Contact Resistance Meter: PCRM-100S

Motwane’s Digital Contact Resistance Meter, Model PCRM-100S is specially designed to measure extremely low resistances in micro ohms. The instrument is based on the Kelvin four wire connection method for the measurement of low resistance.


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    Motwane’s Digital Contact Resistance Meter, Model PCRM-100S is specially designed to measure extremely low resistances in micro ohms. The instrument is based on the Kelvin four wire connection method for the measurement of low resistance. The selectable current injection is 100A. PCRM 100S has a large LCD with a backlight and displays real-time test information like injected current with measured resistance value & voltage drop. This user friendly instrument comes with heavy duty cables with clamps for accurate measurement and can be easily transported in its transportation case. Advanced Windows based software is provided for data downloading, analysis, and report generation. Internal memory of 99 records is provided for onsite data storage along with an in-built thermal printer to print the test results on the field.

    PCRM 100S has a dual ground technique to test circuit breakers with both sides grounded, which makes it safer to conduct tests in substations

    PCRM 100S has a Bluetooth connectivity module with Motware mobile app for remote access of testing data & storage in the cloud for further analysis & record purposes.



    Stationary and moving contacts are built from alloys that are formulated to endure the stresses of electrical arcing. However, if contacts are not maintained on a regular basis, their electrical resistance due to repeated arcing builds up, resulting in a significant decrease in the contact’s ability to carry current and an increase in resistance. Excessive corrosion of contacts is detrimental to the breaker’s performance. Hence to check contacts, apply DC and measure the contact resistance or voltage drop across the closed contacts. The use of a higher current value gives more reliable results than using lower current values. The resistance value is usually measured in micro ohms (μΩ).

    PCRM-100S is specially used to measure static contact resistance of LV, HV, EHV circuit breaker contacts installed in energized switchyards. High accuracy and repeatability make it a reliable tool for quality assurance and easy operations. It is a very handy tool for quick maintenance checks in various industries. 

    Typical resistance measurement applications are: 

    Circuit breaker contact resistance 
    Bus bar joints 
    Isolator contacts 
    Weld joints 
    Bond resistance


    • 100A DC test current 
    • Resistance range: 0.1µΩ to 2mΩ 
    • Direct mV drop reading 
    • Built-in thermal printer 
    • Internal memory of 99 test results 
    • Mains and battery operated 
    • USB interface for data transfer 
    • LED indication for mains/battery/LOBAT 
    • Calibration due indicator 
    • Dual grounding facility 
    • Conformity IP 54, CE
    • Bluetooth enabled for Motware mobile app

    Test Current Injection: 100A DC 
    Test ON Alert: BEEP 
    Range & Resolution: 200µΩ with 0.1µΩ 
                                 2000µΩ with 1µΩ 
    Measurement Principle: Four wire measurement 
    Basic Accuracy: ± 2% of reading, ± 5 digits 
    Memory Storage: 99 reading storage facility
    Computer Interface: USB 
    Thermal Printer: For printing the test results 
    Display: Custom Built 3 ½ digit LCD with a backlight

    Physical Specifications 

    Enclosure Material: Industrial grade polypropylene 
    Dimensions (LxWxH): 365mm x 465mm x 185mm 
    Weight: 11 Kg approx

    Power Supply 

    Mains: 115V-230V, 50Hz / 60Hz single phase AC supply 
    Battery: Rechargeable Li-ion 
    Power Consumption: 35VA, 6.0 watt on battery 


    Operating Temperature: 0°C to 55°C
    Storage Temperature: 0°C to 50°C
    Humidity: less than 95% RH, non condensing

    Safety Standards 

    Safety: According to EN 61010 – 1 
    EMC: According to EN 61326 – 1 
    IP Rating: IP 54 
    Measurement Category: CAT II 
    CE certification : LVD: 2006/95/EC 
    EMC certification: 2004/104/EC.

