These requirements cover connectors and switches for use with burglar-alarm systems in mercantile premises@ mercantile safes and vaults@ bank safes and vaults@ and residences. They are intended to be used in circuits of limited energy@ for these applications@ in accordance with Article 725 of the National Electrical Code. NFPA 70. The connectors and switches covered by these requirements include insulated contact springs and mating brackets; magnetically actuated and mercury switches; heat@ smoke@ and vibration detectors; floor mats; floor traps@ special contacts for safes and vaults; flexible connectors; foil connectors; and shunting devices. Switches covered by these requirements are intended for use in protective circuits to supervise doors@ windows@ hatches@ vents@ trap doors@ and the like@ to initiate an alarm signal when actuated. Connectors covered by these requirements are intended to join various parts of protective circuit components and wiring. The products covered by these requirements may require an external source of electrical energy not integral with the product. The products covered by these requirements are intended to be installed in accordance with the Standard for Installation and Classification of Burglar and Holdup Alarm Systems@ UL 681@ or with the Standard for Installation and Classification of Residential Burglar Alarm Systems@ UL 1641. A product that contains features@ characteristics@ components@ materials@ or systems new or different from those covered by the requirements in this Standard@ and that involves a risk of fire@ electric shock@ or injury to persons shall be evaluated using the appropriate additional component and end-product requirements to determine that the level of safety as originally anticipated by the intent of this Standard is maintained. A product whose features@ characteristics@ components@ materials@ or systems conflict with specific requirements or provisions of this Standard shall not be judged to comply with this Standard. Where appropriate@ revision of requirements shall be proposed and adopted in conformance with the methods employed for development@ revision@ and implementation of this Standard.
UL 634 BULLETIN-2012 history
1970UL 634-2020 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems
2016UL 634 CRD-2016 Standard for Connectors and Switches for Use with Burglar-Alarm Systems (Certification Requirement Decision, 5/12/2016)
2016UL 634 BULLETIN-2016 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (COMMENTS DUE: November 11@ 2016)
2014UL 634 BULLETIN-2014 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (COMMENTS DUE: December 1@ 2014)
2013UL 634 CRD-2013 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems - Section/Paragraph Reference: Sections 19.2 and 64 Subject: Operating Gap - All Switches (Edition 9: October 12, 2007)
2013UL 634 BULLETIN-2013 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (COMMENTS DUE: August 12@ 2013)
2012UL 634 BULLETIN-2012 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (COMMENTS DUE: April 09@ 2012)
2007UL 634 BULLETIN-2007 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (COMMENTS DUE: May 14@ 2007)
2007UL 634-2007 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems Ninth Edition
2006UL 634 BULLETINS-2006 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (10/27/2006 (62p); 07/24/2006 (62p); 03/03/2006 (50p))
2004UL 634 BULLETIN-2004 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems
2000UL 634-2000 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (Eighth Edition)
1995UL 634-1995 UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems (Seventh Edition; Reprint with Revisions Through and Including March 08@ 1999)
1990UL 634-1990 Connectors and switches for use with burglar-alarm systems