874-2175, Siemens, Siemens SIRIUS ACT 3SU15 Series Contact Block, 5 → 500V ac/dc, 1NC, Brand Siemens, Block Type Contact Block, Voltage Rating 5 → 500V ac/dc, Series SIRIUS ACT 3SU15 Siemens SIRIUS ACT 3SU15 Series Contact Block, 5 → 500V ac/dc, 1NC