miniature circuit breaker 16 a. If undervoltage occurs, this will be The switchgear is unlocked by means of the release lever 15. A feather switch is prevented until the armature 9 is tightened when the voltage returns and. the release lever 15 with it takes its price sharing.

In all of these versions, an overvoltage release or an overvoltage release can of course be used instead of the undervoltage release. basically a trigger that is controlled by any other variable that deviates from a normal operating variable, be used.

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Claims (8)

Claims 1. Circuit breaker., Characterized in that the S tain system consisting of one or more single-pole line protection switches and an additional one in an attachment ■ housed, "if an undervoltage occurs Shutdown of the consumer circuit initiating undervoltage release (1) exists. 2. Circuit breaker according to claim 1, characterized in that that the undervoltage release is arranged in a single-pole switch and with this an attachment forms. 3. Line protection switch according to claim 1, characterized in that that the undervoltage release forms an independent attachment in which the release lever is guided to the outside and engages in the switching mechanism of the neighboring miniature circuit breaker in a disengaging manner. 4. Circuit breaker according to Claim 1 and 2, characterized in that that the undervoltage release (1) unlatches on the switching mechanism when an undervoltage occurs of the additional single pole. Switch acts and the Ejitklinkung the switching mechanisms, the single-pole line protection " sphalter takes place via coupling elements. 009886 / 0.375 5. Circuit breaker according to claim 1 to 3, characterized in that that the undervoltage release (1) of the additional switch is constantly under voltage on the input side lies. ■ 6 ... circuit breaker according to claims 1 and 2, characterized in that the additional single-pole switch with regard to its switching mechanism (8) and switching contact ( 6, 12 ) as well as its arc extinguishing device (13) is the same as the single-pole circuit breaker. is trained. · ■ 7. Circuit breaker according to claims 1-6, thereby characterized in that the attachment (1) above its base has the same height and depth as the single-pole Has circuit breaker. 8. Circuit breaker according to claims 1-6, characterized in that the attachment (1) is the same Width as the single-pole miniature circuit breaker. 009886/0375