Name: Standard Resistance Box SRB-3
SKU: SRB-3

Description

Technical Specifications

Model: SRB-3
Type: Standard Resistance Box / Reference Standard
Accuracy: ±0.2%
Resistance Range: 1 mΩ to 1 kΩ
Resistance Steps (7 values):
- 1 mΩ, 10 mΩ, 100 mΩ, 1 Ω, 10 Ω, 100 Ω, 1 kΩ
Resistor Material: High-stability manganin wire coils
Temperature Coefficient: 0.000002 (virtually zero TCR)
Power Rating: 1 Watt per resistance step
Maximum Current Capacity:
- 1 mΩ – 50 A
- 10 mΩ – 15 A
- 100 mΩ – 3.5 A
- 1 Ω – 1 A
- 10 Ω – 320 mA
- 100 Ω – 100 mA
- 1 kΩ – 30 mA
Compatible Instruments: Kelvin Double Bridge and Digital Micro-Ohm Meter
Applications: Calibration & testing laboratories, wire & cable industry, QA departments, educational institutes

📋 Product Overview

The Standard Resistance Box SRB-3 is a high-precision reference instrument engineered for professional electrical calibration and measurement applications requiring superior accuracy and long-term stability. Offering ±0.2% accuracy, it delivers dependable resistance standards across the critical range of 1 milliohm to 1 kiloohm.

The unit uses manganin resistance coils, known for their near-zero temperature coefficient (TCR 0.000002), ensuring minimal variation due to ambient temperature changes. This makes SRB-3 ideal for accurate low-resistance measurements where thermal stability is critical.

Featuring seven fixed resistance values, each rated at 1 watt, SRB-3 handles high current loads, especially at milliohm ranges. It integrates seamlessly with Kelvin Double Bridges and Digital Micro-Ohm Meters, serving as a dependable reference standard for instrument verification, calibration, and comparative testing.

Widely used across wire & cable manufacturing units, calibration laboratories, quality inspection departments, and technical institutions, the SRB-3 provides unmatched precision, reliability, and durability in resistance measurement applications.