BS EN 60947-5-1:1992
Specification for low-voltage switchgear and controlgear. Control circuit devices and switching elements, Electromechanical control circuit devices
Characteristics, electrical and mechanical requirements and functional requirements for control circuit devices and switching elements for controlling, signalling, interlocking of switchgear and controlgear having a rated voltage of 1000 V a.c. (up to 1000 Hz) or 600 V d.c. Relays covered by IEC 60255 or automatic electrical control devices for household and similar purposes are excluded from this standard.
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