IEEE C37.20.4-1996
Use Standard for Indoor AC Switches (1 kV-38 kV) for Use in Metal-Enclosed Switchgear
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About This Item
C37.20.4-1996 is a technical standard for indoor AC switches rated from 1 kV to 38 kV for use in metal-enclosed switchgear. It addresses requirements that help define how these devices are designed, rated, and evaluated in power, energy, and industrial applications. For engineers, buyers, and specifiers, the standard provides a clear reference point for comparing equipment and supporting safer, more consistent switchgear selection.
C37.20.4-1996 overview
This standard focuses on indoor alternating-current switches intended for metal-enclosed switchgear assemblies. C37.20.4-1996 is relevant where medium-voltage switching equipment must operate within defined electrical limits and physical enclosure conditions. The document is commonly used to guide product requirements, construction expectations, and performance considerations for switch arrangements in controlled indoor environments. Its scope makes it useful when aligning equipment design with established industry practice.
Typical use cases
C37.20.4-1996 is typically used when specifying indoor switchgear for utility substations, plant distribution systems, and other medium-voltage power installations. It may apply to switching equipment used in feeders, distribution panels, and industrial power centers where metal-enclosed construction is required. The standard is also relevant during procurement and engineering review when comparing products for compatibility, voltage range, and expected operating conditions within 1 kV to 38 kV systems.
Why this standard matters
Using C37.20.4-1996 can help reduce ambiguity in design and purchasing decisions for indoor AC switchgear. It supports more consistent evaluation of ratings, construction, and performance expectations, which is important for safety and reliability in energized power systems. Because the standard is superseded, it may still be needed for legacy equipment references, documentation review, or maintenance planning where older switchgear remains in service. C37.20.4-1996 also helps keep technical communication aligned across manufacturers and end users.
- Indoor AC switches
- 1 kV to 38 kV rating range
- Metal-enclosed switchgear applications
- Medium-voltage power systems
- Legacy compliance reference
- Publication Date: 1996
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: C37.20.4 (2013)
- Previous Version: C37.20.4 (2001)
- This Version: C37.20.4 (1996)
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