Caleffi ZVR103 Relay 326058-757 organized interface

organized interface

" this switch is the primary diagnostic point

Thermal Protection: Internal overload protection prevents winding burnout during peak summer operation

For contractors performing field conversions or maintenance on VGD series gas valves

Built with a die-cast aluminum housing and specialized wetted materials

Caleffi ZVR103 Relay 326058-757 organized interfaceThe Caleffi ZVR103 is a high performance 3 zone valve relay designed for professional contractors managing multi zone hydronic heating systems. Engineered for seamless integration, the ZVR103 serves as a direct technical replacement for the HPZC103, providing a robust interface between low voltage 2, 3, and 4 wire thermostats and boiler equipment. This hydronic zone valve controller features a standard 40 VA transformer, which is field expandable to