Siemens Timing relay, 2 change-over contacts, 12-240VAC/DCProduct Overview Timing relay, multifunction 2 changeover contacts, 27 functions 7 time ranges (0. 05 s 100 h) 12 240 V AC DC at 50 60 Hz AC with LED, screw terminal This premium multifunction timing relay (Article Number: 3RP2505 1BW30) from the SIRIUS 3RP25 series provides the most comprehensive timing control for demanding industrial automation applications. The device features two changeover contacts with 27 selectable functions and offers seven