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Taco Switching Relays allow you to completely customize your system. Whether you are using basic priority switching, add-on power controls, or Taco Plug-In PowerPort Cards, tailoring the system has never been easier!
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. With the exclusive Taco PowerPort Plug-In Cards, you can easily add such features as post purge, priority protection and pump exercise. 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.
External Indicator Lights
Fully Enclosed Snap-Out Relays
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
Taco SR501 Switching Relay Submittal Data
Taco SR501 Switching Relay Instruction Sheet
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