- VERSATILE SWITCH: 1 gang standard white square electric wall light switch is compatible with single 16mm/25mm/35mm/45mm pattress back box surface mounted installations. 10Amp (X rated) suitable for inductive load. Supplied with M3.5 x 25mm fixing screws. Terminal Capacity - 3x1.5mmA. Three Pole Isolators provide isolation of fans for maintenance or repair without isolation of complete circuit HIGH QUALITY: BSEN specifications, fully ASTA approved; Kite Mark WARANTY: 25 Years. Manufactured in accordance to International standards such as ASTA, CE, and RoHS. SWITCH: Dimensions 86 x 86 x 9mm; Fixing Centre 60.3mm