CN221766651U - Plug-in circuit breaker for series installation and assembly thereof - Google Patents

Abstract

A plug-in circuit breaker for serial installation and an assembly thereof are disclosed, having a base element and a plug with a circuit breaker, the plug being detachably inserted into the base element, the base element having a mounting element for mounting on a mounting rail, the base element having a first electrical connector which is guided into an insertion region in contact with one end of the inserted plug and a second electrical connector which is guided into the insertion region in contact with the other end of the inserted plug, at least a first bridging groove being provided in the insertion region, the first bridging groove providing an electrical connection to the first electrical connector or to the second electrical connector, one bridging plug being inserted into the first bridging groove leading out of the first electrical connector or the second electrical connector for serial installation, the plug in an inserted state covering the bridging plug such that the bridging plug cannot be removed.

Description

Plug-in circuit breaker for series installation and assembly thereof

Technical Field

The present utility model relates to a plug-in circuit breaker for serial installation and an assembly thereof.

Background

Thermomagnetic circuit breakers for equipment protect electrical equipment from overload and short-circuit currents. If the circuit breakers of these devices fail, they must be replaced. In order to facilitate the replacement, solutions using plug-in circuit breakers have been proposed in the past.

Plug-in circuit breakers offer the further advantage that circuit breakers for devices of different current classes can be provided, and that it is possible to react in a flexible manner to the required current class by using suitable circuit breakers as plugs.

A plug-in circuit breaker is known, for example, from european patent EP 2 780 984 B1.

However, with previous thermomagnetic solutions, it is only possible to transfer the protection by the circuit breaker to the adjacent terminals to a limited extent by standard materials to achieve this potential and thus extend the protection to multiple consumers. These solutions have a disadvantageous aspect in that it is necessary to ensure that the terminals are powered down when the terminals are connected. However, this step is often forgotten.

This requires special and thus expensive solutions or individual and thus time-intensive wiring.

Although in the case of the plug-in solution known from european patent EP 2 780 984 B1, adjacent terminals can be provided by means of a bridge, this only involves the input potential. The protected output potential cannot be reproduced using a jumper.

Disclosure of Invention

It is an object of the present utility model to provide a plug-in circuit breaker for series installation and a component solution thereof, which enable to provide a distribution of the protected potential in a cost-effective manner. Furthermore, it is an object of the utility model to improve safety during installation and maintenance.

A plug-in circuit breaker for serial installation has a base element and a plug,

The plug has a circuit breaker;

The plug is removably inserted into the base element;

The base element has a mounting element for mounting on a mounting rail;

the base element has a first electrical connector and a second electrical connector;

The first electrical connector in the base element is guided into the insertion region into contact with an inserted plug end;

The second electrical connector in the base element is guided into the insertion region into contact with the other end of the inserted plug;

Providing at least a first bridging groove in the insertion region, the first bridging groove providing an electrical connection to the first electrical connector or to the second electrical connector, one bridging plug being inserted into the first bridging groove to bring out the first electrical connector or the second electrical connector for serial installation;

The plug in the inserted state covers the bridging plug such that the bridging plug cannot be removed.

The method further comprises the following steps: a second bridging groove is also provided in the insertion region, the first bridging groove providing an electrical connection to the first electrical connector, the second bridging groove providing an electrical connection to the second electrical connector, two bridging plugs being inserted into the first bridging groove and the second bridging groove, respectively.

The method further comprises the following steps: a joint for measurement is provided on the base element.

The method further comprises the following steps: the circuit breaker in the plug is a mechanical thermo-magnetic circuit breaker.

The method further comprises the following steps: the circuit breaker is a mechanical circuit breaker or a thermal circuit breaker.

An assembly having a plug-in circuit breaker according to the foregoing and a series terminal arranged adjacent to the circuit breaker, wherein the series terminal provides an electrical connection to the first electrical connector or the second electrical connector via a bridging slot located in the plug-in region by a bridging plug.

The method further comprises the following steps: the series terminal is a feeder terminal.

Drawings

The utility model is explained in more detail below with reference to the drawings on the basis of preferred embodiments.

In the accompanying drawings

Figure 1 shows a schematic perspective view of an embodiment of the utility model in an installed state,

Figure 2 shows a schematic side view of an embodiment of the utility model in an installed state,

FIG. 3 shows a schematic side view of an embodiment of the utility model in a disassembled state, and

Fig. 4 shows a schematic side view of a part of an embodiment of the utility model in a partly installed state.

