Switchgear breakdowns are frequently caused by excessively high contact resistance at breakpoints and busbar joints. Moreover, overheating risks are becoming more serious because today’s distribution networks have to carry heavier loads. Checking contact resistances at regular intervals detect faults before they cause overheating. And here, an ounce of prevention is worth a pound of cure. Micro-ohmmeters are used to measure contact resistances in high-voltage breakers, disconnecting switches (isolators), knife-contact fuses, bus joints, line joints, etc. The MOM600A? is in a class apart on world markets. ?Designed for use from the Arctic to the tropics, this rugged, compact micro-ohmmeter is ideal for fieldwork.