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The WSPD440 is a 4 Pole Type 2 Surge Protection Device designed for 230/400V three-phase + neutral systems
Installer Tip: Choose the B Curve version for resistive loads such as lighting and socket circuits
see the 40A B Curve variant
B Curve tripping – quick disconnection (3–5x In)
The durable steel IP65 housing makes it suitable for exposed sites such as garages
Twin Screw 100A Main Switch 4 Pole WIS4100 Surge Protected Consumer Units The WSPD440 is a 4The WIS4100 is a robust 4 pole 100A main switch with twin screw terminals for secure, reliable clamping. Designed for isolating circuits in both domestic consumer units and three phase distribution boards, it ensures safe disconnection fully in line with the 18th Edition Wiring Regulations. Compact in footprint and fitted with a colour coded handle, it integrates easily into electrical enclosures and consumer units. Suitable for both single phase and
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