ACTUATOR KNOB O-I; For Use With:3SB3 Non-Illuminated Pushbutton Switches; IP / NEMA Rating:IP66; Product Range:SIRIUS 3SB3 Series; SVHC:No SVHC (12-Jan-2017); Approvals / Standards:EN 60947 IEC 60529 IEC 60947; Colour:Black; IP Rating:IP66; Insulation Resistance Voltage:400V; Material:Plastic; Mounting Hole Dia:22mm; No. of Positions:2Ways; Proof Voltage:5V