Handheld Battery Powered Contact Resistance Tester 100A 200A Micro-Ohmmeter for Fast Circuit Breaker and Switchgear Field Testing

The Handheld Battery Powered Contact Resistance Tester is designed for field engineers who need a compact instrument for quick low-resistance measurements.

The instrument integrates the battery, high-current source, measurement circuit and display into a portable enclosure.

It is suitable for maintenance teams that frequently travel between substations and industrial sites.

Some current handheld products provide selectable currents up to 200A, 0.1 μΩ resolution, internal storage and fast measurement times.

• Circuit breaker contact resistance
• Switchgear contact resistance
• Isolator contact resistance
• Busbar joint resistance
• Low-resistance measurement
• Micro-ohm measurement
• High-current DC injection
• Fast measurement
• Data storage
• USB data transfer
• Optional printer

• Compact and lightweight
• Battery powered
• Easy to carry
• Fast testing
• Suitable for outdoor environments
• Large digital display
• Internal memory
• Multiple current selections

Q: How many tests can a battery-powered tester perform?

A: This depends on the battery capacity, test current, test duration and operating conditions. Some current models advertise hundreds of tests per charge.

Q: Is a handheld tester accurate enough for maintenance?

A: A properly specified professional micro-ohmmeter can provide the required accuracy for its intended testing range. The exact accuracy should be checked against the model's calibration specification.