Electronically delayed front-mounted auxiliary switch, time range 0.05...1s, AC/DC 24 V, 1 NO + 1 NC, off-delayed, without control signal for 3RT1 auxiliary switch SIRIUS 3RT19, off-delayed, for time-delayed switching operations for mounting on 3RT1 contactors.Application area for 3RT105, 3RT1.6 and 3RT1.7 contactors. Can be used worldwide thanks to international approvals and wide voltage range.Available for contactors S6 to S12, in various voltages and time ranges.SIRIUS relays - a program for all cases.