• Taco Switching Relay 4 Zone with Priority and 3 Power Ports - SR504-EXP-1

    Product ID • TACSR504EXP0

  • $224.75
  • Normal Ground Shipping

Overview

Taco Switching Relay SR504-EXP-1 combines 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. The Taco SR504-EXP-1 switching relay is 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.

Optional Add-on Power Control Plug:

Boiler Reset Control - PC700

Two Stage Boiler Reset Control - PC702

Variable Speed Pump Injection Mixing Control - PC705

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Manuals & Docs

Technical Specs

Taco Switching Relay 4 Zone for Circulating Pumps Taco SR504-EXP-1 Techs and Specs

  • Zones
    4 Zones with Priority (Priority capability for domestic hot water)
  • Add-on Power Control Plug
    1
  • Add-on PowerPort Card Slots
    3
  • Allows Circulator and Boiler to be switched on at the same time
    Yes
  • Double Pole
    Single Throw (DPST)
  • Connects directly to thermostat
    Yes
  • Switches
    110 volts or 24 volts
  • LED Status Lights
    Yes
  • Maximum Combined Load
    15 amps
  • UL and CSA approved
    Yes
  • Warranty
    Extended 3 year
  • Manafacrtured Orgin
    USA
  • Transformer Voltage
    120 volts
  • Size
    10 1/4 Inches Width by 6 3/4 Inches Height by 2 3/4 Inches Depth

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