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High Intermittent Rated Molded Case Circuit Breakers

A technology for interrupters and circuit breakers, which is applied to circuits, parts of protective switches, electrical components, etc., and can solve problems such as increasing the overall size of circuit breakers

Active Publication Date: 2018-03-02
SCHNEIDER ELECTRIC USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But increasing the overall size of the circuit breaker is not advisable in space-constrained installations

Method used

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  • High Intermittent Rated Molded Case Circuit Breakers
  • High Intermittent Rated Molded Case Circuit Breakers
  • High Intermittent Rated Molded Case Circuit Breakers

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Embodiment Construction

[0041] Although the subject matter will be described in conjunction with certain aspects, it will be understood that the subject matter described herein is not limited to those specific aspects. On the contrary, the subject matter of the present invention is intended to cover all alternatives, modifications and equivalent structures as may be included within the spirit and scope defined by the appended claims.

[0042] refer to figure 1 , generally an electromechanical device, such as a circuit breaker 100, will be described, here of the molded case circuit breaker (MCCB) type. The circuit breaker 100 typically includes an ampoule assembly 200 (such as figure 2 Shown) housing or base 102, wherein the ampoule assembly 200 includes one or more line terminals 106A and one or more load terminals 106B. As used herein, the terms ampoule assembly and interrupter assembly are used interchangeably. Such as figure 1 As shown, the housing or base 102 is designed to at least partiall...

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Abstract

A circuit breaker with increased intermittent rating without increasing the size of the circuit breaker while maintaining full compliance with UL and IEC standards. Adhesive (420, 422, 424) is applied to the bottom surface (411, 412, 414) near the vent (220a-c) of the interrupter. The interrupter housing is formed by joining two parts (302, 304), and adhesive is applied across the two parts. Adhesive adheres to the bottom inner surface (402) of the base of the circuit breaker, securing the interrupter assembly to the base. The adhesive prevents the two parts of the interrupter housing from separating during the interrupting event, and prevents the interrupter assembly from being lifted away from the base during the interrupting event. The adhesive can act as a barrier to prevent interfering gases and contaminants that do not escape from the vent holes of the base from entering between the bottom of the interrupter assembly and the interior of the base.

Description

technical field [0001] The present disclosure relates generally to electrical distribution equipment, and more particularly, to a high interrupting rating circuit breaker. Background technique [0002] Circuit breakers are designed to have an intermittent rated capacity (also known as working breaking capacity or I CS ), the intermittent rated capacity specifies the rated maximum theoretical current that a circuit breaker can handle in a repeatable and safe manner that will not cause damage to the physical or operational integrity of the circuit breaker. For example, a circuit breaker may have an operational breaking capacity (or intermittent rating) of 20 kA at a maximum voltage of 690V. But this rated capacity is not enough for installations with high current availability such as ships, buildings or information technology installations, which can have current availability up to 100kA at a maximum voltage of 690V. For these installations, a single 20kA circuit breaker can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/02
CPCH01H71/0257H01H9/342H01H71/0228H01H71/0271Y10T29/49105
Inventor 尤金·维尔
Owner SCHNEIDER ELECTRIC USA INC