Major Tech Mt550 Digital Insulation Resistance Tester:

Ensure electrical safety and compliance with the Major Tech MT550 Digital Insulation Tester, featuring three insulation test ranges up to 1000V, a live circuit warning, an automatic discharge function, and a rugged CAT IV safety rating.

Designed for professional electricians, electrical contractors, and industrial maintenance technicians, the Major Tech MT550 is a heavy-duty, high-precision digital insulation and continuity tester. Built to handle demanding diagnostic work, it offers three distinct insulation test voltage ranges (250V, 500V, and 1000V) alongside standard AC/DC voltage measurement capabilities up to 750V AC and 1000V DC. Safety and efficiency are built into every feature. During insulation testing, the large dual-display LCD shows both the measured resistance and the actual output voltage. Once testing concludes, the instrument automatically discharges the circuit for safe handling. Equipped with a live circuit warning buzzer, a continuous lock-down test button, and a 200mA short-circuit continuity range, the MT550 is housed in a rugged double-molded rubber casing and supplied with a hands-free magnetic hanging strap for ultimate jobsite convenience.