Industrial-grade electrical instrument for precision measurement of circuit breaker contacts, switchgear joints, and bus-bar resistance with micro-ohm accuracy.
Redefining electrical safety through precision micro-ohm resistance diagnostic tools.
◆ As a leader in electrical instrument manufacturing, our tester provides the critical data needed to how to test circuit breaker with test button and contact integrity. By employing Ohm's Law (R=U/I), it ensures that every junction in your power system meets the strictest international safety standards.
◆ The technical advantage lies in its selectable test currents (100A/200A/300A) and a resolution as fine as 0.1μΩ. When professionals analyze how to test circuit breaker with test button procedures, they rely on our built-in clock and 100-result memory to track degradation over time.
Engineering excellence built on accuracy, stability, and operational intelligence.
Achieving microscopic precision for the most demanding electrical junctions.
Optimized power output for various contact sizes and materials.
Integrated memory and time-stamping for longitudinal auditing.
Comparative analysis of measurement precision across different current modes.
Detailed specifications for high-precision electrical contact resistance testing.
| Parameter | 100A Mode | 200A Mode | 300A Mode | Accuracy | Resolution |
|---|---|---|---|---|---|
| Measuring Range | 1μΩ to 20mΩ | 1μΩ to 10mΩ | 1μΩ to 6mΩ | ± 0.5% rdg | 0.1μΩ |
| Output Power | 1kW | 2kW | 3kW | Stable | N/A |
| Ammeter Accuracy | ± 0.5% rdg | ± 0.5% rdg | ± 0.5% rdg | ± 0.1A | Fixed |
| Output Time | 1s to 60s | 1s to 60s | 1s to 60s | Programmable | 1s step |
| Power Supply | 198-264VAC | 198-264VAC | 198-264VAC | 47-63Hz | AC |
| Memory Capacity | 100 results | 100 results | 100 results | Internal | Digital |
| Env. Temp | -20 to 50℃ | -20 to 50℃ | -20 to 50℃ | Wide Range | Standard |
| Physical Dim. | 427mm | 357mm | 193mm | Weight: 9kg | Industrial |
Proven performance across diverse industrial power grids.
Implemented our 300A mode for rapid verification of bus-bar joint resistance during scheduled maintenance.
Utilized the memory function to track contact wear on 200+ circuit breakers, optimizing replacement cycles.
Applied micro-ohm testing to verify the integrity of high-current bus-bar connections in heavy machinery.
Crucial testing of circuit breaker contacts to prevent arcing in critical mission-critical power paths.
Tailored solutions for demanding electrical environments.
Testing contact resistance in heavy-duty circuit breakers to ensure grid stability.
Quality control testing for bus-bar joints and switchgear assembly lines.
Monitoring high-current contacts in traction substations to prevent outages.
Testing heavy-duty contactors in rugged mining power distribution units.
Ensuring explosion-proof switchgear contacts are within resistance specs.
Verifying UPS and PDU contact resistance for 24/7 uptime reliability.
Every unit is calibrated against national standards to ensure ±0.5% accuracy across all current modes.
Constructed with reinforced housing and high-grade circuitry for stable performance from -20 to 50℃.
Each device undergoes 48 hours of continuous output stability tests before final shipment.
Certified by global engineering standards for industrial safety and accuracy.
Expert answers to common technical and commercial inquiries.
By measuring the contact resistance, you can detect carbon buildup or oxidation. Integrating this with the knowledge of how to test circuit breaker with test button allows for a comprehensive mechanical and electrical audit.
The 300A mode provides higher power (3kW), which is essential for very low resistance joints (micro-ohms) to maintain a high signal-to-noise ratio and accuracy.
The device stores 100 results internally with date and device IDs. You can review these on the display or use the internal memory for manual logging audits.
Yes, with an operating temperature range of -20 to 50℃ and a robust industrial chassis, it is designed specifically for substation and field environments.
In 100A mode, the resolution ranges from 0.1μΩ up to 10μΩ depending on the measurement range, ensuring high precision for standard contacts.
We recommend annual calibration to maintain the ±0.5% accuracy standard, especially when used for regulatory safety compliance audits.
Get the industry's most reliable contact resistance tester for precision electrical auditing.
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