IEEE C37.13a-2012
Voltage AC Power Circuit Breakers Used in Enclosures Amendment 1: Increase of Voltages to 1000 V AC and Below
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About This Item
C37.13a-2012 is a technical standard for voltage AC power circuit breakers used in enclosures, with Amendment 1 expanding the addressed voltage range to 1000 V AC and below. It is relevant to equipment in power, energy, and industrial applications where enclosed breakers must meet defined design and performance expectations. For engineers, specifiers, and buyers, this standard helps frame consistent requirements for breaker ratings, construction, and application suitability.
C37.13a-2012 overview
This standard builds on the C37.13 family by focusing on AC power circuit breakers intended for enclosed installations. The amendment specifically increases the covered voltages to include systems up to 1000 V AC and below, which broadens its technical context beyond lower-voltage applications. C37.13a-2012 is useful when evaluating breaker design, enclosure compatibility, and the requirements that support reliable operation in power distribution and industrial control environments.
Typical use cases
C37.13a-2012 is commonly relevant when specifying or reviewing enclosed AC power circuit breakers for switchgear, distribution assemblies, and industrial power equipment operating at 1000 V AC or below. It may be used during engineering review, procurement comparison, and equipment acceptance for systems where breaker performance and enclosure-based installation matter. The standard also supports projects that need a clear reference for enclosed breaker application within electrical infrastructure.
Why this standard matters
Using C37.13a-2012 can help align design and procurement decisions with an established technical reference for enclosed AC power circuit breakers. That matters because voltage coverage, breaker application, and enclosure conditions all affect safety, reliability, and consistency across equipment selections. For compliance and testing activities, the standard provides a stable basis for comparing products and reducing ambiguity when defining acceptable breaker characteristics for service.
- Enclosed AC power circuit breakers
- Voltage applications to 1000 V AC and below
- Power and industrial distribution equipment
- Design and procurement reference
- Superseded technical document
- Publication Date: 2012
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
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