UNI-T UT501A Insulation Resistance Tester

Selectable High-Voltage Test Range: Delivers 3 precise test voltage outputs (100V, 250V, and 1000V) to measure insulation resistance up to 5G ohms.

Automatic AC Voltage Measurement: Accurately measures AC line voltage from 30V to 750V with automatic live circuit detection.

Continuous Measurement & Lock Mode: Features a continuous test button lock function for hands-free, extended insulation resistance testing over time.

Audible & Visual High-Voltage Warning: High-voltage red warning light and audible alarm automatically alert the user when test voltage output is active.

Clear LCD Screen with Backlight: Equipped with a large digital display featuring backlighting for easy reading in dark or enclosed panels.

Auto-Discharge Safety Function: Automatically discharges residual electrical charges from capacitive test circuits upon completing a measurement.

Housing & Cable Hardware: High-impact, double-insulated ABS protective body casing with heavy-duty insulated alligator clip test leads and a protective neck strap/carrying pouch.

Technical Specifications:

Insulation Resistance Test Voltages: 100V / 250V / 1000V.

Insulation Resistance Range: 0.00M ohms - 5.00 G ohms.

AC Voltage Range: 30V - 750V (50/60Hz).

Power Supply: Powered by 6 x 1.5V AA batteries.

Usage & Safety Instructions: CAT III 600V Rated. Always ensure the circuit under test is completely de-energized before connecting high-voltage insulation test probes.

Maintenance & Cleaning: Keep the input terminals and test lead plugs free of grease and dust. Wipe clean with a soft, dry microfiber cloth.

Essential Compact Insulation Diagnostic Meter: Position as an accessible, highly portable insulation resistance tester for maintenance electricians, HVAC technicians, transformer installers, and cable auditors.

Highlight 1000V Capacity & Auto-Discharge Safety: Emphasize its high 1000V testing threshold alongside automatic circuit discharge safety as key features for field compliance checks.

Recommended Cross-Sell Add-ons: Pair with UNI-T UT 511 Insulation Resistance Tester (100V - 1000V), UNI-T UT 582+ Digital RCD (ELCB) Tester, Uni-T UT07 Socket Tester, and DL8003 12-240V AC.DC digital test pen.

Core Electrical Diagnostic Highlight: Feature prominently on your Other Measuring Instruments collection page as an entry-level high-voltage insulation tester.