Klein Tools Digital Insulation Resistance Tester Auto-Ranging TRMS Multimeter

Klein Tools ET600 Digital Megohmmeter / Insulation Resistance Tester

Verify system integrity and ensure code-compliant heat trace installations with the ET600 Multi-Function Megohmmeter. Built for critical quality assurance on self-regulating and constant-wattage heating cables, the ET600 delivers test voltages of 125V, 250V, 500V, and 1000V DC to accurately measure cable insulation resistance up to 4000MΩ.

From pre-installation spool testing to post-installation roof and pipe-trace commissioning, the ET600 validates that the dielectric jacket, bus wires, and ground braid are free from cuts, moisture infiltration, or thermal damage before power is applied. Featuring True RMS (TRMS) AC/DC voltage measurement, a hands-free lock function, and a backlit dual display, the ET600 provides the precision and reliability demanded by professional heat trace installers and electrical contractors.

Highlights for Heat Trace Applications

• Code-Compliant Megger Testing: Meets manufacturer warranty and NEC requirements for cable integrity verification, offering selectable test voltages at 125V, 250V, 500V, and 1000V DC with readings up to 4000MΩ.

• Continuous Test Lock Function: Hands-free test and lock buttons hold test voltage continuously, allowing you to easily perform IEEE/manufacturer-recommended 1-minute insulation resistance runs.

• Heavy-Duty Alligator Clips Included: Heavy-duty clips attach securely to the heating cable’s copper bus wires and outer tinned-copper ground braid for dependable, hands-off measurements.

• Live Voltage Warning & Safety Alarm: High-voltage indicator and audible warning protect the user and instrument if connected to an energized circuit.

• Full Multi-Meter Diagnostics: Measures up to 1000V AC/DC, continuity, and resistance, making it easy to confirm line voltage at the power connection kit before energizing.

• True RMS (TRMS) Auto-Ranging: Delivers maximum accuracy on non-linear or noisy jobsite circuits, field generators, and temporary service panels.

• High-Visibility Backlit Display: Dual-function digital screen with an analog-style bar graph ensures easy readability in dark mechanical rooms, attics, or overcast outdoor conditions.

• Hands-Free Field Setup: Built-in kickstand and optional magnetic hanger allow convenient positioning on control cabinets, junction boxes, or service ladders.

• Industrial Safety Ratings: Certified to CAT IV 600V and CAT III 1000V standards and conforms to EN61557-1, -2, -4 for rugged field safety.

Package Contents

• (1) ET600 Megohmmeter / Insulation Tester

• (1) Set of Right-Angle Test Leads

• (1) Set of Heavy-Duty Alligator Clip Test Leads

• Batteries and User Manual