Siemens Auxiliary Switch Block, Lateral, 24/230 V AC/24/110/220 V DC, 1/3/10 A, 2 Contacts, Snap-On Mount, 10000000/200000 Cycles Operating Cycles, -25 to 60 deg C Operating, Environmental Conditions: -55 to 80 deg C Storage Temperature, For Use With: 3RH, 3RT Contactor, Power Contactor, 57.4 mm H x 10 mm W x 66 mm D