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.
Light Weight, Portable Primary Injection Test Instrument
Overcurrent Relay Testing
Ground Fault Performance Testing for NEC 230.95
Circuit Breaker Testing
FEATURES AND BENEFITS
– Rugged and lightweight: Unit weighs only 33 lb (15 kg) and is tough enough to withstand daily field or plant use.
– Digital memory ammeter: High accuracy, direct-reading instrument has read-and-hold memory for measurement of shortduration currents. Ideal for testing ground fault devices, overcurrent relays and molded-case circuit breakers.
– Digital, multirange timer: Crystal-controlled, high-accuracy instrument with autoranging measures operating time to 1 millisecond.
– High-current output: Provides instantaneous currents up to 750 amperes through a 125 ampere breaker in a small 33lb (15kg) package.
SPECIFICATIONS
Input: Input Voltage (specify one): 120 V OR 240 V, 50/60 Hz, 1φ
Output
Output Ranges: The output is continuously adjustable in four ranges to accommodate a variety of test-circuit impedances:
0 to 5 A at 120 V max.
0 to 25 A at 24 V max.
0 to 120 A at 6 V max.
0 to 240 A at 3 V max.
Dimensions: 18 W X 9.5H X 13.5 D in. (457.2 W x 241.3 H x 342.9 mm)
Weight: 33 lb (15 kg)
Included Accessories
Test Lead, red, 200cm
Test Lead, black, 200cm
Alligator clip, red
Alligator clip, black
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