Double breakpoint moulded case circuit breaker having modularized structure

A molded case circuit breaker and double breakpoint technology, which is applied to circuit breaker parts, circuit breaker contacts, circuits, etc., can solve the problems of complex assembly and multiple components of multi-pole circuit breakers, and reduce production and assembly Quantity, simple structure, and the effect of saving production costs

Pending Publication Date: 2018-02-02
BEIJING MINGRI ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Double breakpoint molded case circuit breaker is a relatively new type of molded case circuit breaker. The traditional double breakpoint molded case circuit breaker adopts a split structure, that is, the moving contact, static contact, arc extinguishing cover, rotating shaft and The shell and so on are made into a separate unit body, and then combined into a multi-pole circuit breaker. This multi-pole circuit breaker requires many components and is complicated to assemble.

Method used

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  • Double breakpoint moulded case circuit breaker having modularized structure
  • Double breakpoint moulded case circuit breaker having modularized structure
  • Double breakpoint moulded case circuit breaker having modularized structure

Examples

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Embodiment Construction

[0021] combine Figure 1 to Figure 6 , the present invention will be further described through specific examples.

[0022] It should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and so on are based on the orientation or positional relationship shown in the drawings, rather than indicating or implying the No device or element must have a specific orientation, be constructed, and operate in a specific orientation and therefore should not be construed as limiting the invention.

[0023] figure 1 It is a single-pole structural diagram of a traditional double-breakpoint molded case circuit breaker. The double-breakpoint moving contact 3, the rotating shaft 4, the upper static contact 1, the lower static contact 5, and the arc extinguishing cover 6 are placed on the upper cover 7 and the lower cover. In the cover 2, a single-pole unit is formed, and then combined into a 2-4 pole double-break point molded case cir...

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PUM

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Abstract

The invention provides a double breakpoint moulded case circuit breaker having a modularized structure. Upper and lower covers have a three-pole integrated moulded structure. The upper and lower static contact connecting pieces of the moulded case circuit breaker are moulded in flame-retardant and high-temperature-resistant insulating material. Arc isolating walls are arranged among the poles of the upper and lower covers. The circuit breaker is also provided with an independent fourth single pole. The upper and lower covers of the circuit breaker and the three-pole rotating shaft use the integrated moulded structure so that the structure of the circuit breaker is enabled to be quite simple and the production cost can be saved. The independent fourth pole is adopted and the single pole part can be arranged at the left or right of the three-pole part according to the requirements so as to meet the requirements of different customers at home and abroad.

Description

technical field [0001] The invention relates to a low-voltage electrical appliance, in particular to a modular double-breakpoint molded case circuit breaker. Background technique [0002] Molded case circuit breaker is a commonly used protective device. It has the functions of on-off load current and overload and short-circuit protection of load current. It is widely used in overload and short-circuit protection of various power distribution systems and motors. Double breakpoint molded case circuit breaker is a relatively new type of molded case circuit breaker. The traditional double breakpoint molded case circuit breaker adopts a split structure, that is, the moving contact, static contact, arc extinguishing cover, rotating shaft and The casing and the like are made into separate units, and then combined into a multi-pole circuit breaker. This multi-pole circuit breaker requires many components and is complicated to assemble. With the continuous emergence of new flame-ret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01H73/04
CPCH01H71/0235H01H73/04
Inventor 不公告发明人
Owner BEIJING MINGRI ELECTRICAL EQUIP
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