A Type Time Delay RCD – 100A 100mA, 2 Pole (WARTD2100-100)
18th Ed. Compliant
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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 proper discrimination, allowing downstream RCDs to clear faults first while maintaining supply continuity elsewhere. Perfect for EV charging infrastructure, renewable installs, and industrial distribution boards where...
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 proper discrimination, allowing downstream RCDs to clear faults first while maintaining supply continuity elsewhere. Perfect for EV charging infrastructure, renewable installs, and industrial distribution boards where system integrity is critical. Fully compliant with BS EN 61008-1 and the 18th Edition Wiring Regulations.
Installer Tip: Choose the 100A 2 Pole model for larger installs where the main incomer needs time-delayed fault protection. Ideal in setups with multiple downstream RCDs or boards.
Key Features
- 2 Pole A-Type RCD – monitors AC + pulsating DC leakage
- Time delay (S-Type) – ensures selective tripping in upstream positions
- 100A rated current – suited to large-scale or industrial boards
- Sensitivity: 100mA (other sensitivities available: 30mA / 300mA)
- DIN-rail mountable – compact 36mm unit
- High endurance: 4000 mechanical / 2000 electrical cycles
- Complies with BS EN 61008-1 and 18th Edition Amendment 2
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 | 2 Pole | 80A | 100mA | A-Type, Time Delay (S-Type) |
| WARTD2100-100 (This Product) | 2 Pole | 100A | 100mA | A-Type, Time Delay (S-Type) |
When should I use the WARTD2100-100?
It’s suited to large-scale installs where the main 100A incomer requires time-delayed protection to coordinate with downstream RCDs.
Can this protect EV and renewable systems?
Yes – it’s often specified upstream in EV charging infrastructure, solar or heat pump installs, and backup generator systems.
Is it 18th Edition compliant?
Yes – it meets BS EN 61008-1 and the coordination rules under Amendment 2.
Does a time delay RCD remove the need for RCBOs?
No – downstream RCBOs still provide circuit-level protection. The time delay unit simply ensures proper coordination.
- Product Code: WARTD2100-100
- Type: A-Type (S-Type) Time Delay RCD
- Rated Current: 100A
- Sensitivity: 100mA (also available 30mA / 300mA)
- Poles: 2 Pole
- Voltage: 230/400V AC, 50Hz
- Breaking Capacity: 6kA
- Mechanical Endurance: 4000 cycles
- Electrical Endurance: 2000 cycles
- Ingress Protection: IP20
- Module Width: 36mm
- Dimensions: 36 × 82 × 70mm
- Standards: BS EN 61008-1
- Terminal Torque: 2.5Nm
The WARTD2100-100 is intended for upstream use only in dual-RCD or multi-board systems where discrimination is required. Do not use as the sole RCD on final circuits.
- Mount to DIN rail inside a suitable enclosure
- Rated at 100A for large boards and high-load installs
- Apply 2.5Nm torque to terminals
- Confirm coordination during design stage
- Installation must be by a qualified electrician
