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Contact Resistance Tester

Contact Resistance Testers & Meters for Sale

The contact resistance test (commonly known as the Ductor test) measures the resistance of electrical connections such as joints, terminations, connectors, etc. These can be connections between any two conductors, for instance busbar sections or cable connections. The test measures the resistance at the micro- or milli-ohm level and is used primarily to verify that electrical connections are made properly, and can detect the following problems:

  • Loose connections
  • Adequate tension on bolted joints
  • Eroded contact surfaces
  • Contaminated or corroded contacts

This is particularly important for contacts that carry large amounts of current (e.g. switchgear busbars) as higher contact resistance leads to higher losses and lower current carrying capacity.

Also check our EMF Meters!



Image Ad title Price Condition Location
Keysight (formerly Agilent) 4338A The Agilent-HP 4338A digital milliohmmeter is a $ 3272.00 USDUsedUS
Keysight (formerly Agilent) 4338B $ 2900.00 USDUsedUS
Keysight (formerly Agilent) 4338B Ideal for precise measurements of extremely low $ 2782.00 USDUsedUS
Keysight (formerly Agilent) E4991A ContactUsedUS
Keysight - 34420A NanoVolt/Micro-Ohm Meter $ 3556.00 USDUsedUS
Keysight / Agilent (HP) 4338A Digital Millohmmeter, Refurbished. The Keysight Agilent... $ 1795.00 USDUsedUS
Keysight Agilent HP 4328A Milliohmmeter $ 695.00 USDUsedUS
Keysight Agilent HP 4338A Millohmmeter $ 895.00 USDUsedUS
Keysight Agilent HP 4338B Milliohmeter ContactUsedUS
Keysight Agilent HP Keysight / Agilent (HP) 16143B Mating Cable, Refurbished. The... $ 395.00 USDUsedUS
Keysight Agilent HP Keysight / Agilent (HP) 4338B 1 kHz Milliohm Meter, Refurbished.... $ 2695.00 USDUsedUS
Keysight Agilent HP The 16008B is designed to operate specifically with the 4339A/B... ContactUsedUS
Megger - DLRO-10X Digital Low Resistance Ohmmeter $ 3019.00 USDUsedUS
Megger - DLRO-H200 Microhmmeter $ 5618.00 USDNewUS
Megger 210400 5kV MegohmmeterThe 5-kV Megohm-meters are high-voltage, line operated $ 1992.00 USDUsedUS
Megger 210415 15 kV Megohmmeter Megger 210415 Megohmmeter 15 kV, 300 GOhmsThe 5- and $ 2792.00 USDUsedUS
Megger : DLRO 200-115 Digital Low Resistance Ohmmeter $ 4995.00 USDUsedUS
Megger DLRO-600 Contact Resistance Tester, 600A Ductor $ 4000.00 USDUsedCA
Megger Multi-Amp M400 830250 Micro-Ohmeter. Up to 100 Amp. $ 2495.00 USDUsedUS
Quadtech : LR2000 Milliohmeter (Chroma) Quadtech LR2000 Milliohmeter (Chroma), 1µΩ -... ContactUsedUS


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