Auxiliary switch, suitable for electronics, front-mounted, 2 S, 3/4, current path: 1 S (suitable for electronics), 1 S (suitable for electronics), screw connection, for contactors 3RT2 and auxiliary contactors 3RH2. The SIRIUS 3RH29 auxiliary switch is designed to expand the auxiliary contacts in the control circuit. The front-mounted auxiliary switches 3RH29 can be installed on the contactors 3RT2 and auxiliary contactors 3RH2 without tools, regardless of size. The auxiliary switches 3RH19/3RH29 are available in front-mounted or side-mounted versions, with up to four instantaneously switching or up to two early switching normally open and normally closed contacts. The auxiliary switches can be designed as positively driven contact elements in auxiliary contactors 3RH or as mirror contacts in power contactors 3RT. They are available with both screw connections and spring-loaded connections. Simple, efficient, always up to date - the SIRIUS modular system.