PC37.011/D13 is a technical standard for voltage circuit breakers, providing guidance on requirements that affect design, ratings, and performance in power system applications. As a revision of C37.011-1979, it helps define a more consistent basis for evaluating circuit breaker characteristics used in energy and industrial environments. For engineering teams, procurement staff, and compliance review, this inactive document remains useful as a reference point for legacy equipment and historical specification comparisons.

About PC37.011/D13

PC37.011/D13 addresses voltage circuit breakers within the context of power, energy, and industrial applications. The document is tied to the technical requirements that typically shape how such breakers are specified, assessed, and compared, especially where electrical switching performance and related ratings matter. As a revision of an earlier C37.011 edition, it is relevant when working with legacy designs, archived specifications, or older procurement records. The standard number PC37.011 helps identify the document family and its technical scope.

Where is PC37.011/D13 used?

This standard is most relevant in settings where voltage circuit breakers are selected, documented, or evaluated for electrical distribution and equipment protection. It may be used by utilities, industrial facilities, consulting engineers, and maintenance teams working with switchgear, breaker assemblies, and related power apparatus. PC37.011/D13 is especially useful when reviewing older system designs or matching replacement equipment to historical requirements. The document supports a common reference point for technical communication across design, testing, and procurement workflows.

Importance in practice

In practice, PC37.011/D13 helps reduce ambiguity around voltage circuit breaker requirements by giving engineers and buyers a shared technical reference. That can improve consistency in design decisions, acceptance checks, and specification writing, particularly when dealing with legacy systems. Using a defined standard may also support safer equipment selection and clearer performance expectations during testing or procurement. Because this edition is inactive, it is most valuable for comparison, traceability, and understanding older compliance bases rather than current adoption.

• Voltage circuit breaker requirements
• Revision of C37.011-1979
• Legacy reference for power systems
• Design, testing, and procurement context
• Inactive technical document