Historical
NEMA ANSI C37.51:2003 (R2010)
For switchgear - Metal-enclosed low-voltage ac power circuit breaker switchgear assemblies - Conformance test procedures
Applies to all metal-enclosed low voltage ac power circuit breaker switchgear assemblies designed, tested and manufactured in accordance with ANSI/IEEE C37.20.1-2002. Errata published February 2011.
Content Provider
NEMA: National Electrical Manufacturers Association [nema]