Rotor shaft module, rotor shaft, compact circuit breaker and method for producing rotor shaft module

Abstract

A rotor shaft module for a rotor shaft of a molded-case circuit breaker, includes a module body including an electrically insulating first material, the module body including a receptacle for a contact element of the molded-case circuit breaker. The rotor shaft module includes at least one coupling apparatus for connection to an opposing coupling apparatus of a further rotor shaft module. In addition, disclosed are a rotor shaft for a molded-case circuit breaker includes at least two coupled rotor shaft modules; a molded-case circuit breaker including a rotor shaft; and a method for producing a rotor shaft module for a rotor shaft of a molded-case circuit breaker.

Description

technical field [0001] The invention relates to a rotor shaft module for a rotor shaft of a compact power switch, the rotor shaft module having a module body made of a first electrically insulating material, wherein the module body has a a receptacle for a contact element of a power switch, and the rotor shaft module has at least one coupling device for connection to a mating coupling device of another rotor shaft module. Furthermore, the invention relates to a rotor shaft for a compact power switch, a compact power switch with a rotor shaft and a method for producing a rotor shaft module for a rotor shaft for a compact power switch. Background technique [0002] In modern technology, compact power switches (MCCB=Molded Case Circuit Breaker) are known and widely used. Such compact power switches are especially capable of switching relatively high currents or powers. Since such compact power switches are often also provided with safety devices, such as overload protection a...

AI Technical Summary

Problems solved by technology

However, due to these small production tolerances, in particular in order to avoid pre-damages at the connection due to these small tolerances, it is necessary to take measures when manufacturing and installing the rotor shaft module of the compact power switch. troublesome measures

In order to transmit the occurring rotational forces, tolerances that are partly already so small are required during the manufacture of the rotor shaft module that, when the rotor shaft module is installed as a rotor shaft only slightly imperfectly or only carelessly, Damage to the coupling

In addition, the maximum transmittable rotational force between the individual rotor shaft modules is limited due to the use of plastic

However, this also limits the magnitude of current or the level of power that can be converted by the compact power switch

The reason for this is that higher currents or higher powers also result in higher current intensities, wherein the resulting higher torques are no longer available in the worst case when the compact power switch is disconnected. cannot be reliably transmitted via the connection between the individual rotor modules of the rotor shaft of the compact power switch

As a result, failure of the compact power switch at higher currents or higher current outputs cannot be reliably ruled out.

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