Solid-State Circuit Breakers

CSA Group
Standards Development Organisation:
Canadian Standards Association (operating as CSA Group)
Working Program:
View the CSA work program
Designation Number:
C22.2 No. 354
Standard Type:
National Standard of Canada - Domestic
Standard Development Activity:
New Standard
ICS code(s):
29.120.50
Status:
Open for SDO comment
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

Note: The title and scope of this Notice of Intent (originally published on May 30, 2023) were updated by the responsible SDO on October 22, 2024.

 

Note: As requested by the responsible SDO, this NOI being reissued as the standard was in the initial stages of development for more than 12 months. An additional comment period of April 9 to April 30, 2024 (originally published on May 30, 2023).

1.1  

This Standard covers requirements for solid-state circuit breakers (SSCB) and solid-state hybrid circuit breakers (SSHCB) utilizing semiconductor switching technology intended for applications where overcurrent protection complies with CSA C22.1, the Canadian Electrical Code, Part I. 

 

1.2

This Standard applies to:

  1. Solid-state circuit breakers (SSCB) and switches (SSCS) with air gap isolation; and 
  2. Solid-state hybrid circuit breakers and (SSHCB) switches (SSHCS)

 

1.3

This Standard applies to both single and multi-pole devices with ratings up to 1000Vac and 1500Vdc. 

 

1.4

The general requirements for molded-case circuit breaker, molded-case switches and circuit-breaker enclosures are contained in CSA C22.2 No. 5. This Standard covers additional construction and performance requirements for solid-state Circuit Breakers and solid-state Switches.  

 

1.5

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.

 

Project need:

To support innovation in the field of Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures by providing requirements for the construction/installation/use of Solid-State Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures in the Canadian context. This proposed New Standard is being developed at the request of breaker suppliers, certifications bodies, and the Canadian industries. It will provide the industry with latest requirements for digital circuit breakers and introduce Solid-State Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures in the Canadian context.

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.