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A circuit breaker for low-voltage switchgear

A low-voltage switchgear and circuit breaker technology, which is applied to protection switches, components of protection switches, operation/release mechanisms of protection switches, etc., can solve problems such as opening and closing failures, poor contact, and disconnected circuit breakers, etc., to achieve Guaranteed uniformity, easy fixation, and shortened distance

Active Publication Date: 2021-09-07
山东德源电力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mainly used to connect and cut off the power supply line. This kind of switch has the function of overload, short circuit and undervoltage protection. It is often used in circuits that are not frequently connected and cut off. The poor contact of the auxiliary contact will cause the control circuit to be disconnected and cause the circuit breaker to fail to open and close

Method used

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  • A circuit breaker for low-voltage switchgear
  • A circuit breaker for low-voltage switchgear
  • A circuit breaker for low-voltage switchgear

Examples

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Embodiment

[0027] see Figure 1-Figure 6 , the present invention provides a circuit breaker for a low-voltage switchgear, the structure of which includes a cover 1, a telescopic rail buckle 2, a tripping coil 3, an operating handle 4, a contact 5, and an arc extinguishing chamber, and the operating handle 4 is horizontally corresponding to the cover 1 A trip coil 3 is installed inside, an arc extinguishing chamber is installed directly above the trip coil 3, a telescopic rail buckle 2 is installed directly above the arc extinguishing chamber, and a contact 5 is installed at the bottom of the trip coil 3;

[0028] The tripping coil 3 includes a first spring 3-1, a strut 3-2, a coil bar 3-3, a booster 3-4, a double clip bar 3-5, an armature 3-6, and a slide bar 3-7. The slide bar 3-7 is distributed with more than two armatures 3-6, each end of each armature 3-6 is equipped with a coil bar 3-3, and the coil bar 3-3 is close to the end of the armature 3-6 All are equipped with boosters 3-4,...

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Abstract

The invention discloses a circuit breaker for a low-voltage switch cabinet. The structure includes a cover, a telescopic rail buckle, a trip coil, an operating handle, a contact, and an arc extinguishing chamber. A trip coil is installed inside the cover corresponding to the level of the operating handle, and the trip coil is directly above the There is an arc extinguishing chamber, a telescopic rail buckle is installed directly above the arc extinguishing chamber, and a contact is installed at the bottom of the tripping coil. There are more than two armatures distributed on the slide bar, and coil strips are installed at both ends of each armature. The present invention inserts the coil strips through the annular conductive ring to increase the contact area with the armature. Even if the direction of the armature deviates slightly, the contact Touch the conductive ring to form a complete circuit. The present invention cooperates with the double clamping rod and the fixing rod to clamp the coil bar under the pressure of the second spring to prevent the coil bar from moving back and forth, and directly improve the coil bar to be installed on the Stability in the conductive loop.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to a circuit breaker for a low-voltage switch cabinet. Background technique [0002] Low-voltage circuit breaker is one of our most common low-voltage electrical appliances. Low-voltage circuit breaker, also known as air switch, is a low-voltage switch that can be controlled manually or automatically. It is mainly used to connect and cut off the power supply line. This kind of switch has the function of overload, short circuit and undervoltage protection. It is often used in circuits that are not frequently connected and cut off. The poor contact of the auxiliary contact will cause the control circuit to be disconnected and cause the circuit breaker to fail to open and close. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention is realized through the following technical solutions: a circuit breaker for low-voltage switchgear, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/24H01H71/02
CPCH01H71/0207H01H71/24
Inventor 李丰生任光海牛节省潘清云
Owner 山东德源电力科技股份有限公司
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