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Megger / Multi-Amp MS-2 Circuit Breaker Tester
The Megger / Multi-Amp MS-2 circuit breaker terster 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, and ground-fault trip devices.
Megger MS-2 Features:
- Portable High Current Test Set
- Digital Memory Ammeter: High-accuracy, direct-reading instrument with "read-and-hold" memory for measurement of short duration currents
- Digital, Multi-Range Timer: Crystal-controlled, high-accuracy instrument with autoranging measures operating time to one millisecond
- High-Output Current: Will provide 750 amperes through a 125 ampere breaker
- Rugged and Lightweight: Weighs only 33 lbs. (15kg) and is tough enough to withstand daily field or plant use
- Solid -State Output Initiate Circuit: Completely solid-state circuit eliminates need for contact maintenance
Megger MS-2 Specifications:
| Input (specify one) |
120 volts OR 240 volts, 50/60 Hertz single-phase |
| Output Ranges |
0 to 120 volts at 5 amperes |
| 0 to 24 volts at 25 amperes |
| 0 to 6 volts at 120 amperes |
| 0 to 3 volts at 240 amperes |
| Output Capacity |
The test set is capable of testing the time delay characteristics of devices rated up to 125 amperes using a test current of three times their rating (375 amperes). Additionally, to perform an instantaneous trip test, it will provide 750 amperes through a typical, 125-ampere, molded-case circuit breaker connected with the test leads provided with the test set |
| Ammeter |
Display: |
3½-digit |
| Ranges (switch-selected): |
0 to 1.999/19.99/199.9/750 amperes |
| Timer |
Display: |
5-digit |
| Ranges (switch-selected): |
| A. 0 to 99.999 seconds |
| B. 0 to 999.99 seconds |
| C. 0 to 99999 cycles |
| Timer Control Circuit |
A. Current Actuated |
| B. Normally Closed |
| C. Normally Open |
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