The UNI-T UT502A is a professional-grade insulation resistance tester designed for comprehensive electrical equipment diagnostics. This instrument measures insulation resistance between circuits and ground, making it essential for validating the safety and performance of transformers, generators, high-voltage motors, capacitors, cables, and surge arresters. Beyond standard resistance measurement, the UT502A delivers advanced testing capabilities including AC voltage measurement, low resistance detection, Polarization Index (PI), and Dielectric Absorption Ratio (DAR) analysis. These multi-function features enable technicians to perform thorough insulation assessments and identify potential equipment degradation before failures occur. Ideal for maintenance teams and electrical professionals requiring reliable, accurate testing across diverse industrial and commercial applications.

The UNI-T UT502A delivers robust insulation testing performance in a compact, portable design. Powered by six LR6 batteries, this tester features a large 70.6mm x 34mm display for clear reading of results in field conditions. Weighing just 500g with dimensions of 150mm x 100mm x 71mm, it fits easily into tool kits and service vehicles. The red and grey housing provides durability and professional appearance. Each unit ships complete with batteries, test leads, alligator clips, test probes, carrying bag, and comprehensive English manual—everything needed for immediate deployment. Built for professional technicians who demand reliability and portability without compromising measurement accuracy.

The UNI-T Insulation Resistance Tester (UT502A) is a reliable Digital Resistance Tester for professionals. This tester checks insulation resistance in cables, machinery, and electrical installations. It delivers accurate digital readings for fast, safe diagnostics. The compact design fits well in any electrician tool kit.

UNI-T has designed this Digital Resistance Tester for convenience and ease of use. It features clear labeling, large rotary dial, and durable buttons. You get fast measurements with just a single press. Readings are displayed on a bright digital screen. This makes recording results easy under any lighting condition.

Users appreciate the secure grip and sturdy build. Carry the tester confidently around job sites. The Digital Resistance Tester is engineered for endurance in tough industrial environments. It withstands drops and daily wear. Use the tester to measure insulation resistance up to 2500V, 1000V, and 500V. Select the right voltage for the task. Each setting is clearly marked for accuracy.

The tester operates with both AC and DC voltage. CAT II 600V safety rating keeps users protected. The test terminals are color-coded, reducing risk of wiring errors. Maintenance technicians, engineers, and electricians trust this tool during troubleshooting and safety checks.

The Digital Resistance Tester is perfect for power panels, cables, transformers, and wiring. It helps find insulation faults before they cause major issues. Use it during installation, maintenance, or regular inspections to prevent downtime. Test results are consistent. The tester supports zero adjustment for precise calibration.

Rely on this Digital Resistance Tester for accurate, dependable performance in the field. It is an essential choice for those working on industrial and commercial electrical systems. Electx Electrical Supply offers this tool for professionals who demand quality and reliability every day.