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Type A RCDs are designed to detect AC and pulsed DC residual currents, making them the correct choice for today’s inverter-driven appliances, EV chargers, heat pumps, induction hobs and most modern domestic circuits. They provide fast, reliable disconnection where smooth DC leakage is unlikely but pulsed DC is present.
Unlike older AC-type devices, Type A RCDs remain stable and responsive when equipment introduces DC components into the circuit. They are suitable for single-phase installations and are available in a range of current ratings and sensitivities for different protective requirements.
Type A RCDs are now considered the standard for general-purpose protection in most new builds and rewires, offering improved resilience and safety compared to legacy AC-type devices.
The WAR440-030 is a 4 pole, 40A Type A RCD with high immunity, engineered to reduce nuisance tripping on circuits affected by surge currents...
WARTD263-100 is a 2 pole A-type 100mA time delay RCD designed for use where two RCDs are installed in series and discrimination is required....
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...
The WAR263-030 is a 2 pole, 63A Type A RCD with high immunity, designed for reliable residual current protection in single-phase installations where stable...
The WARTD2100-100 A-Type Time Delay RCD is a 2 Pole S-Type unit rated at 100A for heavy-duty upstream protection. Its built-in time delay ensures...
The WAR240-030 is a 2 pole 40A 30mA Type A High Immunity RCD designed for reliable residual current protection in single-phase installations where stable...
The WARTD480-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 80A, designed for selective upstream protection. Its built-in delay...
The WARTD280-100 A-Type 100mA Time Delay RCD is a 2 Pole S-Type device rated at 80A. Designed for upstream use in selective coordination systems,...
The WARTD463-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 63A. Its built-in time delay ensures upstream discrimination, allowing...
The WARTD4100-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 100A for large-scale three-phase boards. Designed for upstream use,...
The WAR480-030 is a 4 pole, 80A Type A RCD with high immunity, designed for demanding three-phase applications where nuisance tripping must be avoided....
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...
Type A RCDs detect AC and pulsating DC residual currents. They are widely used with modern electronic loads, but the correct RCD type, rated current, sensitivity, pole format and any time-delay characteristic must come from the equipment instructions and installation design.
Typically used on suitable single-phase installations. Confirm current rating, residual operating current and coordination with the associated overcurrent protection.
Used on suitable three-phase arrangements. All monitored conductors must pass through the device as required by the supply and manufacturer instructions.
Specialist devices can support selectivity or improve stability in appropriate applications. They are not interchangeable with standard 30mA additional protection.
RCDsType B RCDs3-Phase RCDs100mA Time-Delay RCDsType A RCBOs
Trade support: UK-stocked products, manufacturer-backed specifications and fast dispatch. Check each product page for ratings, standards, stock status and delivery details before ordering.
$132.00 ex VAT
VAT: Product prices exclude VAT. VAT is added at checkout.
