Home Heating Supplies Switching Relays

Switching Relays

We carry a complete selection of enhanced series switching relays by Taco and a wide range of standard and universal hydronic switching relays by Honeywell.

15 products
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Product Description Part# / Brand Qty Unit Price
Switching Relay, DPST

RA832A1066
Honeywell
 
x1
$64.95 / each
x4
$251.80 / box
($62.95 / each)
Switching Relay, SPST

RA89A1074
Honeywell
 
x1
$51.95 / each
1-Zone Switching Relay

SR501-4
Taco
 
x1
$49.75 / each
1-Zone Switching Relay, Expandable

Temporary Out of Stock

SR501-EXP-4
Taco
x1
$102.95 / each
2-Zone Switching Relay w/ Priority

SR502-4
Taco
x1
$112.95 / each
3-Zone Switching Relay w/ Priority

SR503-4
Taco
 
x1
$121.95 / each
3-Zone Switching Relay w/ Priority, Expandable

SR503-EXP-4
Taco
x1
$149.50 / each
4-Zone Switching Relay w/ Priority

SR504-4
Taco
x1
$168.95 / each
4-Zone Switching Relay w/ Priority, Expandable

SR504-EXP-4
Taco
x1
$179.95 / each
6-Zone Switching Relay w/ Priority

SR506-4
Taco
 
x1
$198.95 / each
6-Zone Switching Relay w/ Priority, Expandable

SR506-EXP-4
Taco
x1
$212.95 / each
Universal Replacement Relay

SR501-845RP
Taco
x1
$39.95 / each
Switching Relay, DPST

Temporary Out of Stock

R845A1030
Honeywell
x1
$61.25 / each
Universal Switching Relay, SPST

R8845U1003
Honeywell
x1
$46.95 / each
Switching Relay, SPDT/SPST

RA889A1001
Honeywell
x1
$46.95 / each
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About Switching Relays

Taco line of switching relays are used in hydronic baseboard/radiator and radiant floor heating applications where zoning with circulators is required. These relays come in 1 through 6-zone models and select (EXP) models can be combined to cover up to 120 zones. SR series switching relays work with virtually any 24V thermostats and are compatible with all major circulator pump brands, including Taco, Grundfos, B&G, Wilo, Armstrong and others.
Taco switching relay allows for simultaneous control of the boiler and circulators via the room thermostat(s). For 1-zone applications, a single thermostat can be wired to control multiple circulators. For 2 or more zones, each thermostat can control a dedicated pump or set of pumps.

Honeywell switching relays available are standard and universal hydronic relays of DPST, SPST or SPDT type. These modules are used for intermittent switching of line or low voltage devices from a line or low-voltage controller with model-specific features.

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