Multifunctional circuit breaker accessory

Abstract

A multifunctional breaker accessory comprises a shell (1) inside which auxiliary contacts are arranged. The auxiliary contacts are composed of a movable contact (6) and fixed contacts (7, 8). The movable contact is connected with a handle operating mechanism (3). A jumping fastener (4) is arranged in the handle operating mechanism. The jumping fastener is connected to a rotating shaft (13) in a rotatable manner. An electromagnetic coil (10) is also provided in the shell. The leads at two ends of the electromagnetic coil are connected with a connecting terminal (12) and a shunt lead (11). An armature level (9) is provided at the top of the electromagnetic coil. The rear end of the armature level is hinged with the shell. And the front end of the armature level is connected with a push level (14). The push level pushes the jumping fastener to be rotated so as to release the handle operating mechanism when the armature level rotates around the rear end. The breaker accessory has a compact structure, a small volume and a reduced manufacturing cost, and enables under-voltage release or over-voltage release, shunt release and auxiliary contact functions and so on in one shell.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a multifunctional accessory that can realize shunt tripping, undervoltage (overvoltage) tripping and auxiliary contact functions when used in conjunction with a circuit breaker. Background technique [0002] In some applications, it is necessary to attach some accessories to the circuit breaker to expand the function of the circuit breaker. Now, the more commonly used circuit breaker accessories are: undervoltage (or overvoltage) release, shunt release and auxiliary contacts, etc., where the auxiliary contact can be a single auxiliary contact, or both Open contacts in turn include double auxiliary contacts for normally closed contacts. These accessories can sometimes be installed inside the circuit breaker; but for small circuit breakers, these accessories are often installed outside the circuit breaker, connected in series with each other through linkage rods, a...

AI Technical Summary

Problems solved by technology

[0003]In the prior art, each accessory is often a single-function, an independent module packaged separately. When multiple functions need to be expanded on the circuit breaker, it is necessary to Install multiple accessories, resulting in large space occupation and high cost defects

[0004] Chinese utility model patent 02244113.1 discloses an "automatic air circuit breaker integrated release", which integrates the undervoltage release and the shunt release, but this structure cannot realize the function of overvoltage release , nor does it function as an auxiliary contact

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