scope:

This part of IEC 61810 is a generic specification. It applies to electromechanical non-specified time all-or-nothing relays in a new condition only, which are used in many fields of electrotechnics (e.g. telecommunications, general industry equipment, etc.). Discrimination from other types of relays and related switching devices is given in annex C. Nevertheless, parts of this standard may be used also for other types of relays, such as static all-or-nothing relays. This standard states basic requirements for electromechanical non-specified time all-or-nothing relays. It comprises indication and explanations necessary for the understanding of the relevant basic characteristics of such relays. This standard contains standard values that reduce the variety of variants and facilitate the comparison of types.