UL 943-2006
Ground-fault circuit-interrupters

Standard No.

UL 943-2006

Release Date

2006

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2016-07

Replace By

UL 943 BULLETIN-2007

Latest

UL 943 TGD-2018

Scope

This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, the Canadian Electrical Code, C22.1 (CEC), and Electrical Installations (Use), NOM-001-SEDE. These devices are intended for use on alternating current (AC) circuits of 120 V, 208Y/120 V, 120/240 V, 127 V, or 220Y/127 V, 60 Hz circuits.Note: In Canada, the text "intended for protection of personnel" is excluded. These requirements do not cover ground-fault circuit-interrupters intended for use in circuits served by a transformer having windings wholly insulated from each other. This Standard applies to all Class A ground-fault circuit-interrupters. These Class A GFCIs are permitted to be integrated into other devices, in which case, besides complying with this Standard, these devices are to comply with the corresponding applicable Standard for the device in question. This Standard includes minimum requirements for the function, construction, performance, and markings of ground-fault circuit-interrupters included in the scope. This Standard is intended to cover only Class A GFCI devices.

UL 943-2006 history

• 2018 UL 943 TGD-2018 UL Standard for Safety Ground-Fault Circuit-Interrupters - Subject: UL 943 “Visual Indicator” Requirement (Edition 5: May 17@ 2016)
• 1970 UL 943-2018 Ground-fault circuit-interrupters
• 2017 UL 943 BULLETIN-2017 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: February 2@ 2017)
• 2016 UL 943 BULLETIN-2016 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: September 2@ 2016)
• 2016 UL 943-2016 UL Standard for Safety Ground-Fault Circuit-Interrupters (Fifth Edition; Reprint with revisions through and including February 23@ 2018)
• 2015 UL 943 BULLETIN-2015 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: July 20@ 2015)
• 2014 UL 943 BULLETIN-2014 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: October 29@ 2014)
• 2012 UL 943 BULLETIN-2012 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: March 26@ 2012)
• 2011 UL 943 BULLETIN-2011 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: March 08@ 2011)
• 2010 UL 943 BULLETIN-2010 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: December 27@ 2010)
• 2009 UL 943 BULLETIN-2009 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: October 26@ 2009)
• 2008 UL 943 BULLETIN-2008 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: November 17@ 2008)
• 2007 UL 943 BULLETIN-2007 UL Standard for Safety Ground-Fault Circuit-Interrupters (COMMENTS DUE: April 30@ 2007)
• 2006 UL 943-2006 Ground-fault circuit-interrupters
• 2005 UL 943 BULLETIN-2005 UL Standard for Safety Ground-Fault Circuit-Interrupters
• 2004 UL 943 BULLETINS-2004 UL Standard for Safety Ground-Fault Circuit-Interrupters (12/07/2004 (8p); 05/21/2004 (2p); 05/07/2004 (10p))
• 2003 UL 943 BULLETINS-2003 Ground-fault circuit-interrupters
• 2003 UL 943 BULLETIN-2003 UL Standard for Safety Ground-Fault Circuit-Interrupters
• 2002 UL 943 BULLETINS-2002 Ground-fault circuit-interrupters
• 2001 UL 943 BULLETINS-2001 UL Standard for Safety Ground-Fault Circuit-Interrupters (11/02/2001 (34p); 11/01/2001 (14p); 09/01/2001 (10p); 07/25/2001 (2p); 06/08/2001 (40p))
• 1993 UL 943-1993 Ground-fault circuit-interrupters