Name: Standard Resistance Box SRB-27
SKU: SRB-27

Description

Technical Specifications

Model: SRB-27
Type: Standard Resistance Box / Reference Standard
Accuracy: ±0.2%
Resistance Range: 0.5 mΩ to 2 kΩ
Resistance Steps (9 values):
- 0.5 mΩ, 20 mΩ, 50 mΩ, 200 mΩ
- 2 Ω, 20 Ω, 50 Ω, 200 Ω, 500 Ω, 2 kΩ
Resistor Material: High-stability Manganin wire coils
Power Rating: More than 1 Watt on all resistance values
Maximum Current Capacity:
- 0.5 mΩ – 100 A
- 20 mΩ – 50 A
- 50 mΩ – 5 A
- 200 mΩ – 3 A
- 2 Ω – 1.5 A
- 20 Ω – 0.5 A
- 50 Ω – 0.30 A
- 200 Ω – 100 mA
- 500 Ω – 50 mA
- 2 kΩ – 50 mA
Calibration: Can be verified by NABL-accredited laboratories (external testing charges apply)
Applications: Calibration labs, wire & cable testing, QA departments, R&D facilities, educational institutes

📋 Product Overview

The Standard Resistance Box SRB-27 is a high-precision reference instrument engineered for accurate resistance calibration and electrical testing across both low-ohm and mid-range resistance values. Offering a resistance span from 0.5 milliohms to 2 kilo-ohms with ±0.2% accuracy, it ensures reliable measurements in professional laboratory and industrial environments.

The resistance coils are manufactured from manganin wire, known for excellent stability and extremely low temperature coefficient, ensuring minimal drift and dependable long-term performance. Each resistance step is rated at more than 1 watt, allowing safe operation during high-current tests without thermal degradation.

With nine precisely calibrated resistance steps, the SRB-27 integrates seamlessly with Kelvin Double Bridges and Digital Micro-Ohm Meters, making it ideal for reference standard calibration, comparative measurements, quality assurance testing, and R&D validation.

It is widely used in the wire and cable industry, calibration laboratories, testing facilities, educational institutions, and industrial QA departments where accurate low-resistance measurement and stable intermediate resistance reference values are required.