A Type Time Delay RCD – 80A 100mA, 2 Pole (WARTD280-100)
18th Ed. Compliant
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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, its built-in time delay ensures only the RCD closest to the fault disconnects, avoiding unnecessary shutdowns of healthy circuits. Ideal for EV charging points, renewable energy...
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, its built-in time delay ensures only the RCD closest to the fault disconnects, avoiding unnecessary shutdowns of healthy circuits. Ideal for EV charging points, renewable energy installs, and industrial distribution boards, it’s fully compliant with BS EN 61008-1 and the 18th Edition Wiring Regulations.
Installer Tip: Use 80A time delay RCDs upstream in dual-RCD or multi-board systems. Always confirm load rating and coordination requirements before selection.
Key Features
- 2 Pole A-Type RCD – detects AC + pulsating DC leakage
- Time delay (S-Type) – ensures proper discrimination
- 80A rated current – sits between 63A and 100A options
- Sensitivity: 100mA (also available in 30mA / 300mA)
- DIN-rail mountable – compact 36mm unit
- Compatible with RCBOs and SPDs for complete protection
- Standard compliance: BS EN 61008-1 / 18th Edition regs
Compare Time Delay RCD Variants
| Model | Poles | Rated Current | Sensitivity | Type |
|---|---|---|---|---|
| WARTD263-100 | 2 Pole | 63A | 100mA | A-Type, Time Delay (S-Type) |
| WARTD280-100 (This Product) | 2 Pole | 80A | 100mA | A-Type, Time Delay (S-Type) |
| WARTD2100-100 | 2 Pole | 100A | 100mA | A-Type, Time Delay (S-Type) |
Where is the WARTD280-100 best used?
It’s ideal for upstream use in multi-RCD boards, EV charging setups, and renewable installs where supply integrity must be maintained.
Why choose the 80A version over 63A or 100A?
The 80A model offers a balance between lower domestic boards and heavy commercial systems. For smaller circuits use the 63A variant, while 100A is best for larger installs.
Is this device compliant with 18th Edition regs?
Yes – it meets BS EN 61008-1 and all requirements for discrimination under Amendment 2.
Can it be used as the only RCD in a circuit?
No. Time delay RCDs must not be the sole protective device on final circuits – they are intended for upstream discrimination only.
- Product Code: WARTD280-100
- Type: A-Type (S-Type) Time Delay RCD
- Rated Current: 80A
- Sensitivity: 100mA (also 30mA / 300mA options)
- Poles: 2 Pole
- Voltage: 230/400V AC, 50Hz
- Short Circuit Rating: 6kA
- Mechanical Endurance: 4000 cycles
- Electrical Endurance: 2000 cycles
- Ingress Protection: IP20
- Module Width: 36mm
- Dimensions: 36 × 82 × 70mm
- Standards: BS EN 61008-1
The WARTD280-100 is designed for upstream placement where RCD discrimination is required. Install only in suitable enclosures and ensure all design checks are completed before commissioning.
- Mount directly to DIN rail
- Rated for 80A maximum current
- Use only as part of coordinated RCD setups
- Correct torque setting: 2.5Nm
- Final testing must be performed by a qualified electrician
