Underwriters' Laboratories of Canada

SPEAKERS FOR FIRE ALARM AND SIGNALING SYSTEMS, INCLUDING ACCESSORIES - Fourth Edition
 N CAN/ULC-S541:2016

Annotation

These requirements apply to speakers, rated at 300 V or less, for fire alarm and signaling systems and intended for indoor and/or outdoor installation:

a) In Canada, in accordance with CSA C22.1, Canadian Electrical Code, Part I, Safety Standard for Electrical Installations; and with CAN/ULC S524, Standard Installation of Fire Alarm Systems. Note: Refer to CAN/ULC-S525, Standard for Audible Signaling Devices for Fire Alarm Systems, Including Accessories, for requirements pertaining to audible signaling devices.

b) In the United States, in accordance with the National Electrical Code, NFPA 70, and the National Fire Alarm and Signaling Code, NFPA 72.

These requirements apply to speakers for use in ordinary (non-hazardous or non-corrosive) indoor locations and outdoor locations.

This Standard also covers protective covers and other accessories used with speakers. 1.4 Speakers for use in hazardous or corrosive locations shall comply with the requirements of this Standard and the applicable requirements

a) In Canada, CSA C22.1, Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, with respect to the location hazard;

b) In the United States, the National Electrical Code, NFPA 70. Note: In the United States, general signaling appliances are covered by UL 464A.

Each product or device referred to as a speaker in this Standard is a speaker assembly suitable for separate installation as a component of a fire alarm system.