The Caleffi ZSR101 Z-one™ Relay is a sophisticated control designed to operate with low voltage thermostats. Its versatility makes it an ideal choice for managing single zone heating systems, ensuring efficient and precise control.

This single relay control comes equipped with two outputs, capable of operating a 120 VAC pump with boiler enable or two separate 120 VAC devices without boiler enable. This flexibility allows for a wide range of applications, catering to different heating system requirements.

Featuring rear knockouts for straightforward 4x4 junction box mounting, the ZSR101 is designed for ease of installation. This user-friendly approach makes it a convenient choice for both professional installers and DIY enthusiasts.

To simplify setup, the ZSR101 includes a pre-installed jumper for pump operation. This feature reduces installation time and ensures that your system is up and running with minimal hassle.

With a 10 amp total load rating, this switching relay can handle significant demand, making it suitable for a variety of residential and light commercial heating systems.

Single zone switching relay operated by low voltage thermostats

Two 120 VAC outputs for versatile application

Rear knockouts for easy junction box mounting

Convenient pre-installed jumper for pump operation

10 amp total load rating