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Havells 3 Phase & Industrial Controls, 3 Phase Consumer Unit, 3 Phase Fuse Boards | Consumer Units | Screwfix.comGreat prices on 3 Phase Consumer Units at Screwfix. Free delivery on orders over £50 or free collection in 5 minutes from stores. | 1000's of products available in-store and online at low trade prices | FREE next day delivery available | FREE collection in 5 minutes | FREE Returns