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Switching Relays

  • 1 Zone Switching Relay Product Image
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    1 Zone Switching Relay SR501-4 1 Zone Switching Relay
    SKU: SR501-4
    Brand: Taco
    (118)
    $60.00 each
    221
    Fri, Jan 31
    1,648
    QtyArrives
    221 Fri, Jan 31
    1,427 Tue, Feb 4 – Wed, Feb 5
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  • 2 Zone Switching Relay Product Image
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    2 Zone Switching Relay SR502-4 2 Zone Switching Relay
    SKU: SR502-4
    Brand: Taco
    (20)
    $142.00 each
    123
    Fri, Jan 31
    1,257
    QtyArrives
    123 Fri, Jan 31
    1,134 Tue, Feb 4 – Wed, Feb 5
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  • 1 Zone Switching Relay, High Current Capacity Product Image
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    1 Zone Switching Relay, High Current Capacity SR501-HC-4 1 Zone Switching Relay, High Current Capacity
    SKU: SR501-HC-4
    Brand: Taco
    (118)
    $85.79 each
    5
    Fri, Jan 31
    15
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    5 Fri, Jan 31
    10 Tue, Feb 4 – Wed, Feb 5
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  • 3 Zone Switching Relay Product Image
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    3 Zone Switching Relay SR503-4 3 Zone Switching Relay
    SKU: SR503-4
    Brand: Taco
    (34)
    $150.00 each
    135
    Fri, Jan 31
    931
    QtyArrives
    135 Fri, Jan 31
    796 Tue, Feb 4 – Wed, Feb 5
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  • 4 Zone Switching Relay Product Image
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    4 Zone Switching Relay SR504-4 4 Zone Switching Relay
    SKU: SR504-4
    Brand: Taco
    (118)
    $182.00 each
    59
    Fri, Jan 31
    1,052
    QtyArrives
    59 Fri, Jan 31
    993 Tue, Feb 4 – Wed, Feb 5
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  • 6 Zone Switching Relay Product Image
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    6 Zone Switching Relay SR506-4 6 Zone Switching Relay
    SKU: SR506-4
    Brand: Taco
    (118)
    $240.00 each
    11
    Fri, Jan 31
    404
    QtyArrives
    11 Fri, Jan 31
    393 Tue, Feb 4 – Wed, Feb 5
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  • 3 Zone Switching Relay<br>w/ Priority Product Image
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    3 Zone Switching Relay w/ Priority SR503-EXP-4 3 Zone Switching Relay w/ Priority
    SKU: SR503-EXP-4
    Brand: Taco
    (26)
    $158.00 each
    30
    Fri, Jan 31
    159
    QtyArrives
    30 Fri, Jan 31
    129 Tue, Feb 4 – Wed, Feb 5
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  • 1 Zone Switching Relay Product Image
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    1 Zone Switching Relay SR501-EXP-4 1 Zone Switching Relay
    SKU: SR501-EXP-4
    Brand: Taco
    (26)
    $114.99 each
    5
    Fri, Jan 31
    36
    QtyArrives
    5 Fri, Jan 31
    31 Tue, Feb 4 – Wed, Feb 5
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  • 4 Zone Switching Relay<br>w/ Priority Product Image
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    4 Zone Switching Relay w/ Priority SR504-EXP-4 4 Zone Switching Relay w/ Priority
    SKU: SR504-EXP-4
    Brand: Taco
    (26)
    $190.00 each
    40
    Fri, Jan 31
    152
    QtyArrives
    40 Fri, Jan 31
    112 Tue, Feb 4 – Wed, Feb 5
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  • 6 Zone Switching Relay<br>w/ Priority Product Image
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    6 Zone Switching Relay w/ Priority SR506-EXP-4 6 Zone Switching Relay w/ Priority
    SKU: SR506-EXP-4
    Brand: Taco
    (12)
    $248.00 each
    17
    Fri, Jan 31
    115
    QtyArrives
    17 Fri, Jan 31
    98 Tue, Feb 4 – Wed, Feb 5
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  • FuelMizer SR501-OR-4 Switching Relay with Outdoor Reset Product Image
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    FuelMizer SR501-OR-4 Switching Relay with Outdoor Reset SR501-OR-4 FuelMizer SR501-OR-4 Switching Relay with Outdoor Reset
    SKU: SR501-OR-4
    Brand: Taco
    (6)
    $145.99 each
    5
    Fri, Jan 31
    20
    QtyArrives
    5 Fri, Jan 31
    15 Tue, Feb 4 – Wed, Feb 5
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  • 24v Replacement Relay Product Image
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    24v Replacement Relay SR024-001RP 24v Replacement Relay
    SKU: SR024-001RP
    Brand: Taco
    (6)
    $23.99 each
    15
    Fri, Jan 31
    117
    QtyArrives
    15 Fri, Jan 31
    102 Tue, Feb 4 – Wed, Feb 5
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  • 120v Replacement Relay Product Image
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    120v Replacement Relay SR120-001RP 120v Replacement Relay
    SKU: SR120-001RP
    Brand: Taco
    (1)
    $22.99 each
    8
    Fri, Jan 31
    49
    QtyArrives
    8 Fri, Jan 31
    41 Tue, Feb 4 – Wed, Feb 5
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  • Taco Boiler Reset Control Product Image
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    Taco Boiler Reset Control PC700-2 Taco Boiler Reset Control
    SKU: PC700-2
    Brand: Taco
