ZSR103 | Zone Pump Relay 3 Zone | Caleffi

Caleffi Zone Pump Relay (ZSR103) The Caleffi ZSR103 Zone Pump Relay provides precise control and sequencing for up to three zones in hydronic heating and cooling systems. Its compact design and easy-to-use interface make it ideal for both residential and commercial applications. Key Features: - Controls up to three zones independently - Adjustable time delays for pump sequencing - LED indicators for clear status monitoring - Built-in dry contacts for remote alarm or control - Versatile power input options (24VAC/VDC or 120-240VAC) Benefits: - Optimizes system efficiency by minimizing pump run times - Prevents pump short cycling and premature failure - Provides remote monitoring and control capabilities - Adaptable to a wide range of system configurations Applications: - Hydronic heating systems - Hydronic cooling systems - Geothermal systems - Solar thermal systems Technical Specifications: - Number of Zones: 3 - Power Supply: 24VAC/VDC or 120-240VAC - Output: Dry contacts (SPDT) - Dimensions: 4.5" x 3.5" x 2.25" Our HVAC supply store offers the best prices and fast shipping on the Caleffi ZSR103 Zone Pump Relay. Order yours today and experience the benefits of efficient and reliable zone control in your hydronic system!