    Software Details

    Type: Windows-based software 
    Interface: USB 
    Data Transfer: Real-time data 
    Internal Data Storage: 99 test results 
    Features: Remote Operation 
                  Data down loading 
                  Analysis and report generation 

    Standard Accessories 

    • 15 meters lead set with C Clamp 75mm opening 
    • Master earthing cable (7 meters) 
    • Mains power cord 
    • User manual 
    • Calibration certificate 
    • Thermal paper roll 
    • Spare fuse (250mA/250V slow blow) 

    Optional Accessories 

    • 22 meters lead set with C clamp 150mm jaw size 
    • 15 meters heavy duty lead set with alligator clip 
    • Software and USB Cord
    • Bluetooth application via cloud-based Motware application

    Motware Cloud Application

    Motwane has designed and developed MOT-WARE – a cloud-based Test Data platform to aid in accurate Asset Health Assessment. Through Motware, the Test and Measurement industry has taken a huge leap forward. It is a revolution in the way tests are conducted and the way data is analyzed. 

    MOT-WARE captures data from a full range of BLE Enabled Motwane Testing Equipment. It is accessible from web based applications, desktop applications, and mobile applications. In addition, it offers an open architecture that can seamlessly integrate with any non Motwane Test and Measurement equipment for quick and authentic digital test data. Data can be captured periodically as well as be streamed in real-time via sensors from IoX’n Series of IoT devices. (link to Ioxn page)

    Some of its features include a pre-loaded repository of test templates for various assets as well as customizable test templates. A customized report builder in MOT-WARE allows users to create reports that can be designed and generated as per their desire. MOT-WARE also has a facility to upload test data history and the breakdown history of the assets. Tests can also be viewed in various metrics such as Pass/Fail.

    Digital test data enables data analytics and visualization which offers multiple statistical advantages. It improves productivity & efficiency, enables cost reduction, and improves asset life. Data analysis done through MOT-WARE includes trend analysis, MIS reports, and pivot tables. As an add-on, MOT-WARE also offers ‘Motwane AI Analytics’(Link to AI Analytics page)  which uses a proprietary AI algorithm and Machine Learning to make accurate predictions about your asset’s life based on its behavioral patterns and operating conditions.

    MOT-WARE can be used for various applications across customer segments like Utilities, OEMs, Industries, Electrical contractors (Testing, O&M) or Field repairs & service providers, EPCs, commercial premises, and many more. 

    Join the latest innovation in Electrical Testing by using Motware on your Test and Measurement equipment.

    Our Customers

    Motwane’s customer base is a testament to its ongoing ability to provide reliable, accurate, and long-lasting products, resulting in enduring relationships that are based on mutual satisfaction, loyalty, and trust.

    Contact Us

    Motwane products are highly reliable, built with great quality, and deliver accurate results.  We at BSES Rajdhani Power have been using Motwane products for many years, and continue to do so.

    Shailendra Saxena

    Additional VP Protection BSES Rajdhani Power Ltd.

    Motwane is the oldest and the most trusted company in electrical testing products and solutions also. Motwane is known for reliable and rugged products also, we have procured from them. And our organization has been using these products and have found them satisfactory in performance and services also.

    Mr. Shrikant S Rajurkar

    Director Technical MSETCL

    By using the MOT-WARE software, all equipment testing difficulties have been removed, leading to increased efficiency and happy clients.

    Mr. Milind Thekedar

    Managing Director JBS Enterprises Pvt. Ltd.

    Motwane offers great products! The company fullfills our demands, and supplies reliable products for our Power, Oil & Gas, and other industry projects.  

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    FAWAZ Trading & Engineering Services Co. W.L.L.

    MOTWANE is reputed brand since many years & we prefer it for all our International Projects

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    DGM- India Operations MBH Power Pvt. Ltd.

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    LABGULF Sharjah UAE

    TATA Projects regularly uses Motwane’s Test & Measurement equipment for various undertakings. We are satisfied with the product performance!

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    AGM Projects Tata Projects Ltd.

    MOT-WARE will enable us to go live with data immediately after recording

    Sanjay Sarkar

    Head Projects IBMS SPG, Sterling and Wilson

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