

Megger MOM3 Handheld Micro-Ohmmeter
The MOM3 is a handheld, high-current micro-ohmmeter designed for serious low-resistance testing tasks. With up to 300 A output and automatic ranging from around 0.1 µΩ to 3000 mΩ, it’s built for precision checks of critical connections such as circuit-breaker contacts, busbar joints and other high-current metal interfaces.
Description
The MOM3 is engineered to meet the needs of field engineers who must perform low-resistance measurements on demanding assets. It delivers up to 300 A of test current thanks to an ultracapacitor discharge system, enabling measurement of extremely low resistances with high stability. The auto-ranging capability covers from micro-ohms through milli-ohms, automating range selection for ease of use and minimising human error. The unit is battery-powered and weighs just about 1.1 kg, making it ultra-portable for on-site work. It features a rugged rubber-armoured case for durability, wireless (WiFi) or USB connectivity for data transfer and is compliant with relevant IEEE/IEC standards for micro-ohmmeters. Whether verifying joint integrity, checking contact resistances in switchgear, or ensuring weld quality, the MOM3 offers a powerful mix of performance and portability.
Features
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High test current capability: up to 300 A for high-resolution low-resistance measurements.
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Wide measurement span: auto-range from ~0.1 µΩ to 3000 mΩ to cover very low resistances.
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Auto-ranging functionality: simplifies user workflow and ensures correct measuring range.
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Lightweight and portable: approx. 1.1 kg, making it convenient for field use.
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Battery-powered for flexible operation without mains supply required.
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Rugged build: rubber-armoured housing for drop protection and durability.
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Data connectivity: WiFi or USB for result transfer and integration into asset-management systems.
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Designed for critical use-cases: ideal for circuit-breaker contacts, busbar joints, welds, safety grounding.
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Complies with international standards for low-resistance measurement.
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Practical for repeated testing: enables fast measurements with minimal setup, boosting inspection productivity.
Includes
- BK-30091
- MOM3
- Soft carrying case
- Charger
- Carrying strap
- BK-30191
- MOM3
- MOM3 Kelvin probes 1.3 m cable set, 2 x 1.3 m (4 ft) one with trig button
- Test cables with Kelvin probes
- Soft carrying case
- Charger
- Carrying strap
- BK-30291
- MOM3
- MOM3 Kelvin clamps, 3 m cable set, 1.3 m (4 ft) Red, 3 m (10 ft) black
- Test cable red with Kelvin clamp
- Test cable black with Kelvin clamp
- Soft carrying case
- Charger
- Carrying strap
- BK-30381
- MOM3
- MOM3 with Kelvin clamps, 5 m cable set, 1.3 m (4 ft) Red, 5 m (10 ft) black
- Test cable red with Kelvin clamp
- Test cable black with Kelvin clamp
- Soft carrying case
- Charger
- Carrying strap










