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  • Caleffi Switching Relay - ZSR103

    - 3 Zones - 110 Volts - For Circulating Pumps

    Product ID • ZSR103000000

  • $158.75
  • Quantity:
  • Free Shipping Eligible


Caleffi Switching Relay ZSR103 - 3 zones switching relay operated by low voltage thermostat  or other low voltage controllers having a switching action.

The Caleffi ZSR103 3 zone switching relay is operated by low voltage thermostats. The ZSR103 3 zones switching relay incorporates Power. It has LED indicators to provide functional status and easy system troubleshooting. The ZSR103 3 zones switching relay saves hours in installation time and provides a clean and professional installation.

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Technical Specs

Caleffi Switching Relay for Circulating Pumps Caleffi ZSR103 Techs and Specs

  • Zones
  • Allows Circulator and Boiler to be switched on at the same time
  • Double Pole
    Double Throw (DPDT)
  • Connects directly to thermostat
  • Switches
    110 volts or 24 volts
  • LED Status Lights
  • Maximum Combined Load
    12 amps
  • UL and CSA approved
  • Warranty
    Extended 3 year
  • Size
    9 1/4 Inches Width by 11 Inches Height by 3 Inches Depth
  • Weight/start>2.0 Pounds

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