List of reference numerals: 1, a plug; 2 a base element; 3 bridging plugs; 4 series terminals; 5, installing a guide rail; 6 bridging the groove; 7, releasing the piece; a first electrical connector 21; 22 second electrical connector.

Detailed Description

Embodiments of the present utility model are described in more detail below with reference to the accompanying drawings. In this case, it should be noted that different aspects are described, which may be used separately or in combination. That is, any aspect may be used with different embodiments of the present utility model, provided that it is not explicitly presented as a mere alternative.

Furthermore, in the following, for simplicity, only one entity is generally mentioned. However, the present embodiment may also have a plurality of related entities in each case, unless explicitly indicated. In this regard, the use of the words "a", "an", and "one" are to be understood as merely indicating that at least one entity is being used in a single embodiment.

Reference is made to images in the following description. In this case, the same or similar elements are generally denoted by the same or similar reference numerals.

The figure shows a plug-in circuit breaker for a series installation, with a base element 2 and a plug 1.

In this case, the plug 1 has a circuit breaker. The circuit breaker may be of any desired type, but in particular a mechanical circuit breaker or an electronic circuit breaker.

As can be seen from a comparison of fig. 2 and 3, the plug 1 can be inserted in a detachable manner into the base element 2. It may optionally be provided that removal of the plug 2 from the base element requires a detent (self-locking) release 7 or a detent ejection mechanism. This may be provided on the plug and/or the base element. The braking of the release mechanism or the braking of the ejection mechanism may be tool-less or require the use of a tool, such as a screwdriver.

Furthermore, the base element 2 has a mounting element for mounting on the mounting rail 5. These mounting elements can be configured in a tool-free manner so that the base element can be easily disengaged on the mounting rail 5 (e.g. top hat rail). For this purpose, the spring-loaded element may be formed, for example, on the base element 2, as shown in fig. 2-4.

The base element 2 has at least one first electrical connector 21 and one second electrical connector 22, wherein the first electrical connection (not shown) guides the first electrical connector 21 into the insertion area in contact with one end of the inserted circuit breaker plug 1 in the base element 2, and wherein the second electrical connection (not shown) further guides the second electrical connector 22 into the insertion area in contact with the other end of the inserted circuit breaker plug 1 in the base element 2. That is, in the case of the plug 1 (and the functional circuit breaker in the non-closed state) which is not inserted, there is no electrical connection between the first electrical connector 21 and the second electrical connector 22.

At least one first bridging groove 6 is arranged in the insertion region for inserting the bridging plug 3, the first bridging groove 6 providing an electrical connection to the first electrical connector 21 or to the second electrical connector 22, the inserted bridging plug 3 leading out of the first electrical connector (21) or the second electrical connector (22) for serial installation, wherein the plug 1 in the inserted state covers the bridging plug 3 such that it cannot be removed.

That is, during operation of installing the plug-in circuit breaker, the circuit breaker has a power supply via the first electrical connector 21 (input side) and provides a protected potential for the energy distribution of the second electrical connector 22 (protected output side). In this case, the output side may be electrically connected to the jumper bridge plug 3. In the event of a fault, the contacts in the circuit breaker open, and the circuit breaker creates (galvanic) isolation between the input side and the output side and interrupts the current. Circuit breakers typically protect against AC voltages (typically up to 277V) and DC voltages (typically up to 50V).

However, unlike the prior art, it is no longer possible to work at the jumper bridge plug 3 under voltage, since in order to be able to remove or insert the jumper bridge plug 3 in contact with it, the plug with the circuit breaker has to be removed—see fig. 4. In connection therewith, however, the electrical connection from the supply side, i.e. the first electrical connector 21 to the second electrical connector 22 (downstream of the circuit breaker) and thus also to the bridging groove 6 is interrupted, so that the bridging plug 3 of the jumper can thereafter be plugged in or out safely. Thus, there is also protection for downstream components of the electrical apparatus, which can be electrically connected by the bridge plug 3 inserted into the jumper.

According to an embodiment of the utility model, a second bridging groove for the second bridging plug 3 is also arranged in the insertion region, such that the first bridging groove provides an electrical connection to the first electrical connector 21 and the second bridging groove provides an electrical connection to the second electrical connector 22.

