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
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
Megger DLRO200
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





