Multifunctional circuit breaker accessory

Abstract

The invention discloses a multifunctional circuit breaker accessory which comprises a shell. Auxiliary contacts are arranged in the shell, the auxiliary contacts comprise a moving contact and a fixed contact, the moving contact is connected with a handle operating mechanism, a tripper is arranged in the handle operating mechanism, and the tripper is rotatably connected on a rotating shaft. An electromagnetic coil is also arranged in the shell, leads at both ends of the electromagnetic coil are connected with a connecting terminal and a shunt lead, and the top of the electromagnetic coil is provided with an armature lever. The rear end of the armature lever is hinged to the shell, and the front end of the armature lever is connected with a push lever. When the rear end of the armature lever rotates, the push lever can push the tripper to rotate so that the handle operating mechanism is tripped. In the invention, various functions of undervoltage (overvoltage) tripping, shunt tripping, auxiliary contacts and the like are realized in one shell, several common circuit breaker accessories are organically integrated, the multifunctional circuit breaker accessory has compact structure and small size, one accessory has multiple purposes, and the user cost is reduced.

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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