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
(108 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 you to completely customize your system. External indicator lights give you instant diagnostic feedback, making service calls or new installation start-ups a snap. All switching relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, switching relays can be expanded up to 20 zones with priority. Any expandable switching relay can also interface with the Boiler Reset Control and Injection Mixing Add-On Power Controls. Mix-and-match as needed to customize the 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
Note: Image may not represent actual product

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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