4 Pole Type A RCD – 63A High Immunity
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WAR463-030 is a 4 pole, 63A Type A RCD with high immunity, engineered to reduce nuisance tripping on circuits affected by surge currents or harmonics. Fully compliant with BS EN 61008-1 and BS EN 61008-2-1, it provides reliable residual current protection for three-phase distribution boards, EV charger installs, and...
The WAR463-030 is a 4 pole, 63A Type A RCD with high immunity, engineered to reduce nuisance tripping on circuits affected by surge currents or harmonics. Fully compliant with BS EN 61008-1 and BS EN 61008-2-1, it provides reliable residual current protection for three-phase distribution boards, EV charger installs, and other sensitive loads.
By using a high immunity design, this RCD maintains safety while filtering out brief disturbances that can cause standard Type A devices to trip unnecessarily. The 4-pole configuration ensures full protection across three-phase + neutral applications.
Installer Tip: Choose a high immunity Type A RCD where circuits include equipment with switching power supplies, drives, or frequent surge activity — such as EV chargers, HVAC systems, and LED lighting banks.
Key Features
- 63A, 4 Pole – suitable for three-phase + neutral applications
- High Immunity – reduces nuisance trips from harmonics and surges
- Type A sensitivity – detects AC and pulsed DC residual currents
- Compliant with BS EN 61008-1 & 61008-2-1
- Robust terminals and secure DIN rail mounting
- Compatible with three-phase distribution boards and EV-ready consumer units
Compare High Immunity RCD Variants
| Model | Poles | Rating | Immunity |
|---|---|---|---|
| WAR463-030 (This Product) | 4 | 63A | High Immunity |
| WAR480-030 | 4 | 80A | High Immunity |
| WAR4100-030 | 4 | 100A | High Immunity |
| WAR263-030 | 2 | 63A | High Immunity |
| WAR280-030 | 2 | 80A | High Immunity |
| WAR2100-030 | 2 | 100A | High Immunity |
What does “high immunity” mean on this RCD?
It means the device is less prone to nuisance tripping caused by harmonics, surge currents, or transient disturbances, while still maintaining residual current protection.
Is this suitable for EV charger installations?
Yes – high immunity Type A RCDs are recommended for EV circuits where harmonics and DC leakage are more likely.
Can this RCD protect standard three-phase loads?
Yes – it provides protection across three-phase + neutral applications, making it suitable for distribution boards, HVAC systems, and industrial circuits.
What’s the difference between 2-pole and 4-pole versions?
2-pole RCDs protect single-phase circuits (line + neutral), while 4-pole models cover three-phase + neutral systems.
- Model: WAR463-030
- Type: Type A, High Immunity
- Poles: 4
- Rated Current: 63A
- Rated Residual Current: 30mA
- Standard 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 installation on DIN rail. Final connection must be completed by a qualified electrician. Ensure compatibility with load and supply characteristics before fitting.
- Use in three-phase + neutral systems up to 63A
- Maintain correct polarity and terminal torque settings
- Test with calibrated RCD tester during commissioning
- Confirm high immunity behaviour is suitable for circuit type
