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Electric leakage circuit breaker

A leakage circuit breaker and casing technology, which is applied to circuit breaker components, circuits, and circuit breaker contacts, etc., can solve the problem of incomplete arc extinguishing

Pending Publication Date: 2020-10-23
YUEQING ONESTO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the circuit breaker in the prior art has incomplete arc extinguishing and secondary arc burning, the present invention provides a leakage circuit breaker, which is provided with an arc extinguishing rib, which can effectively isolate and extinguish the arc

Method used

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  • Electric leakage circuit breaker
  • Electric leakage circuit breaker
  • Electric leakage circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] combined with Figure 1-2, this embodiment proposes a leakage circuit breaker, including a housing 42, the housing 42 is provided with an L pole entry and exit line post, an N pole entry and exit line post, a magnetic tripping mechanism, an operating mechanism, and a thermal tripping mechanism and arc extinguishing system; wherein, the operating mechanism is connected to one end of the tripping frame 16; the other end of the tripping frame 16 is connected to the L pole moving contact 21 and the N pole moving contact 37; the runner 15 is located on the tripping frame Below 16, the runner 15 is connected to one end of the moving contact compression spring 19, and the other end of the moving contact compression spring 19 is connected to one end of the L pole moving contact 21; the other end of the moving contact compression spring 19 The other side of the N pole moving contact 37 is connected to one end; the other end of the L pole moving contact 21 is in detachable contac...

Embodiment 2

[0040] combined with Figure 1-2 , this embodiment proposes an earth leakage circuit breaker, which is improved as follows on the basis of the technical solution of Embodiment 1: the operating mechanism includes a handle 1, and a trip frame 16 and a runner 15 that are separably engaged with each other, and the handle is twisted Spring 3, trip extension spring 4, trip pressure spring 18 and U-shaped bar 2; one end of the handle torsion spring 3 is fixedly connected to the housing 42, and the body of the handle torsion spring 3 is assembled in the center of the circular part of the handle 1 In the cylindrical hole at the place, the other end of the handle torsion spring 3 is fixed on the surface of the circular part of the handle 1. As one of the implementations of this embodiment, the surface of the circular part of the handle 1 is provided with a Place the bar-shaped groove at the other end of the handle torsion spring 3 to fix the handle torsion spring 3, and generate torsion...

Embodiment 3

[0051] combined with Figure 1-2 , this embodiment proposes a leakage circuit breaker, which is improved on the basis of the technical solution of embodiment 1 or 2 as follows: it also includes a partition 45 for isolating the circuit board 41 .

[0052] The separator 45 is used to isolate the circuit board 41, and the circuit board 41 is used to amplify the leakage current, and is also used to set the leakage current safety threshold, that is, when the leakage current is lower than the leakage current safety threshold, the leakage current is within a safe range Inside, the circuit breaker will not perform leakage protection action; when the leakage current is higher than the leakage current safety threshold, the leakage current exceeds the safe range, the circuit board 41 amplifies the leakage current, and sends it to the leakage coil 52, and the leakage coil 52 is electrified, produces magnetoelectric effect, attracts moving iron core 7 action, and described moving iron core...

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Abstract

The invention discloses an electric leakage circuit breaker, and relates to the technical field of circuit breakers. The electric leakage circuit breaker comprises a shell that is provided with an L-pole incoming and outgoing line column, an N-pole incoming and outgoing line column, a magnetic tripping mechanism, an operating mechanism, a thermal tripping mechanism, and an arc extinguishing system. The operating mechanism is connected with one end of a tripping frame; the other end of the tripping frame is connected with an L-pole moving contact and an N-pole moving contact; a rotating wheel is located under the tripping frame and connected with one end of a moving contact pressure spring, and one side of the other end of the moving contact pressure spring is connected with one end of theL-pole moving contact; the other side of the other end of the moving contact pressure spring is connected with one end of the N-pole moving contact; the other end of the L-pole moving contact is in separable contact with the L-pole static contact; and the other end of the N-pole moving contact is in separable contact with the N-pole static contact. Aiming at the technical problem that secondary arcing is formed due to incomplete arc extinguishing of a circuit breaker in the prior art, an arc extinguishing rib is arranged on an N pole, the product space design is optimized, and an electric arccan be effectively isolated and extinguished.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a leakage circuit breaker. Background technique [0002] The RCBO circuit breaker is used to make, carry and break the current under normal circuit conditions, and can open the contacts when the residual current reaches the specified value under specified conditions, and can also be used under specified abnormal circuit conditions (such as short circuit) A mechanical switching device that can be turned on for a certain period of time and automatically breaks the current. The L pole of the existing RCBO circuit breaker is generally composed of a magnetic stripper (including moving iron core, static iron core, iron core spring, yoke, static contact rod, electromagnetic coil, coil skeleton, coil, ejector rod and other parts), an operating mechanism (including handle, connecting rod, jumper, lock, release frame, lever, lock spring, contact spring, return spring, moving cont...

Claims

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Application Information

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IPC IPC(8): H01H71/02H01H71/08H01H71/10H01H71/12H01H71/40H01H71/50H01H71/74H01H73/04H01H73/18H01H83/04
CPCH01H71/0207H01H71/08H01H71/10H01H71/128H01H71/40H01H71/50H01H71/7436H01H73/04H01H73/18H01H83/04
Inventor 徐照伟郭得道赵燕威
Owner YUEQING ONESTO ELECTRIC CO LTD
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