6 Zone Switching Relay
  • July 29, 2020 10:10 am
  • Arizona
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The Taco SR506-4 Switching Relay is the best choice for all your zoning needs, with advanced PowerPort Cards, external diagnostic lights, switchable priority, and contractor-friendly PC board layouts. Combined with the time-proven reliability of the families of circulators and thermostats, total system integrating is achieved.

External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.


  • 24-Volt power input or output terminal
  • Fuse protected
  • Simplified wiring
  • Compact design