CSA - CAN/CSA-C22.2 NO. 4-M89
|Publication Date:||1 September 1989|
This Standard applies to enclosed airbreak switches for use in nonhazardous locations, in accordance with the Ruleosf the Canadian Electrical Code, Part I, that have all current-carrying parts enclosed anda re manually operable by'means of external handles, and with maximum ratings o4f0 00 A or less at 600 V or less.
*Effective Date--July 1, 1994
This Standard does not apply to
(a) snap and tumbler switches:
(b) circuit breakers, moulded case switches, and magnetic only circuit interrupters;
(c) switches having features (other than fuses) intended for the starting and protection of motors;
(d) switches with automatic trips affording protection for equipment where no circuit breakerosr fuses are used;
(e) switches that have enclosed with them fuse terminals fomro re than four branch circuits;*
(f) devices in which the pulling of fuses or the removaolf a pull-out member is designed to accomplish a switching operation:
(g) door-operated switches.
*A meter loop i s not counted as a branch circuit.