DANSK DSF/PREN IEC 60947-5-1 PDF

This part of IEC 60947 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. It applies to control circuit devices having a rated voltage not exceeding 1 000 V AC (at a frequency not exceeding 1 000 Hz) or 600 V DC. This document applies to specific types of control circuit devices as contained in the following non exhaustive list: – manually operated control switches; – electromagnetically operated control switches, either time-delayed or instantaneous; – contactor relays; – pilot switches; – pressure switches; – temperature sensitive switches (thermostats); – programmers; – position switches; – control switches operated by part of a machine or mechanism; – associated control circuit equipment, for example indicator l ights; – control circuit devices incorporating semiconductor switching elements; – control circuit devices incorporating a built-in single drop digital communication interface. NOTE 1 – Control circuit devices and switching elements are referred to as "equipmen t" or “device” equally in this document.