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Circuit breaker

A circuit breaker, external electric technology, applied in the field of resettable thermal/electrical circuit breaker, to achieve the effect of saving cost, manufacturing economy, contact resistance halved

Active Publication Date: 2010-09-01
杰姆斯·艾里逊 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting large contact area provides low contact resistance, but this is usually not sufficient to exclude the occurrence of intermittent continuous

Method used

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Examples

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Embodiment Construction

[0020] The invention applies to both push-to-reset and switch-operated circuit breaker configurations, but only the push-to-reset circuit breaker configuration is described here. The invention set forth should be considered a typical application and not limited to this type of circuit breaker.

[0021] exist figure 1 In , the circuit breaker consists of two similar half-shells 20 and 21 made of molded insulating material. Rivets 22, 23, 24 and 25 permanently hold the circuit breaker together. Terminals 26, 27 for connecting the circuit breaker to the electronic circuit extend outwards from the bottom of the half-housing. Extending outwardly from the top of the half-shell is a bolt 28 which serves as a fixed mounting means when using the circuit breaker described above. Extending outwardly from the top of the stud 28 is a push rod 29 for resetting a tripped circuit breaker.

[0022] The housing parts combine to form a closed separable contact chamber, one half of which con...

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PUM

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Abstract

The invention relates to a returnable, single phase, heat / electrical circuit breaker which employs a U-shape dual metallic assembly having large impedance property which can self-heat and shift to start a device to cut off the breaker circuit when a predetermined overload current appears. The invention uses a single contact point cutting-off structure replacing dual-contact point cutting-off structure in relation to the breaker, and the single contact point cutting-off structure generates a sliding motion between the contact points so as to provide more reliable continuity for movable and fixed contact point ports and decrease the production cost.

Description

[technical field] [0001] The present invention comprises a resettable thermal / electrical circuit breaker of the single contact opening type supported by a U-shaped bimetallic thermal assembly. [Background technique] [0002] A circuit breaker with double contact opening supported by a U-shaped bimetal thermal element is widely used in electronic circuits to prevent current overload. Examples of such circuit breakers in the prior art assigned to the assignee of the present invention are included in the attached Figure 9 The 02 series circuit breakers described in and the inventions disclosed in US Patents 2,513,564, 2,514,545 and 2,689,895. Due to the relatively high contact resistance of the two pairs of contacts used in these designs, they are prone to intermittent loss of electrical continuity in low open circuit voltage applications. Each time a circuit breaker contact is opened and closed again, a new and unique contact contact surface is formed which changes the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H37/64H01H37/52H01H37/60H01H37/08
Inventor 杰姆斯·艾里逊威廉·博乐科
Owner 杰姆斯·艾里逊