P1 ; P3 시리즈 Isolator Accessories. Handles, shafts and accessories for use with the Eaton P1 ; P3 switch-disconnector range. SVB handles provide door interlock when in the ON position. SVB switch handles can be locked in the ODD position with up to 3 x 8 mm padlocks. H-P1 ; H-P3 terminal shrouds provides cover for connection terminals.