UNE-EN IEC 60691:2023

This International Standard is applicable to thermal-links intended for incorporation inelectrical appliances, electronic equipment and component parts thereof, normally intendedfor use indoors, in order to protect them against excessive temperatures under abnormalconditions.NOTE 1 The equipment is not designed to generate heat.NOTE 2 The effectiveness of the protection against excessive temperatures logically depends upon the positionand method of mounting of the thermal-link, as well as upon the current which it is carrying.This standard may be applicable to thermal-links for use under conditions other than indoors,provided that the climatic and other circumstances in the immediate surroundings of suchthermal-links are comparable with those in this standard.This standard may be applicable to thermal-links in their simplest forms (e.g. melting strips orwires), provided that molten materials expelled during function cannot adversely interfere withthe safe use of the equipment, especially in the case of hand-held or portable equipment,irrespective of its position.Annex H of this standard is applicable to thermal-link packaged assemblies where thethermal-link(s) has already been approved to this standard but packaged in a metallic or non-metallic housing and provided with terminals/wiring leads.This standard is applicable to thermal-links with a rated voltage not exceeding 690 V AC orDC and a rated current not exceeding 63 A.The objectives of this standard are:a) to establish uniform requirements for thermal-links,b) to define methods of test,c) to provide useful information for the application of thermal-links in equipment.This standard is not applicable to thermal-links used under extreme conditions such ascorrosive or explosive atmospheres.This standard is not applicable to thermal-links to be used in circuits on a.c. with a frequencylower than 45 Hz or higher than 62 Hz.