• light weight, portable primary injection test instrument
• overcurrent relay testing
• ground fault performance testing for nec 230.95
• circuit breaker testing

the megger ms-2a test set is used around the world by several thousand utility companies, industrial plants and electrical service organizations.

model ms-2a is a self-contained test set that incorporates a variable high-current output and appropriate control circuitry and instrumentation for testing thermal, magnetic or solid-state motor overload relays, molded-case circuit breakers, ground-fault trip devices and overcurrent relays.