Schneider Electric (Erie) 680-243-6 Switch

The Schneider Electric (Erie) 680-243-6 Switch is a heavy-duty seasonal changeover snap-acting SPDT strap-on switch engineered for precise HVAC seasonal changeover. This unit automatically transitions a thermostat from heating to cooling modes based on supply water temperature, ensuring optimized system efficiency in 2-pipe fan coil applications. Designed to strap on to 5/8" or 7/8" O.D. copper tubing or iron pipe, the Erie 680-243-6 features a fixed setpoint that opens at 83°F and closes at 60°F. This specific model includes a conduit connection and 36-inch leads for flexible installation in low or line voltage environments (up to 240 VAC). The snap-acting mechanism prevents arcing and ensures a clean electrical break, making it a reliable choice for contractors managing hydronic systems. By automating the heating cooling transition, this SPDT changeover switch reduces manual intervention and protects equipment from operating in the wrong seasonal mode.

• Effortless System Automation: Automatically triggers thermostat changeover, eliminating the need for manual seasonal adjustments in hydronic HVAC setups.
• Contractor-Friendly Installation: Includes a spring clip for fast mounting on various pipe diameters and 36" color-coded leads with a built-in conduit connection for protected wiring.
• Universal Compatibility: Rated for both low voltage (24 VAC) and line voltage (120/240 VAC) applications, providing versatility across different controller brands.
• Industrial-Grade Reliability: The snap-acting SPDT design ensures rapid contact transfer, reducing wear and improving the longevity of the electrical circuit.

How do I wire the Erie 680-243-6 for a 2-pipe fan coil system?
The SPDT configuration allows you to wire the Common (C) terminal to the thermostat's changeover input. Depending on the temperature, the switch will close the circuit to either the heating or cooling terminal, typically switching at the 60°F and 83°F thresholds.

What is the difference between the 680-243-6 and the 680-243-5?
The primary difference is the conduit connection. The 680-243-6 includes an integrated conduit hub for meeting local electrical codes in commercial applications, whereas the 680-243-5 typically does not.

Can this switch be used on 3/4" iron pipe?
Yes, the included spring-clip system is designed to accommodate 5/8" and 7/8" O.D. surfaces, which fits standard 1/2" and 3/4" nominal copper tubing or equivalent iron pipe dimensions common in hydronic changeover projects.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.