Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification

IEC？61020-1:2019 specifies the terminology, symbols, test methods and other necessary information to provide consistency in detail specifications for electromechanical switches.

This document relates to electromechanical switches intended for use in electrical and electronic appliances. Switches covered by this document:

a) are devices which open, close, or change the connection of a circuit by the mechanical motion of conducting parts (contacts);

b) have a maximum rated voltage of 480 V;

c) have a maximum rated current of 63 A.

This third edition cancels and replaces the second edition published in 2009.

This edition includes the following significant technical changes with respect to the previous edition:

a) In accordance with the ISO/IEC Directives, Part？2:2016, Clause 2 General has been replaced by two new clauses: Clause 2 Normative references and Clause 3 Terms, definitions, units and symbols.

2.4 Preferred values and 2.5 Marking have been moved to Clauses 5 and 6. In addition, 6.2 Markings on packaging has been added.

b) Clause 3 Quality assurance procedures and Annex A have been deleted.

c) 4.3.6.3 Returning force has been added.

d) 4.3.6.4 Travel (movement of th