4 Pole Type A RCD – 100A High Immunity
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WAR4100-030 is a 4 pole, 100A Type A RCD with high immunity, designed for heavy-duty three-phase applications where maximum load capacity and nuisance-trip resistance are critical. Compliant with BS EN 61008-1 and BS EN 61008-2-1, it delivers reliable residual current protection for three-phase distribution systems, EV charging infrastructure, and...
The WAR4100-030 is a 4 pole, 100A Type A RCD with high immunity, designed for heavy-duty three-phase applications where maximum load capacity and nuisance-trip resistance are critical. Compliant with BS EN 61008-1 and BS EN 61008-2-1, it delivers reliable residual current protection for three-phase distribution systems, EV charging infrastructure, and industrial equipment.
The high immunity design filters out transient disturbances and harmonic noise that would cause standard RCDs to trip unnecessarily, ensuring stable operation even in challenging environments. At 100A rated current, this is the largest model in the 4-pole high immunity series, built for demanding installations.
Installer Tip: Choose the 100A 4-pole model for large commercial or industrial sites with multiple three-phase circuits, high inrush loads, or clustered EV charging points.
Key Features
- 100A, 4 Pole – for high-capacity three-phase + neutral applications
- High Immunity – minimises false trips from harmonics and surges
- Type A – detects AC and pulsed DC residual currents
- Standards: BS EN 61008-1 & 61008-2-1 compliant
- Robust build with DIN rail mounting
- Compatible with three-phase boards and EV-ready installations
Compare High Immunity RCD Variants
| Model | Poles | Rating | Immunity |
|---|---|---|---|
| WAR463-030 | 4 | 63A | High Immunity |
| WAR480-030 | 4 | 80A | High Immunity |
| WAR4100-030 (This Product) | 4 | 100A | High Immunity |
| WAR263-030 | 2 | 63A | High Immunity |
| WAR280-030 | 2 | 80A | High Immunity |
| WAR2100-030 | 2 | 100A | High Immunity |
Where is a 100A high immunity RCD typically used?
It’s suited for large commercial or industrial sites with heavy three-phase loads, clustered EV charging stations, or high inrush equipment.
Does this RCD protect against DC leakage?
As a Type A device, it detects AC and pulsed DC residual currents, making it suitable for EV and renewable circuits.
Why choose high immunity?
High immunity RCDs reduce false tripping in environments with harmonics or transient surges — ensuring stable operation.
What’s the main difference between the 80A and 100A versions?
The 100A unit offers greater load capacity, making it suitable for heavier circuits or future expansion compared to the 80A model.
- Model: WAR4100-030
- Type: Type A, High Immunity
- Poles: 4
- Rated Current: 100A
- Rated Residual Current: 30mA
- Compliance: BS EN 61008-1 / BS EN 61008-2-1
- Mounting: 35mm DIN rail
- Voltage: 230/400V AC
- Frequency: 50Hz
- Operating Temperature: -25°C to +40°C
Supplied ready for DIN rail mounting. Installation must be carried out by a qualified electrician. Suitable for high-capacity three-phase applications up to 100A.
- Check system rating before selection – 100A max load
- Maintain torque settings on terminals
- Test with calibrated RCD tester at commissioning
- Ensure high immunity design is appropriate for load type
