TeSys Vario, switch disconnector, 12A, on door. range: TeSys – product name: TeSys VARIO – device short name: VBF – device application: preventive maintenance – performance level: high performance – contacts type and composition: 3 NO – network type: AC, DC – rotary handle mounting style: direct – handle colour: black – handle front plate colour: black – suitability for isolation: yes.