Taco SR503-EXP-4 Switching Relay 3 Zone Expandable 120 VAC

Product Description

The Taco SR503-EXP-4 is a highly efficient, expandable switching relay designed for HVAC applications. Engineered by Taco, this device facilitates the control of up to three heating zones with the option to expand further. Its compatibility with multiple thermostat types alongside a user-friendly PC board design makes it ideal for various installation scenarios.

• Supports 3 heating zones, expandable for larger systems.
• Equipped with external indicator lights for quick diagnostic feedback.
• UL and CSA approved, ensuring reliability and safety in operations.

Product Highlights

Advanced features of the SR503-EXP-4 include switchable priority, simplified wiring, and plug-in connections which enhance the setup process and diagnostics. The device's compact design and fuse protection are ideal for tight spaces while ensuring durability.

Product Information

Standard Information

• Brand: Taco
• MPN: SR503-EXP-4

Technical Specifications

• Power: 120 VAC
• Amperage: 1 amp end switch connections
• Certification: UL Listed, CSA Approved
• Features: External indicator lights, switchable priority, universal thermostat compatibility