This item is an excellent condition used Multi-Amp MS-1A Overload Relay and Circuit Breaker Test. Calibrated to NIST traceable standards on March 20, 2026. Includes user manual, large red/black test leads with clamps, red/black banana test leads, fixed power cable, traceable certificate of calibration, and 180 day warranty. All pictures are of the actual unit and accessories.
This item comes with a 6 Month (180 day) warranty. Every pre-owned unit we offer goes through meticulous inspection and NIST calibration to guarantee its reliability and durability.
Item is in stock and located in Texas.
International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. For more information of clarification, please ask.
Will ship worldwide. We make our best efforts to get you the best shipping prices. Contact us for other international rates and we will be pleased to give you a quote. We accept VISA / Mastercard. Paypal is also accepted. Sales to within Canada are subject to 5% GST. Ontario sales subject to 13% HST.
Contact us for Calibration options, including ISO 17025 Accredited Calibration for your Test Equipment! Visit stratatek.com/calibration for more details.
Multi-Amp MS-1A Overload Relay and Circuit Breaker Test Set NIST Calibrated
The Multi-Amp MS-1A Overload Relay and Circuit Breaker Test Set consists of a continuously variable autotransformer which supplies an output transformer, thus providing stepless control of the output current.
Integral metering, timing, and control circuitry are included in the MS1A.Rating: 0.6 kVA
Input: 120 volts, 60 hertz, single phase
Output: Continuously adjustable in four ranges to meet a variety of test circuit impedances:
0 - 140 volts at 4.5 amperes
0 - 24 volts at 25 amperes
0 - 6 volts at 100 amperes
0 - 3 volts at 200 amperes
Ammeter: A large, easily read instrument with 3 inch scale:
Scales: 5 / 10 / 25
Ranges (switch selected): 0-2.5 / 5 / 10 / 25 / 50 / 100 / 250 / 500 amperes
Timer: Measures elapsed time of the test from 0.1 second to 9999.9 seconds
Housing: Molded plastic, high strength suitcase type enclosure with easy-to-carry handle. Storage space is provided for test leads