IEEE C37.17-2012

C37.17-2012 is a technical standard for voltage (1000 V and below) AC and general purpose (1500 V and below) DC power circuit breakers. It addresses the requirements and terminology used for this class of switching equipment, helping define expectations for design, rating, and application in power, energy, and industrial systems. For engineers, purchasers, and specifiers, it supports more consistent evaluation of circuit breaker products and their fit for low-voltage AC and DC duty.

C37.17-2012 overview

This standard provides a focused framework for power circuit breakers intended for AC systems at 1000 V and below, as well as general purpose DC systems at 1500 V and below. C37.17-2012 is relevant where equipment must interrupt, carry, and withstand electrical duty within defined voltage ranges. It is typically used alongside other engineering documents to support product selection, technical comparison, and compliance review for circuit breaker applications in power and industrial environments.

Typical use cases

C37.17-2012 is commonly used when specifying low-voltage AC or DC power circuit breakers for switchgear, distribution equipment, and industrial power systems. It may guide selection for facilities that rely on controlled interruption and protection of feeders, buses, and connected loads. The standard is also useful in procurement and engineering workflows where breaker performance, application limits, and documentation need to be compared across products for energy infrastructure and process equipment.

Why this standard matters

In practice, C37.17-2012 helps reduce uncertainty in design and procurement by giving a common technical reference for circuit breaker expectations. That can support safer application, clearer testing criteria, and more consistent product evaluation across suppliers. For teams working with electrical protection equipment, the standard may improve coordination between design intent and installed performance, especially where voltage ratings, switching duty, and compliance documentation need to be checked carefully.

• Low-voltage AC power circuit breakers
• General purpose DC breaker applications
• Design and rating reference for switchgear
• Technical comparison for procurement and compliance