DIN 43703 Shunt Resistors – Standard Overview
DIN 43703 defines the dimensional and electrical characteristics of standardized current shunt resistors used for DC measurement in industrial applications. This page explains the standard, typical ratings and how to select a compliant shunt.
What is DIN 43703?
DIN 43703 is a German industrial standard that specifies:
- Nominal current ratings
- Standard voltage drops (typically 50mV, 60mV, 75mV, 100mV)
- Terminal spacing and hole dimensions
- Accuracy classes
It ensures interchangeability between manufacturers and simplifies integration into panels, switchgear and industrial measurement systems.
Typical current ranges
| Current Range | Typical Voltage Drops | Common Applications |
|---|---|---|
| 1 – 25A | 50mV / 60mV / 75mV | Instrumentation panels |
| 30 – 150A | 50mV / 75mV / 100mV | Industrial automation |
| 200 – 1000A | 60mV / 75mV / 100mV | Power supplies / Rectifiers |
| 1200 – 4000A | 75mV / 100mV | Battery systems / BESS |
| 5000 – 15000A | 75mV / 100mV (custom) | High power DC / Busbar systems |
Exact availability depends on design, mounting and thermal conditions.
Accuracy classes
DIN shunts are typically supplied in:
- Class 0.5
- Class 0.2
- Class 0.1 (on request)
Accuracy refers to deviation at nominal current under defined temperature conditions. Kelvin (4-wire) connection is recommended for precision measurement.
Thermal and mechanical considerations
- Define continuous vs overload current.
- Check busbar spacing compatibility.
- Ensure adequate airflow or mounting mass.
- Verify terminal torque and contact resistance.
DIN 43703 Manufacturer – Technical Support
Send your current rating, voltage drop and mechanical constraints. Our engineering team will confirm DIN compliance and thermal suitability.