2000VDC Industrial DC Resistance Box – Variable Resistor
2000VDC Industrial DC Resistance Box – Variable Resistor
2000VDC Industrial-Grade DC Resistance Box
This compact, sealed DC Resistance Box is a precision electronic component designed for engineers, technicians, and educators who need a reliable, adjustable standard resistance source in their DC circuits. Rated up to 2000VDC with ±2% resistance accuracy, it handles demanding testing, calibration, and lab work with ease. Made in Mainland China.
What Is a DC Resistance Box?
A DC resistance box is an electronic instrument that precisely adjusts and outputs fixed or variable DC resistance values. It uses internally preset resistor units — including metal film and wirewound resistors — switched via a mechanical or electronic mechanism. This provides a traceable, stable, and flexibly adjustable standard resistance load or calibration reference for DC circuits.
Key Applications
- Circuit Testing & Debugging: Connect a known resistance load to verify DC power supply performance, simulate actual loads (e.g., motor or sensor equivalents), and confirm that control circuits respond correctly — all before final installation.
- Load Simulation: Adjust resistance values to change load current (per Ohm's Law: I = U/R) and observe output voltage stability under rated load conditions.
- Fault Diagnosis: Compare theoretically calculated values with actual measurements to isolate faults caused by abnormal load resistance — short circuits, open circuits, or resistance drift.
- Instrument Calibration: Use as a precision resistance standard source to calibrate multimeters, ohmmeters, DC power supplies, and resistance testers, ensuring accurate measurement results across your instruments.
- Teaching & Lab Experiments: Ideal for educational settings where students need a safe, repeatable reference resistance for hands-on experiments.
Full Specifications
| Models Available | 1M, 10M, 100M, 1000M |
| Material | ABS |
| Color | White |
| Rated Resistance | 100 MΩ |
| Resistance Accuracy | ±2% (at 23°C ± 5°C) |
| Resistance Voltage | 2000 VDC (between two binding posts) |
| Resistance Power | 0.25 W |
| Operating Temperature | -40°C to 60°C, ≤80% RH |
| Dimensions (L × W × H) | 64 mm × 58 mm × 35.5 mm (excluding binding posts) |
| Binding Post Dimensions | Ø13 mm × 24 mm, 40 mm spacing |
| Electrical Connection | Socket: Ø4 mm × 17 mm; Stud: M6 |
| Battery Required | No |
| Origin | Made in Mainland China |
Package Contents
- 1 × 2000VDC Industrial-Grade DC Resistance Box
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Note: Actual color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement deviations.
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Frequently Asked Questions
Q: What resistance models are available for the 2000VDC Industrial-Grade DC Resistance Box?
A: This resistance box is available in four models: 1M, 10M, 100M, and 1000M. Each model provides a different rated resistance range, allowing you to select the best fit for your specific circuit testing or calibration application.
Q: Can this DC resistance box be used for instrument calibration?
A: Yes. The resistance box provides a stable and accurate standard resistance source (±2% accuracy at 23°C ± 5°C), making it well suited for calibrating multimeters, ohmmeters, DC power supplies, and resistance testers.
Q: What voltage rating does this resistance box support?
A: This resistance box is rated for up to 2000VDC between its two binding posts, making it suitable for industrial-grade testing and high-voltage DC circuit applications.
Q: Is any battery or external power required to use this resistance box?
A: No battery or external power supply is needed. The DC resistance box is a passive component — simply connect it to your circuit using the binding posts to introduce the desired resistance value.