Free Shipping on Orders Over $200*
  • Caleffi Switching Relay - ZSR101

    - 1 Zone - 110 Volts - For Circulating Pumps

    Product ID • ZSR101000000

  • $67.75
  • Quantity:
  • Free Shipping Eligible


Caleffi Switching Relay ZSR101 Single zone switching relay operated by low voltage thermostats.

Two outputs (Relay 1 and Relay 2) for operating 120 VAC pump with boiler enable, or two devices without boiler enable.

The Caleffi ZSR101 single zone switching relay is operated by low voltage thermostats. The ZSR101 single zone switching relay incorporates Power In, Relay 1 and Relay 2 connection terminals to provide a convenient and cost effective way to control a circulator and a boiler operating control in a single zone hydronic heating system. The ZSR101 single zone switching relay saves hours in installation time and provides a clean and professional installation.

Return Policy | Shipping Policy

Manuals & Docs

Technical Specs

Caleffi Switching Relay 1 Zone for Circulating Pumps Caleffi ZSR101 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
    5 amps
  • UL and CSA approved
  • Warranty
    Extended 3 year
  • Size
    5 3/8 Inches Width by 4 5/8 Inches Height by 2 5/8 Inches Depth
  • Weight/start>1.1 Pounds

Info & Links