    (3)
    $227.99 each
    3
    Fri, Jan 31
    11
    QtyArrives
    3 Fri, Jan 31
    8 Tue, Feb 4 – Wed, Feb 5
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  • Taco Boiler Reset Control 2-Stage Product Image
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    Taco Boiler Reset Control 2-Stage PC702-1 Taco Boiler Reset Control 2-Stage
    SKU: PC702-1
    Brand: Taco
    (1)
    $285.99 each
    2
    Fri, Jan 31
    9
    QtyArrives
    2 Fri, Jan 31
    7 Tue, Feb 4 – Wed, Feb 5
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  • Taco PC705 Variable Speed Pump Control Product Image
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    Taco PC705 Variable Speed Pump Control PC705-2 Taco PC705 Variable Speed Pump Control
    SKU: PC705-2
    Brand: Taco
    (2)
    $322.99 each
    3
    Fri, Jan 31
    5
    QtyArrives
    3 Fri, Jan 31
    2 Tue, Feb 4 – Wed, Feb 5
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  • Replacement Fuse - <br>1 Amp (10 Pack) Product Image
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    Replacement Fuse - 1 Amp (10 Pack) SR1A-001RP Replacement Fuse - 1 Amp (10 Pack)
    SKU: SR1A-001RP
    Brand: Taco
    $15.99 each
    7
    Fri, Jan 31
    18
    QtyArrives
    7 Fri, Jan 31
    11 Tue, Feb 4 – Wed, Feb 5
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  • Replacement Fuse - <br>5 Amp (10 Pack) Product Image
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    Replacement Fuse - 5 Amp (10 Pack) SR5A-005RP Replacement Fuse - 5 Amp (10 Pack)
    SKU: SR5A-005RP
    Brand: Taco
    (2)
    $13.69 each
    26
    Fri, Jan 31
    80
    QtyArrives
    26 Fri, Jan 31
    54 Tue, Feb 4 – Wed, Feb 5
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  • Replacement Fuse - <br>6 Amp (10 Pack) Product Image
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    Replacement Fuse - 6 Amp (10 Pack) SR6A-001RP Replacement Fuse - 6 Amp (10 Pack)
    SKU: SR6A-001RP
    Brand: Taco
    (4)
    $17.99 each
    14
    Fri, Jan 31
    30
    QtyArrives
    14 Fri, Jan 31
    16 Tue, Feb 4 – Wed, Feb 5
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  • 1 Zone 120V Switching Relay w/ Internal Transformer, 1 SPST Product Image
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    1 Zone 120V Switching Relay w/ Internal Transformer, 1 SPST RA89A1074 1 Zone 120V Switching Relay w/ Internal Transformer, 1 SPST
    SKU: RA89A1074
    Brand: Honeywell
    (12)
    $60.99 each
    168
    Fri, Jan 31
    168
    QtyArrives
    168 Fri, Jan 31
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  • Switching Relay w/ Internal Transformer DPST Line Voltage Relays Product Image
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    Switching Relay w/ Internal Transformer DPST Line Voltage Relays R845A1030 Switching Relay w/ Internal Transformer DPST Line Voltage Relays
    SKU: R845A1030
    Brand: Honeywell
    (9)
    $77.99 each
    169
    Fri, Jan 31
    169
    QtyArrives
    169 Fri, Jan 31
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  • Universal Switching Relay w/ Internal Transformer Product Image
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    Universal Switching Relay w/ Internal Transformer R8845U1003 Universal Switching Relay w/ Internal Transformer
    SKU: R8845U1003
    Brand: Honeywell
    (17)
    $58.99 each
    329
    Fri, Jan 31
    329
    QtyArrives
    329 Fri, Jan 31
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  • 2 Zone 120V Switching Relay with DPST switching Product Image
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    2 Zone 120V Switching Relay with DPST switching RA832A1066 2 Zone 120V Switching Relay with DPST switching
    SKU: RA832A1066
    Brand: Honeywell
    (27)
    $75.89 each
    478
    Fri, Jan 31
    478
    QtyArrives
    478 Fri, Jan 31
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  • 120V, 60 Hz Switching Relay with SPDT switching Product Image
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    120V, 60 Hz Switching Relay with SPDT switching RA889A1001 120V, 60 Hz Switching Relay with SPDT switching
    SKU: RA889A1001
    Brand: Honeywell
    (7)
    $54.89 each
    34
    Fri, Jan 31
    34
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    34 Fri, Jan 31
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Resources

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  • Switching relays are used to control the flow of water in a heating system by monitoring temperatures and adjusting boiler water temperature to match the demand. They are used in coordination with circulator pumps and programmable thermostats to control zoning in a hydronic heating system. This makes them ideal for indirect water heaters and priority zoning applications. They maximize efficiency and reduce fuel usage, which saves money. In addition, they provide intermediate switching of a line voltage device from a low voltage controller. Switching relays are available in one to six zone models, and if additional zones are required expandable models provide the ability to expand up to 20 zones.

    We offer a wide selection of Taco, Honeywell , Argo, and Bell & Gossett switching relays for residential and light commercial applications.

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