Resistance Testers 65 Items

65 Items

Resistance Testers

Resistance testers — also known as ohmmeters — are essential tools for verifying electrical safety and system reliability. From insulation resistance testers (megohmmeters) that measure extremely high resistances to low resistance ohmmeters (micro-ohmmeters) designed for precise low-ohm measurements, these instruments cover the full spectrum of resistance testing needs.

Resistance Testers
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Megger MOM2 240A Handheld Micro Ohmmeter Product View
Megger DLRO200 High Current Low Resistance Ohmmeter NIST Calibrated
Fluke 1550C 5kv Insulation Resistance Tester with Alligator Clips
Megger DLRO10X Digital Low Resistance Ohmmeter Product View
Megger DLRO10X Digital Low Resistance Ohmmeter Unit, Megger Connect Test Lead with Indicator Lights, Megger Duplex Probe, Strap for Unit, AC Adapter/Charger, Power Cord
Megger DLRO10, Megger Duplex Handspike, Duplex Probe, Heavy Duty Kelvin Clip with Duplex Test Lead, Power Cord, Carrying Case
Used Megger MOM2 BD-59092 240 A Handheld Micro-Ohmmeter with Kelvin Clamps and Carry Case
Megger DLRO10HD, a high-current digital low resistance ohmmeter designed for testing and measuring resistance in electrical connections, contacts, and conductors. The image shows the front panel of the device with a large, easy-to-read LCD display
Megger DLRO10HD Digital Low Resistance Ohmmeter Product with Accessories
Megger MIT515 5 kV insulation resistance tester with medium insulated clip leadset and power cable
Megger MIT515 5kV DC Insulation Resistance Tester Product with Accessories
Megger DLRO10HD - Digital Low Resistance Ohmmeter, 10 Amp
Fluke 1555 Insulation Resistance Tester MegOhmmeter 10kV Product View
Megger S1 568 5kV Insulation Resistance Tester All Accessories
Megger MIT520/2 5 kV High Voltage Insulation Resistance Tester

Resistance testers and ohmmeters play a vital role in electrical maintenance, troubleshooting, and compliance testing. By accurately measuring resistance across cables, windings, and connections, they help technicians identify weaknesses before they lead to failures, downtime, or safety hazards. Our lineup includes two primary categories: 

Insulation Resistance Testers (Megohmmeters)

These instruments apply high DC test voltages to measure very high resistance values, often in the megohm to teraohm range. As specialized ohmmeters, they are used to verify the integrity of insulation in cables, transformers, and motors, ensuring systems remain safe and dependable.

Low Resistance & Micro-Ohmmeters

These testers use high test currents and four-wire measurement techniques to capture very low resistance values down to micro-ohms. Also referred to as low-resistance ohmmeters, they are essential for checking the quality of breaker contacts, busbar joints, welds, and grounding bonds where reliable, low-resistance connections are critical.

Together, these resistance testers and ohmmeters provide complete coverage for both high-resistance and low-resistance applications, making them indispensable tools for utilities, industrial plants, and field service technicians.