That is, it may additionally be provided that unprotected potentials may be transferred. Thus, for example, a plurality of plug-in circuit breakers for different electrical subsystems can be arranged adjacent to one another on the mounting rail 5. The unprotected potential can be transferred from the first base element 2 of the first plug-in circuit breaker to the second base element 3 of the second plug-in circuit breaker by means of the bridge plug 3 as a jumper.

In another embodiment, taps for sensor measurements are provided on the base element 2.

Thus, the measurement can be made at the circuit breaker without further measurement.

According to another embodiment of the utility model, the circuit breaker in the plug is a mechanical circuit breaker, in particular a thermo-magnetic circuit breaker, or an electronic circuit breaker or a thermal circuit breaker.

As already indicated above and shown in fig. 1, the present embodiment also relates to an assembly with a plug-in circuit breaker according to the utility model and a series terminal 4, the series terminal 4 being arranged adjacent to the circuit breaker, wherein the series terminal 4 is electrically connected to the first electrical connector 21 or the second electrical connector 22 by means of the bridge plug 3 via a bridge slot 6 located in the plug-in area.

The series terminal 4 may in particular be a feed-through (wire) terminal.

That is, by the present utility model, a circuit breaker with a base element can be provided whose protection potential can be distributed to standard feed-through terminals using jumpers. The jumper can only be removed or inserted if the circuit breaker is not inserted into the base element.

This makes it possible for the jumper on the output side (protection potential) of the base element to be voltage-free during operation, which is advantageous for electrical safety. Furthermore, the circuit breaker and the base element 2 are configured and arranged such that the distribution of the protected potential can be made using standard products and thus the protection can be easily extended.

Without limiting the generality of the present embodiment, the plug may be provided with circuit breakers for different current values and characteristics without having to change the base element 2.

Further, without limiting the generality of the present embodiment, not only a single-pole circuit breaker but also a multipole circuit breaker may be provided in this way. By means of a suitable configuration, these allow a plurality of protected potentials to be distributed by means of the bridging groove 6 in the plug-in region, so that in each case also protection is present, since the bridging plug 3 or the bridging groove 6 as a jumper can only be reached when the plug 1 is pulled out. For this purpose, for example, a base element 2 and an associated bridge plug 3 can be provided for each pole. Alternatively, it may be provided that a plurality of circuit breakers (one for each pole) are inserted into the common base element 2.

Claims (7)

1. Plug-in circuit breaker for series installation, with a base element (2) and a plug (1), characterized in that:

The plug (1) has a circuit breaker;

-said plug (1) is removably inserted in said base element (2);

The base element (2) has a mounting element for mounting on a mounting rail (5);

the base element (2) has a first electrical connector (21) and a second electrical connector (22);

-said first electrical connector (21) in said base element (2) is guided into the insertion area in contact with one end of the inserted plug (1);

-said second electrical connector (22) in said base element (2) is guided into the insertion area in contact with the other end of the inserted plug (1);

-at least a first bridging groove is provided in the insertion area, which provides an electrical connection to the first electrical connector (21) or to the second electrical connector (22), one bridging plug (3) being inserted into the first bridging groove leading out the first electrical connector (21) or the second electrical connector (22) for serial installation;

the plug (1) in the inserted state covers the bridging plug (3) such that the bridging plug cannot be removed.

2. Plug-in circuit breaker according to claim 1, characterized in that a second bridging groove is also provided in the plug-in area, the first bridging groove providing an electrical connection to the first electrical connector (21), the second bridging groove providing an electrical connection to the second electrical connector (22), two bridging plugs (3) being plugged into the first bridging groove and the second bridging groove, respectively.

3. Plug-in circuit breaker according to claim 1, characterized in that a joint for measurement is provided on the base element (2).

4. A plug-in circuit breaker according to any one of claims 1 to 3, characterized in that the circuit breaker in the plug (1) is a mechanical thermo-magnetic circuit breaker.

5. A plug-in circuit breaker according to any one of claims 1 to 3, characterized in that the circuit breaker is a mechanical circuit breaker or a thermal circuit breaker.

6. An assembly with a plug-in circuit breaker according to any one of claims 1 to 5, comprising a series terminal (4), characterized in that the series terminal (4) is arranged adjacent to the circuit breaker, wherein the series terminal (4) provides an electrical connection to the first electrical connector (21) or the second electrical connector (22) via a bridging slot in the plug-in area by means of a bridging plug (3).

7. The assembly according to claim 6, characterized in that the series terminal (4) is a feeder terminal.