IEC 60934:2000 pdf download-Circuit-breakers for equipment (CBE).
3 Definitions For the purposes if this International standard, the following definitions apply. 3.1 Definitions related to protection and switching devices 3.1.1 circuit-breaker mechanical switching device, capable of making, carrying and breaking currents under normal circuit conditions and also making, carrying for a specified time and breaking currents under specified abnormal conditions such as those of short circuit [IEV 441-14-20] 3.1.2 circuit-breaker for equipment (CBE) circuit-breaker specifically designed for the protection of equipment 3.1.3 CBE-switch CBE without overcurrent releases, equipped or not with releases tripping by voltage or by mechanical means NOTE The relevant specific requirements are given in annex K. 3.1.4 fuse device that, by the fusing of one or more of its specially designed and proportioned components, opens the circuit in which it is inserted by breaking the current when this exceeds a given value for a sufficient time. The fuse comprises all of the parts that form the complete device [IEV 441-18-01] 3.1.5 switching device device designed to make or break the current in one or more electric circuits [IEV 441-14-01]
3.1.6 mechanical switching device switching device designed to close and open one or more electric circuits by means of separable contacts [IEV 441-14-02] 3.1.7 switch (mechanical) mechanical switching device capable of making, carrying and breaking currents under normal circuit conditions which may include specified operating overload conditions and also carrying for a specified time currents under specified abnormal circuit conditions such as those of short circuit [IEV 441-14-10] 3.1.8 disconnector mechanical switching device which in the open position complies with the requirements specified for the isolating function [IEV 441-14-05, modified] 3.1.9 disconnection interruption of an electrical circuit in a pole so as to provide insulation between the supply and those parts intended to be disconnected from the supply 3.1.10 full-disconnection disconnection that provides the equivalent of basic insulation by contact separation 3.1.11 micro-disconnection disconnection that provides compliance of performance by contact separation 3.1.12 isolation (isolating function) function intended to cut off the supply from all or a discrete section of the installation by separating the installation from every source of electrical energy for reasons of safety.