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Siemens IEC Auxiliary Contact Blocks

Siemens IEC Auxiliary Contact Blocks for motor controls expansion.


  • Side mount and top mount designs
  • Not compatible with previous generation 3RT1 series contactors (Frame Size S00 – S0)
  • Other auxiliary block combinations are available
  • To maintain UL Certification, use with 3RT2 series contactors



Model Number Frame Size Contact Type Mount Type
S0 - S31NO+1NCSide Mount
S00 - S32NO+2NCTop Mount
S6 - S122NO+2NCTop Mount
S6 - S121 NO, 1 NCSide Mount
S0 - S31NO+1NC
S00 - S32NO+2NCTop Mount
S001NO+1NCSide Mount