• 3VL Molded Case Circuit-Breakers 3VL molded case circuit-breakers - the universal solution: Enormous versatility plus space-saving, compact design are the most striking features of the circuit- breakers from 16 A to 1,600 A as they slip into distribution-board layouts. You have a choice of trip element, either thermo-magnetic (16 A to 630 A) or elec- tronic (63 A to 1,600 A), and the entire range has only two families of internal accessories. It all adds up to maximum versatility combined with minimum expense. The whole range is now also available with UL-approval.