This is the MK G4870 1 Gang 1 Way 10A Single Switch Moulded White, part of the MK Logic Plus range.

• Conforms to BS EN 60669-1: 2000
• Style: modern profile
• Part of a wide range of switches and sockets, and matching Grid switches are available in 10 or 20A ratings
• 3mm switch contact gap
• This switch does not have to be derated when used with fluorescent or inductive loads.
• Single rocker switch on a slim moulded white plate. 
• Switch: Positive switch action
• Fixing centres: 60.3mm
• Rating: 10A, 10AX inductive rated
• Flush mounting backbox: min. 16 mm deep
• Top access, backed out and captive terminal screws
• Plate dimensions: 86mm x 86 mm, single plate. 
• It can take the 3995ZIC flush or K2160WHI surface mounting box when installed.