UL 60947-4-1A BULLETIN-2009
UL Standard for Safety Low-Voltage Switchgear and Controlgear - Part 4-1: Contactors and Motor-Starters - Electromechanical Contactors and Motor-Starters (COMMENTS DUE: March 30@ 2009)

Standard No.

UL 60947-4-1A BULLETIN-2009

Release Date

2009

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2010-11

Replace By

UL 60947-4-1A BULLETIN-2010

Latest

UL 60947-4-1A BULLETIN-2013

Scope

This part of IEC 60947 applies to the types of equipment listed in 1.1 and 1.2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore@ suitable short-circuit protection (see 9.3.4) shall form part of the installation but not necessarily of the contactor or the starter.In this context@ this standard gives requirements for:?C contactors associated with overload and/or short-circuit protective devices;?C starters associated with separate short-circuit protective devices and/or with separate shortcircuit and integrated overload protective devices;?C contactors or starters combined@ under specified conditions@ with their own short-circuit protective devices. Such combinations@ e.g. combination starters (see 3.2.7) or protected starters (see 3.2.8) are rated as units.Circuit-breakers and fuse-combination units used as short-circuit protective devices in combination starters and in protected starters shall comply with the requirements of IEC 60947-2 and IEC 60947-3@ as the case may be.

UL 60947-4-1A BULLETIN-2009 history

• 2013 UL 60947-4-1A BULLETIN-2013 UL Standard for Safety Low-Voltage Switchgear and Controlgear Part 4-1: Contactors and Motor-Starters Electromechanical Contactors and Motor-Starters (COMMENTS DUE: June 18@ 2013)
• 2012 UL 60947-4-1A BULLETIN-2012 UL Standard for Safety Low-Voltage Switchgear and Controlgear Part 4-1: Contactors and Motor-Starters Electromechanical Contactors and Motor-Starters
• 2010 UL 60947-4-1A BULLETIN-2010 UL Standard for Safety Low-Voltage Switchgear and Controlgear Part 4-1: Contactors and Motor-Starters Electromechanical Contactors and Motor-Starters
• 2009 UL 60947-4-1A BULLETIN-2009 UL Standard for Safety Low-Voltage Switchgear and Controlgear - Part 4-1: Contactors and Motor-Starters - Electromechanical Contactors and Motor-Starters (COMMENTS DUE: March 30@ 2009)
• 2008 UL 60947-4-1A BULLETIN-2008
• 2007 UL 60947-4-1A CRD-2007 UL Standard for Safety Low-Voltage Switchgear and Controlgear - Part 4-1: Contactors and Motor-Starters - Electromechanical Contactors and Motor-Starters - Section / Paragraph Reference: Footnote f of Table C.4.4DV.1 (Edition 2: January 26@ 2007)
• 2007 UL 60947-4-1A BULLETIN-2007 UL Standard for Safety for Low-Voltage Switchgear and Controlgear Part 4-1: Contactors and Motor-Starters Electromechanical Contactors and Motor-Starters
• 2007 UL 60947-4-1A (ND)-2007 National Differences For UL 60947-4-1A Low-Voltage Switchgear and Controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters (Second Edition; Reprint with Revisions Through and Including April 29@ 2011)
• 2007 UL 60947-4-1A-2007 UL Standard for Safety for Low-Voltage Switchgear and Controlgear Part 4-1: Contactors and Motor-Starters Electromechanical Contactors and Motor-Starters Second Edition