Siemens 3RT29161JJ00 Surge Suppressor. SIRIUS Surge Suppressor, For Use With: Size S00 Motor Contactor and Contactor Relay, 24 to 48 VAC/12 to 24 VDC, 50/60 Hz, -25 to 60 deg C Operating Temperature, Clip-On Mount, 46 mm H x 28 mm W x 9 mm D. Additional Description: SIEM-3RT29161JJ00 SURGE SUPPRESR S00 W LED AC 24-48. Catalog Description: Surge suppressor, varistor with led, AC 24...48V, DC 12...24V, f. cont. relays a. motor cont. sz s00.