Circuit breaker module

Abstract

The utility model relates to the technical field of electric box parts, in particular to a circuit breaker module. Comprising a plurality of circuit breaker single bodies, each circuit breaker single body comprises a normally-open switch, a normally-closed switch, a thermal protection coil and an alarm, the normally-open switch and the normally-closed switch form a two-stage linked switch, and the normally-open switch is connected with the thermal protection coil in series; the alarms of the adjacent circuit breaker single bodies are connected through a diode. When a certain circuit breaker single body is triggered, the alarm of the adjacent circuit breaker single body can also give an alarm together, so that the alarm range is expanded, and patrol personnel can be more effectively prompted that the circuit section is abnormal.

Description

Technical Field

[0001] This utility model relates to the field of electrical box components technology, and in particular to a circuit breaker module. Background Technology

[0002] A circuit breaker (also called an air switch) typically consists of a normally open switch connected in series with a thermal protection coil. Its working principle is that when the load is short-circuited, the thermal protection coil instantly generates a large magnetic force that attracts the normally open switch to open, thus protecting the circuit. Additionally, to alert the user to any circuit abnormalities, the normally open switch is also linked to a normally closed switch, which is connected in series with an alarm device, such as a light or buzzer.

[0003] For example, Chinese patent 201010579331.7 discloses a multi-functional air switch, which describes an overcurrent protection circuit equipped with a two-stage linkage switch (KM2-KM3) and a thermal protection coil (L2) that causes the normally closed switch (KM3) to open when the current is too high. The two-stage linkage switch (KM2-KM3) includes a normally open switch (KM2) and a normally closed switch (KM3). When the normally closed switch (KM3) is closed, the normally open switch (KM2) is opened. When the normally closed switch (KM3) opens, the normally open switch (KM2) closes. One end of the normally closed switch (KM3) is connected to the circuit node between the parallel branch and the AC electromagnetic coil (L1), and the other end is connected to the neutral wire via the load after being connected in series with the thermal protection coil (L2). One end of the normally open switch (KM2) is connected to the circuit node between the parallel branch and the normally closed switch (KM3), and the other end is connected to the neutral wire after being connected in series with a buzzer (S) and a resistor (R2). Therefore, when the load current is too large, causing the thermal protection coil (L2) to open the normally closed switch (KM3), and then the normally open switch (KM2) closes to form a circuit, the load is de-energized, and the buzzer (S) sounds an alarm.

[0004] In practical use, the specific number and configuration of circuit breakers should be determined based on the actual circuit design and load conditions of the workshop. Generally, the main distribution box should be equipped with a main switch and a residual current device (RCD), while the sub-distribution boxes and switch boxes are set up according to the specific circuit sections and load requirements. Each section should be equipped with a corresponding circuit breaker to ensure that the power supply can be quickly cut off in the event of a circuit fault, protecting equipment and personnel safety. In the existing technology, each circuit breaker in each circuit section only alarms for itself, meaning that the alarm is only known to the inspector when they inspect that circuit breaker (circuit section). Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a circuit breaker module that can issue alarms together with circuit breaker modules connected to adjacent circuit segments, thereby expanding the alarm range.

[0006] The technical solution of this utility model is as follows:

[0007] A circuit breaker module includes multiple individual circuit breaker units. Each individual circuit breaker unit includes a normally open switch, a normally closed switch, a thermal protection coil, and an alarm. The normally open switch and the normally closed switch form a two-stage interlocking switch, and the normally open switch is connected in series with the thermal protection coil. The alarms of adjacent circuit breaker units are connected by a diode. When one circuit breaker unit is triggered, the alarms of adjacent circuit breaker units will also be triggered, thereby expanding the alarm range and more effectively alerting inspectors to any abnormalities in this circuit segment.

[0008] In a preferred embodiment of this disclosure, the alarm is a buzzer, capable of emitting an audible alarm.

[0009] In a preferred embodiment of this disclosure, the alarm is a dual-color strobe LED. It provides an illuminating alarm.

[0010] In a preferred embodiment of this disclosure, a protective resistor is provided between the normally closed switch and the alarm to extend the service life of the alarm.

[0011] In a preferred embodiment of this disclosure, the thermal protection coil is connected in series with an indicator LED, which indicates the circuit normally when the circuit is open and turns off when the circuit is closed.

[0012] In a preferred embodiment of this disclosure, the circuit further includes a master switch for manually controlling the power supply to the entire circuit breaker unit.

[0013] Beneficial effects of this utility model

[0014] According to this disclosure, alarms of adjacent circuit breaker units are connected in series. When a circuit breaker unit is triggered, it will trigger alarms of adjacent circuit breaker units, expanding the alarm range without affecting the operation of adjacent circuit breaker units. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Example 1.

[0016] In the diagram, 1 represents the first circuit breaker unit and 2 represents the second circuit breaker unit.

[0017] Figure 2 This is a schematic diagram of the structure of Example 2.

[0018] Figure 3 This is a schematic diagram of the structure of Example 3.

[0019] Figure 4 This is a schematic diagram of the structure of Example 4.

[0020] Figure 5This is a schematic diagram of the structure of Example 5. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0022] Example 1

[0023] like Figure 1 As shown, at least two circuit breaker units are provided. The first circuit breaker unit 1 and the second circuit breaker unit 2 have the same structure. The live wire of the first circuit breaker unit 1 is connected to the input terminals of the normally open switch KM1 and the normally closed switch KM2. The output terminal of the normally open switch KM1 is connected to the first terminal of the thermal protection coil L1. The output terminal of the normally closed switch KM2 is connected to the input terminal of the buzzer S. The output terminal of the buzzer S is grounded and connected to the input terminal of the diode D1. The output terminal of the diode D1 is connected to the buzzer input terminal of the second circuit breaker unit 2.

[0024] Example 2

[0025] like Figure 2 As shown, the buzzer is replaced with a dual-color strobe LED, and the rest of the structure is the same as in Example 1.

[0026] Example 3

[0027] like Figure 3 As shown, a protective resistor is provided between the normally closed switch and the alarm, and the rest of the structure is the same as in Embodiment 2.

[0028] Example 4

[0029] like Figure 4 As shown, an indicator LED is provided between the thermal protection coil and the load, and the rest of the structure is the same as in Embodiment 3.

[0030] Example 5

[0031] like Figure 4 As shown, a main switch KM3 is provided between the live wire and the normally open switch, and the rest of the structure is the same as in embodiment 4.

[0032] Although a circuit breaker module according to an embodiment of the present disclosure has been described above, aspects of the present disclosure are not limited to the above embodiments, and the present disclosure can be implemented in a variety of ways within the scope of the present disclosure.

Claims

1. A circuit breaker module, characterized in that, It includes multiple circuit breaker units, each circuit breaker unit comprising a normally open switch, a normally closed switch, a thermal protection coil, and an alarm. The normally open switch and the normally closed switch form a two-stage linkage switch, and the normally open switch is connected in series with the thermal protection coil. The alarms of adjacent circuit breaker units are connected by a diode.

2. The circuit breaker module according to claim 1, characterized in that: The alarm is a buzzer.

3. The circuit breaker module according to claim 2, characterized in that: The alarm is a dual-color flashing LED.

4. The circuit breaker module according to claim 3, characterized in that: A protective resistor is provided between the normally closed switch and the alarm.

5. The circuit breaker module according to claim 4, characterized in that: The thermal protection coil is connected in series with an indicator LED.

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