Electron-Beam Current Measurement Resistor Kwh Ammeter Shunt

Description

Electron-Beam Shunt Resistor for KWh Meter Current Measurement

Our electron-beam welded shunt resistors are specifically designed for KWh meters, energy monitoring, and industrial ammeters. With ultra-low resistance values (30μΩ to 1200μΩ) and up to Class 1.0 accuracy, they enable precise current measurement in compact meter designs.

Using electron-beam welding technology, these shunts offer excellent mechanical strength, thermal stability, and long-term electrical consistency under varying loads and temperatures

Key Features

• Wide resistance range: 30μΩ–1200μΩ

• Accuracy: Class 1.0 with ±2%~±5% tolerance

• Structure: Electron-beam welded for stability and precision

• Connection: Soft wires or direct PCB soldering

• Customizable: Pin and body size can be tailored to IEC or BS meter standards

• Material: Copper–Manganin–Copper composite for high conductivity

Shunt Resistor Selection Guide

Application	Type	Max Current (Imax)	Accuracy Class	Thickness (mm)	Resistance (μΩ)	Tolerance
kWh Energy Meter	Electron Beam Welding Shunt	10A	Class 1.0	1.0	800–1200	±2–5%
		40–60A	Class 1.0	1.0–1.2	250–500	±2–5%
		80A	Class 1.0	1.5–2.0	150–250	±2–5%
		100A	Class 1.0	1.5–2.0	100–200	±2–5%
		120A	Class 1.0	1.5–2.0	100–180	±2–5%
		200A	Class 1.0	2.0–2.5	30–80	±2–5%

Applications

• Smart KWh energy meters (single-phase and three-phase)

• Industrial ammeters and power analyzers

• Current sampling in energy metering systems

• Compatible with IEC and BS meter connection standards