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BS EN 60947-5-1:2017

Current
Current

The latest, up-to-date edition.

Low-voltage switchgear and controlgear Control circuit devices and switching elements. Electromechanical control circuit devices
Published date

12-21-2017

This part of IEC60947 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 1000V a.c. (at a frequency not exceeding 1000Hz) or 600V d.c. However, for operational voltages below 100V a.c. or d.c., see 4.3.2.2. This standard applies to specific types of control circuit devices such as: manual control switches, for example push-buttons, rotary switches, foot switches, etc.; electromagnetically operated control switches, either time-delayed or instantaneous, for example contactor relays; pilot switches, for example pressure switches, temperature sensitive switches (thermostats), programmers, etc.; position switches, for example control switches operated by part of a machine or mechanism; associated control circuit equipment, for example indicator lights, etc. NOTE1 A control circuit device includes (a) control switch(es) and associated devices such as (an) indicator light(s). NOTE2 A control switch includes (a) switching element(s) and an actuating system. NOTE3 A switching element can be a contact element or a semiconductor element. It also applies to specific types of switching elements associated with other devices (whose main circuits are covered by other standards) such as: auxiliary contacts of a switching device (e.g. contactor, circuit breaker. etc.) which are not dedicated exclusively for use with the coil of that device; interlocking contacts of enclosure doors; control circuit contacts of rotary switches; control circuit contacts of overload relays. Contactor relays also comply with the requirements and tests of IEC60947‑4‑1 except for the utilization category which comply with this standard. This standard does not include the relays covered in IEC60255 or in the IEC61810 series, nor automatic electrical control devices for household and similar purposes. The colour requirements of indicator lights, push-buttons, etc., are found in IEC60073 and also in CIES0004/E‑2001 from the Commission of Illumination (CIE). The object of this standard is to state: the characteristics of control circuit devices; the electrical and mechanical requirements with respect to: the various duties to be performed; the significance of the rated characteristics and of the markings; the tests to verify the rated characteristics; the functional requirements to be satisfied by the control circuit devices with respect to: environmental conditions, including those of enclosed equipment; dielectric properties; terminals.

Committee
PEL/121/1
DevelopmentNote
Supersedes 95/214408 DC and 98/203673 DC. (06/2002) Supersedes 01/208942 DC. (07/2004) Supersedes 98/200548 DC. (05/2005) Supersedes 06/30157864 DC. (10/2009) Supersedes 15/30291884 DC. (12/2017)
DocumentType
Standard
PublisherName
British Standards Institution
Status
Current
Supersedes

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