UNIT UT505A Handheld Insulation Resistance Testers

The UNI-T UT505A is a multifunctional handheld insulation resistance tester that combines true RMS multimeter features with advanced insulation testing. Designed for professionals in maintenance and diagnostics, it supports insulation resistance testing up to 20GΩ across selectable voltages from 50V to 1000V. Accuracy ranges from ±(1.5%+5) for most scales, making it reliable for motors, transformers, switches, cables, and electrical appliances.

Beyond basic measurement, the UT505A includes PI (Polarization Index), DAR (Dielectric Absorption Ratio), resistance ratio calculations, and step voltage testing. It also offers DC/AC voltage up to 600V, low resistance measurement (up to 20kΩ), auto discharge, analog bar graph, continuity buzzer, and comparison mode.

With a 6000-count display, auto range, and ergonomic design (only 630g), it’s powered by six 1.5V batteries. The UT505A is a rugged, precise, and portable solution for field technicians who need insulation testing and multimeter capabilities in one compact tool.