The Megger MOM200A Micro-ohmmeter is a compact, rugged solution for measuring contact resistance in high-voltage circuit breakers, disconnecting switches, and busbar joints, ensuring reliable connections in critical power systems. Capable of delivering up to 200 A DC, it measures resistances from 0 to 19.99 mΩ with ±1% accuracy, making it perfect for identifying poor connections that could lead to power loss or overheating. Weighing just 14 kg, its portability is enhanced by a sturdy transport case, while included 5 m current and sensing cables enable immediate testing.
The MOM200A shines in extended testing at 100 A, supported by thermal protection for safe operation, and its straightforward pushbutton interface simplifies measurements in the field. A current shunt output (10 mV/100 A) allows integration with external voltmeters for busbar joint testing, offering flexibility across applications. Designed for high-voltage substations and industrial environments, it operates reliably from 0°C to 50°C. Optional 10 m or 15 m cable sets and a calibration shunt further extend its utility, making the MOM200A an essential tool for engineers focused on maintaining system integrity and preventing failures in power infrastructure.
