Taco 3-Zone Switching Relay with Priority, SR503-4

The SR503-4 from Taco is a 3-Zone Switching Relay with Priority. It combines clearly labeled PC board layout with advanced features that allow for total system customization. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. Taco SR503 switching relays are UL and CSA listed, use standard “ice cube” replaceable relays and are compatible with conventional and programmable thermostats.

Features:

• External Indicator Lights;
• Switchable Priority;
• Simplified Wiring;
• Fully Enclosed Snap-Out Relays;
• Compact Design;
• Fuse Protected;
• 100% Factory Tested;
• Isolated End Switch;
• Contractor Friendly PC Board Layout;
• Universal Thermostat Compatibility;
• UL and CSA Approved;
• 24 Volt Power Input or Output Terminal;
• Made in the USA;

Technical Specifications:

• Zones: 3;
• Power: 120VAC;
• Max combined load: 15.0 AMPs;
• Dimensions: 10.25" wide x 6.75" high x 2.75" deep.

Warranty:

• Extended 3 Year Warranty;