Taco SR504-EXP-4 4 Zone Switching Relay Expandable Trending

The Taco SR504-EXP-4 is a versatile and expandable 4-zone switching relay designed for optimal performance in hydronic heating and cooling systems. Engineered by Taco, this relay facilitates easy and efficient management of multiple heating zones, enhancing system functionality.

• Integrates with up-to 20 zones using optional PowerPort Cards and Add-on Power Controls.
• Features external indicator lights for quick diagnostic feedback and simplified wiring for easy installation.
• UL and CSA listed, ensuring compliance with safety standards.

Product Highlights

This Taco switching relay is not only compact but also features a fully enclosed snap-out design that makes service calls or installations straightforward. It is equipped with universal thermostat compatibility, making it a versatile choice for various HVAC applications.

Product Information

Standard Information

• Brand: Taco
• Model: SR504-EXP-4

Technical Specifications

• Dimensions: Width 10.25 inches, Depth 2.75 inches, Height 6.75 inches
• Weight: 3 pounds
• Power Input/Output: 24 Volt
• Max Amperage: 20
• Installation: Features screw holes for mounting, includes instruction sheet
• Compliance: UL and CSA approved