Control Relays

Four pole industrial and miniature control relays offer an economical and versatile solution for motor switching with the option for a total of eight poles in normally open or normally closed states. While a standard 3 pole contactor offers power poles in the normally open state, control relays come with 4 poles and all possible configurations, with bases of 2 open and 2 closed, 3 open and 1 closed and 4 open  and auxiliaries with all four pole possible combinations.


Many manufacturers offer miniature control relays, from Eaton's XTRM line to Allen Bradleys 700-K series that has the same options and reliability as the larger models but in a compact unit for applications where space constraints are limiting. Either option provides for easy installation, as all 4 pole relays can easily be mounted on standard 35MM Din rail and come with screw terminals for easy installation which saves time and reduces the costs of installation and downtime.

  • Siemens 3RH2131-1BD40 AC Control Relay Siemens 3RH2131-1BD40 Terminal Designations

    3RH2131-1BD40

    Siemens 3RH2131-1BD40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 42 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2131-1BF40 AC Control Relay Siemens 3RH2131-1BF40 Terminal Designations

    3RH2131-1BF40

    Siemens 3RH2131-1BF40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 110 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2131-1BG40 AC Control Relay Siemens 3RH2131-1BG40 Terminal Designations

    3RH2131-1BG40

    Siemens 3RH2131-1BG40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 125 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2131-1BM40 AC Control Relay Siemens 3RH2131-1BM40 Terminal Designations

    3RH2131-1BM40

    Siemens 3RH2131-1BM40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 220 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2131-1BP40 AC Control Relay Siemens 3RH2131-1BP40 Terminal Designations

    3RH2131-1BP40

    Siemens 3RH2131-1BP40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 230 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2131-1BW40 AC Control Relay Siemens 3RH2131-1BW40 Terminal Designations

    3RH2131-1BW40

    Siemens 3RH2131-1BW40 10 AMP AC control relay with 3 normally open and 1 normally closed contacts and a 48 volt DC coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O...

    MSRP: $110.00
    $63.14
    Add to Cart
  • Siemens 3RH2140-1AD00 AC Control Relay Siemens 3RH2140-1AD00 Terminal Designations

    3RH2140-1AD00

    Siemens 3RH2140-1AD00 10 AMP AC control relay with 4 normally open contacts and a 42v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart
  • Siemens 3RH2140-1AF00 AC Control Relay Siemens 3RH2140-1AF00 Terminal Designations

    3RH2140-1AF00

    Siemens 3RH2140-1AF00 10 AMP AC control relay with 4 normally open contacts and a 110v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart
  • Siemens 3RH2140-1AH00 AC Control Relay Siemens 3RH2140-1AH00 Terminal Designations

    3RH2140-1AH00

    Siemens 3RH2140-1AH00 10 AMP AC control relay with 4 normally open contacts and a 48v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart
  • Siemens 3RH2140-1AM20 AC Control Relay Siemens 3RH2140-1AM20 Terminal Designations

    3RH2140-1AM20

    Siemens 3RH2140-1AM20 10 AMP AC control relay with 4 normally open contacts and a 208v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart
  • Siemens 3RH2140-1AN20 AC Control Relay Siemens 3RH2140-1AN20 Terminal Designations

    3RH2140-1AN20

    Siemens 3RH2140-1AN20 10 AMP AC control relay with 4 normally open contacts and a 220v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart
  • Siemens 3RH2140-1AP00 AC Control Relay Siemens 3RH2140-1AP00 Terminal Designations

    3RH2140-1AP00

    Siemens 3RH2140-1AP00 10 AMP AC control relay with 4 normally open contacts and a 230v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N...

    MSRP: $94.00
    $56.84
    Add to Cart