Auxiliary Contacts

Looking to expand the functionality of your existing contactors or motor starters? Our selection of Auxiliary Contacts offers simple, cost-effective add-ons for status indication, interlocking, and circuit logic.

These factory-new auxiliary contact blocks are compatible with popular contactor series from brands like Allen Bradley, Eaton, and Sprecher + Schuh. Choose from front or side-mount options, multiple contact configurations, and snap-on designs for quick, tool-free installation.

  • Available in 1NO, 1NC, 2NO/2NC and mixed configurations
  • Enhances safety and control logic in motor circuits
  • UL recognized and built for long-cycle performance

Browse our in-stock Auxiliary Contacts now and get fast shipping and expert assistance for your application.

  • Siemens 3RH1911-1HA13 auxiliary contact

    3RH1911-1HA13

    Siemens 3RH1911-1HA13 4-pole auxiliary contact block with one normally open (N.O.) and three normally closed (N.C.) for front mounting on Sirius size S00 (3RT1015, 3RT1016, 3RT1017) contactors. This auxiliary comes with screw terminals and only 1 can be...

    $0.00
  • Siemens 3RH1921-1HA31 auxiliary contact

    3RH1921-1HA31

    Siemens 3RH1921-1HA31 front mounted auxiliary contact comes with 3 normally open and 1 normally closed auxiliaries, screw terminals and mounts to any Siemens 3RT1 Size S0, S2, or S3 3 pole contactor.  This four pole contact block snaps onto the...

    MSRP: $47.50
    $28.09
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  • Siemens 3RH2911-1HA30 auxiliary

    3RH2911-1HA30

    Siemens 3RH2911-1HA30 three pole front mounted auxiliary switch block with 3 normally open (N.O.) contacts. This Siemens Sirius auxiliary comes with screw terminals and can be installed on any size S00 (3RT2015 through 3RT2018), S0 (3RT2023 through...

    MSRP: $32.00
    $16.03
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  • Siemens 3RH2911-1HA31 auxiliary

    3RH2911-1HA31

    Siemens 3RH2911-1HA31 four pole front mounted auxiliary switch block with 3 normally open (N.O.) and 1 normally closed (N.C.) contacts. This Siemens Sirius auxiliary comes with screw terminals and can be installed on any size S00 (3RT2015 through...

    MSRP: $42.00
    $18.52
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  • C320KG5 C320KG5

    C320KG5

    Eaton / Cutler Hammer C320KG5 Series A2 two pole side mounted auxiliary contact with 2 N.C. contacts. Fits all C25D Definite Purpose contactors from 15 A up to 75A. Click here to view a PDF file of this Cutler Hammer Auxiliary contactSpend $100 on any...

    MSRP: $104.19
    $37.50
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  • Eaton XTCEXFAC13 Auxiliary Contact

    XTCEXFAC13

    Eaton XTCEXFAC13 four-pole auxiliary contact block with 1 normally open and 3 normally closed contacts and screw terminals. This front mounted auxiliary snaps onto any Eaton XTRE 4 pole relay or XTCE contactors up to frame C and comes with screw...

    MSRP: $66.50
    $24.44
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  • XTCEXFBLG22

    XTCEXFBLG22

    EATON XTCEXFCLC22 4 pole, top mounted auxiliary contact block with 1 E.M. and 1 L.B. contacts and 1 N.O. and 1 N.C. contacts. For use on the EATON XTCE040D10 - XTCE150G contactors. Click here to view a PDF file of this EATON XTCEX Auxiliary contact block...

    MSRP: $66.50
    $24.44
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  • XTMCXFA02

    XTMCXFA02

    EATON XTMCXFA02 2 pole top mounted auxiliary contact block with 2 N.C. contacts. Click here to view a PDF file of this EATON XTMCX auxiliary contact The EATON line of XTMCXFA auxiliaries come in 2-pole and 4-pole variations. All possible electrical...

    MSRP: $24.50
    $10.68
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  • Eaton/Moeller 02DILE auxiliary contact Eaton/Moeller 02DILE dimensions

    02DILE

    Eaton/Moeller 02DILE front mounted auxiliary contact block with 2 normally closed contacts (N.C.) and screw terminals.  This two pole auxiliary contact snaps on to the front of any DILEM miniature contactor or DILER miniature control relay and only...

    MSRP: $40.00
    $13.23
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  • Allen Bradley 100-FA13 auxiliary contact Allen Bradley 100-FA13 side label

    100-FA13

    The Allen Bradley 100-FA13 is a front mounted, four pole auxiliary contact with 1 normally open and 3 normally closed contacts.  With screw terminals and snap on installation, this contact block easily installs onto any AB 100-C series contactor for...

    MSRP: $62.14
    $36.32
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  • Lovato 11BF5040 23060 contactor Lovato 11BF5040 23060 dimensions

    11BF5040 23060

    Lovato 11BF5040 4 pole contactor Lovato 11BF5040 23060 90 AMP - 4 pole contactor with a 230vAC coil4-TERMINAL COILConnecting cables can be coupled to the Lovato BF contactor coil both on the line and load ends of the contactor.MECHANICAL INTERLOCKSize 1...

    MSRP: $321.26
    $299.99
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  • Lovato 11BGX1004 contactor Lovato 11BGX1004 dimensions

    11BGX1004

    The Lovato BGX1004 is a four pole, front mounted auxiliary that installs onto any BG series contactor from 6 to 12 AMPS and comes with screw terminals.  This Lovato auxiliary contact has four normally closed auxiliaries that can be added to the...

    MSRP: $25.98
    $24.27
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