CSA C22.2 No. 354:25

1 Scope 1.1 This Standard applies to solid-state circuit breakers (SSCBs) and solid-state hybrid circuit breakers (SSHCBs) using semiconductor switching technology intended for applications where overcurrent protection complies with CSA C22.1. 1.2 This Standard applies to a) solid-state circuit breakers (SSCBs) and switches (SSCSs) with air gap isolation; and b) solid-state hybrid circuit breakers (SSHCBs) and hybrid switches (SSHCSs). 1.3 This Standard applies to both single and multi-pole devices with ratings up to 1000 Vac and 1500 Vdc. 1.4 Clauses 4to 22of this standard apply to solid-state circuit breakers and solid-state hybrid circuit breakers. Clauses 23to 34of this standard apply to solid-state switches and solid-state hybrid circuit switches. 1.5 The general requirements for molded case circuit breakers, molded case switches, and circuit breaker enclosures can be found in CSA C22.2 No. 5. This Standard applies to construction and performance requirements for solid-state circuit breakers and solid-state switches. 1.6 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.