The Klein Tools Insulation Resistance Tester is built for electricians and maintenance professionals who need reliable diagnostics when commissioning new wiring, troubleshooting motor circuits, or conducting preventive maintenance on electrical equipment. It delivers insulation resistance readings up to 400 kΩ across four selectable DC test voltages (125V, 250V, 500V, 1000V), plus AC/DC voltage measurement up to 1000V and continuity testing — all in one rugged CAT IV 600V / CAT III 1000V rated housing. A lock button keeps testing hands-free during extended measurements, and the 4000-count LCD ensures clear readings in demanding site conditions.

Specifications

Product Type Insulation Resistance Tester
Functions Insulation Resistance, Voltage AC/DC, Resistance, Continuity
DC Test Voltages 125V, 250V, 500V, 1000V
AC/DC Voltage Measurement Up to 1000V
Insulation Resistance Range Up to 400 kΩ
Display 4000 Count LCD
Safety Rating CAT IV 600V / CAT III 1000V
Standards EN61557-1, EN61557-2, EN61557-4
Special Features Lock Button for Hands-Free Testing
Material ABS / Polycarbonate
Colour Orange / Black
Power 6 × AA Batteries
Dimensions (L × W × H) 7.93 × 3.59 × 2.32 in (20.1 × 9.1 × 5.9 cm)
Weight 22.4 oz (635 g)
Included Tester, CAT III/IV Test Leads, Heavy-Duty Alligator Clip Leads, Batteries, Carrying Case, Instruction Manual
Vendor Klein Tools