The Megger MOM600A Micro-ohmmeter is a powerful, field-ready tool designed to measure contact resistance in high-voltage circuit breakers, disconnecting switches, knife-contact fuses, and busbar joints, preventing overheating and system failures. With a robust output of up to 600 A DC, it accurately measures resistances from 0 to 1999 µΩ with ±1% accuracy, addressing critical issues in heavily loaded distribution networks. Weighing 24.7 kg (230 V) or 25 kg (115 V), its compact design is paired with a sturdy transport case and includes 5 m current and sensing cables for immediate use.
The intuitive pushbutton interface simplifies resistance measurements, while a current shunt output (10 mV/100 A) enables external voltmeter integration for busbar joint testing, offering versatility across applications. Built to withstand harsh conditions, it operates reliably from 0°C to 50°C (115 V) or 40°C (230 V), with safety ensured by miniature circuit breakers and thermal cut-outs. Ideal for high-voltage substations and industrial settings, the MOM600A supports extended testing at lower currents (e.g., 100 A continuously), making it an essential asset for engineers focused on detecting faults early, ensuring system reliability, and maintaining the integrity of critical power infrastructure.
