Historical
NEMA ANSI C37.50:1989 (R2000)
Low-Voltage Ac Power Circuit Breakers Used In Enclosures - Test Procedures
Covers the test procedures for enclosed low-voltage ac power circuit breakers as follows: stationary or drawout circuit breakers of two- or three-pole construction; unfused or fused circuit breakers; and manually operated or power-operated circuit breakers with or without electromechanical or solid-state trip devices.
CONTENT PROVIDER
NEMA: National Electrical Manufacturers Association [nema]
NEMA: National Electrical Manufacturers Association [nema]