4 Pole 100A Main Switch
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WCED WMS4100 is a robust 4 Pole 100A Main Switch designed for safe and reliable isolation of three-phase distribution boards and consumer unit enclosures. Suitable for both domestic and commercial installs, it disconnects all three phases and neutral simultaneously, ensuring compliance with the 18th Edition Wiring Regulations. Built to...
The WCED WMS4100 is a robust 4 Pole 100A Main Switch designed for safe and reliable isolation of three-phase distribution boards and consumer unit enclosures. Suitable for both domestic and commercial installs, it disconnects all three phases and neutral simultaneously, ensuring compliance with the 18th Edition Wiring Regulations.
Built to withstand 10,000 electrical cycles and 10,000 mechanical operations, this main switch delivers long service life even in demanding environments. Its DIN rail format makes it simple to integrate into circuit protection systems, whether for new installs or board upgrades.
- 4 Pole, 100A rated main switch for full isolation
- 230/400V AC operational voltage
- Tested for 10,000 electrical + 10,000 mechanical operations
- Compact, DIN rail mountable design
- Trusted for main switch and isolator setups
- Complies with BS EN 60947-3
- Dimensions: 70mm (W) x 82mm (H) x 70mm (D)
What is a 4 pole main switch?
A 4 pole main switch provides isolation for three phases and neutral. It disconnects all conductors simultaneously, making it a core part of three-phase boards & accessories.
Where is a 4 pole main switch used?
Typically installed in consumer unit enclosures, distribution boards, and commercial switchgear as the primary isolator.
What is the difference between a 2 pole and 4 pole main switch?
A 2 pole switch isolates live and neutral in single-phase systems, while a 4 pole device isolates three phases and neutral in three-phase installs.
Does this product comply with UK standards?
Yes – the WCED WMS4100 complies with BS EN 60947-3 and fully meets the requirements of the 18th Edition circuit protection standards.
Which categories does this product relate to?
This main switch is part of our Main Switches & Rotary Isolators range, and pairs with enclosures and three-phase boards for safe, compliant installs.
- Type: Main Switch
- Poles: 4 Pole (3 phase + neutral)
- Rated Current: 100A
- Rated Voltage: 230/400V AC
- Electrical Life: 10,000 cycles
- Mechanical Life: 10,000 operations
- Mounting: 35mm DIN rail
- Standards: BS EN 60947-3
- Dimensions (WxHxD): 70 x 82 x 70mm
This main switch is designed for straightforward installation in consumer units, distribution boards, and enclosures. It must be fitted by a qualified electrician in accordance with BS 7671 (18th Edition) requirements.
- Mounts directly on standard 35mm DIN rail
- Ensure adequate clearance for cable terminations
- Use as the incoming isolator in three-phase + neutral boards
- Always test continuity and isolation after installation
