6 Zone Switching Relay w/ Priority Zoom
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6 Zone Switching Relay w/ Priority


Brand: Taco

Qty Price
/ each
$421.70 / box (2 units x $210.85)
In Stock! Ships in 24-48 Hours
(52 Available)



Power Control Plugs: 1
Application: Zoning
Power Method: 120 VAC Input
120 VAC

Description for Taco SR506-EXP-4

Taco Switching Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority switching or the advanced features of the -EXP controls, the job is made easy. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. All switching relays are UL and CSA listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats.

Whether you want to expand up to 20 zones or utilize the advanced features of the PowerPort Cards and Add-on Power Controls, Taco -EXP controls allow for simple integration of advanced features. Plug in any combination of cards and controls to optimize the operation of any system.

Features include:

  • External Indicator Lights
  • Switchable Priority
  • Simplified Wiring
  • Fully Enclosed Snap-Out Relays
  • Compact Design
  • Fuse Protected
  • 100% Factory Tested
  • Isolated End Switch
  • Contractor Friendly PC Board Layout
  • Universal Thermostat Compatibility
  • UL and CSA Approved
  • 24 Volt Power Input or Output Terminal
  • Extended 3 Year Warranty
  • Made in the USA

Additional -EXP Features
  • Plug-in PowerPort Card Slots
  • Add-on Power Control Plug
  • Expandable to 20 Zones
  • Interface with -EXP Zone Valve Controls

6 Zone Switching Relay w/ Priority


by PowerReviews
Taco6 Zone Switching Relay w/ Priority

(based on 1 review)

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Reviewed by 1 customer

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Taco Zone controller has problem

By Chaz

from Kalispell Mt

Verified Buyer



      Best Uses

        Comments about 6 Zone Switching Relay w/ Priority:

        The transformer is undersized to fit in the box. Mine went out so I bought another transformer --I guess industrial grade one and put it in...working well for the past 3 weeks.

        • Was this a gift?:
        • No

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