Taco SR503-2, 3 Zone Switching Relay w/ Priority

Taco SR503 Switching Relay 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;
Extended 3 Year Warranty;
Made in the US;

Specs:

Zones: 3;

Power: 120VAC;

Max combined load: 15.0 AMPs;

Dimensions: 10.25" wide x 6.75" high x 2.75" deep.

Documentation:

Taco SR503 Switching Relay Brochure (pdf)

Taco SR503 Switching Relay Submittal Data (pdf)

Taco SR503 Switching Relay Instruction Sheet (pdf)