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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, its time delay ensures proper discrimination, allowing downstream RCDs to trip first and keeping supply integrity across unaffected circuits. It’s a trusted choice for industrial distribution systems, EV charging infrastructure, and renewable installs. Fully compliant with BS EN 61008-1 and 18th Edition Wiring Regulations.
Installer Tip: Use the 100A 4 Pole model as the main incomer protection for large three-phase boards where selective coordination is essential. Always pair with downstream RCBOs or RCDs for full system protection.
Key Features
- 4 Pole A-Type RCD – disconnects all line and neutral conductors
- Time delay (S-Type) – upstream device trips last
- 100A rated current – handles larger three-phase installs
- Sensitivity: 100mA (also available in 30mA / 300mA)
- DIN-rail mountable – 72mm width
- Heavy-duty design: 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 |
|---|---|---|---|---|
| WARTD463-100 | 4 Pole | 63A | 100mA | A-Type, Time Delay (S-Type) |
| WARTD480-100 | 4 Pole | 80A | 100mA | A-Type, Time Delay (S-Type) |
| WARTD4100-100 (This Product) | 4 Pole | 100A | 100mA | A-Type, Time Delay (S-Type) |
