IEEE C37.13-1990

C37.13-1990 is a technical standard for voltage AC power circuit breakers used in enclosures, providing guidance for equipment intended to operate within protected installations in power, energy, and industry applications. It addresses the design and performance expectations that help support safe switching, reliable interruption, and consistent equipment behavior. For engineers, purchasers, and specifiers, this document is relevant when evaluating breaker requirements for enclosed assemblies where controlled electrical performance matters.

C37.13-1990 overview

This standard defines requirements for voltage AC power circuit breakers used in enclosures, with attention to how the breaker is expected to function as part of a complete enclosed apparatus. C37.13-1990 helps frame technical expectations around construction, ratings, and operational performance so that equipment can be compared on a common basis. In practice, it supports specification work for enclosed breaker assemblies where electrical integrity, coordination, and dependable interruption characteristics are important.

Typical use cases

C37.13-1990 is typically referenced for enclosed power circuit breaker applications in industrial and utility-related electrical systems. It may apply to switchgear, distribution equipment, control rooms, and other installations where AC breakers are mounted within protective enclosures. In these settings, the standard helps guide selection and evaluation of breakers used for power distribution, feeder protection, and system isolation. It is especially useful when equipment must fit a defined enclosure arrangement and meet consistent technical expectations.

Why this standard matters

In power and energy applications, standardized requirements reduce uncertainty during design, procurement, and testing. C37.13-1990 matters because it helps align breaker performance with enclosure-based installation needs, supporting safer operation and more consistent equipment comparison. Using a recognized specification can also help reduce compatibility issues, clarify acceptance criteria, and improve confidence in the rated behavior of the breaker assembly. That makes it valuable for compliance-driven projects and long-term equipment planning.

• Voltage AC power circuit breakers
• Enclosed installation requirements
• Performance and rating expectations
• Power, energy, and industrial applications
• Equipment specification and evaluation