MEGGER MS-2A – Circuit Breaker and Overcurrent Relay Test Set

Megger MS-2A – Circuit Breaker and Overcurrent Relay Test Set

The Megger MS-2A is a portable primary injection test set designed for testing the time-delay characteristics of overcurrent relays, motor overload relays, and molded-case circuit breakers rated up to 125 amperes. It provides high-current outputs up to 750 amperes for short durations, suitable for testing instantaneous trip elements. The unit features a digital memory ammeter with read-and-hold memory for measuring short-duration currents and a digital, multirange timer with crystal-controlled accuracy, measuring operating time to 1 millisecond. Its rugged and lightweight design, weighing only 33 lb (15 kg), makes it ideal for field or plant use.