Switches > Battery Isolator Switches - Battery isolator - removable key in the "on" or "off" position - Auto Electric Supplies Website
Heavy Duty Battery Isolator Switch With Removable Key - 250 Amps @ 24V
Master Battery Isolator Immobiliser Switch Removable Key - 100A [ALM Part Reference - 0-605-20] - £29.50 : ALM Solutions, Auto Electrical Parts and Accessories for Cars, Boats, Caravans and Campers