Modular button SB4 complete 22mm with return metal 1NO black. SE SB4BA21 Systeme Electric

SB4 series button assembly, modular, for mounting in 22mm diameter holes, black, with spring return, in a metal enclosure. Number of contacts: 1NO. SystemeSig control and signaling devices are widely used in process equipment and machines, distribution and control cabinets, industrial plants, infrastructure facilities, and civil construction (formerly Schneider Electric Harmony Sig XB4BA21).