Molded case circuit breaker with residual current protection

A technology of molded case circuit breaker and residual current, applied in the direction of protection switch operation/release mechanism, switchgear status indication, etc., can solve the problems of large size and uncompact structure of circuit breakers, and achieve rapid response, small space occupation, and reliability. high sex effect

Pending Publication Date: 2018-07-24
XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the circuit breaker is larger in size and less compact in structure.

Method used

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  • Molded case circuit breaker with residual current protection
  • Molded case circuit breaker with residual current protection
  • Molded case circuit breaker with residual current protection

Examples

Experimental program
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Embodiment

[0035] see Figure 1 to Figure 11 As shown, a molded case circuit breaker with residual current protection of the present invention includes a base 1, a handle 2, a draw bar 4 and an earth leakage release 3; the handle 2 and the draw bar 4 are respectively installed on the base 1 Above; the leakage release 3 uses a magnetic flux converter 31 as a tripping drive element, and the leakage release 3 and the handle 2 are installed side by side on the same side of the base 1 relative to the drawbar 4, and the magnetic flux converter The extension direction of the push rod 311 of 31 is opposite to the tripping movement direction of the push rod 311, and is the same as the buckling direction of the circuit breaker. The push rod 311 of the magnetic flux converter 31 is connected with the moving iron core of the magnetic flux converter 31 .

[0036] Between the handle 2 and the leakage release 3 is also equipped with a rotary push rod 5 linked with the handle 2, and the rotary push rod...

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PUM

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Abstract

The invention discloses a molded case circuit breaker with residual current protection. The molded case circuit breaker comprises a base, a handle, a draw bar and a leakage release; the handle and thedraw bar are mounted on the base; the leakage release adopts a flux converter as a release drive component, and the leakage release and the handle are mounted on the same side of the base with respect to the draw bar side by side; the extension direction of a push rod of the flux converter and the release motion direction of the push rod are opposite, and are identical to the loading direction ofthe circuit breaker. The invention can achieve accurate quick and reliable leakage protection through structural improvement; and the molded case circuit breaker has a small size and a compact structure, and the leakage indication is not prone to jamming.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a molded case circuit breaker with residual current protection. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. [0003] Ordinary molded case circuit breakers only have short circuit (commonly known as instantaneous, short delay), overload (commonly known as delay, long delay), and do not have leakage protection functions. Leakage circuit breakers (standards are called circuit breakers with residual current protection) In addition to short circuit (commonly known as instantaneous, short time delay), overload (commonly known as time delay, long time delay), there is also a leakage protection function. Therefore, the leakage circuit breaker is usually equipped with a leakage r...

Claims

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Application Information

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IPC IPC(8): H01H71/24H01H71/10H01H71/50H01H71/04
CPCH01H71/04H01H71/10H01H71/24H01H71/50
Inventor 王应波欧志山林耀国卓江海
Owner XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD
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