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Circuit Breaker Contact Resistance Testing

Static (contact) resistance measurements (SRM); micro-Ohm measurement of the main contacts. This test is conducted by injecting DC current through the breaker main contact system when the circuit breaker is closed, and measuring the voltage drop so that the resistance can be calculated. The resistance reflects the condition of the conducting parts.

Megger MOM2

Hand- Held 200A Micro-Ohmmeter

  • Up to 220 A
  • Battery powered
  • Light weighs only 1 kg
  • Safe test – DualGround™
  • Auto range: 1 μΩ to 1000 mΩ
  • Bluetooth® PC communication
  • Complies with IEEE and IEC standards
Product details...

Megger DLRO100 Series

Highly portable 100A Micro-Ohmeter

  • CAT IV 600 V for safe operation
  • Light, 100 A, battery powered unit for portability
  • High noise immunity for stable readings
  • Smooth DC output for circuit breaker testing
  • IP54 for protection against dust and moisture whilst testing
  • Save, download and delete results
  • Remote operation, Bluetooth® and asset and result tagging
Product details...

Megger DLRO200

  • Small and weighs less than 15kg
  • Test currents from 10 A to 200 A d.c.
  • 0.1 µΩ best resolution
  • On board memory for up to 300 test results and notes
  • RS232 port to download stored results or for real time output to a printer
  • Supplied complete with 5m test leads and download software
Product details...

Megger DLRO600

  • Small and weighs less than 33 lbs (15 kg)
  • Test currents from 10 A to 600 A dc
  • 0.1 µohms best resolution
  • On board memory for up to 300 test results and notes
  • RS232 port to download stored results or for real time output to a printer
  • Supplied complete with 16.4 ft. (5 m) test leads and download software
Product details...

Megger MOM200 & 600

  • Designed for use in electrically noisy environments
  • Measures contact resistance in circuit breakers, disconnecting switches, busbar connections, safety devices, etc.
  • Easy to operate
  • Designed for rugged field use
  • Highly flexible cable connections
  • Portable and lightweight, weighs from 14 kg