Robertshaw 5600-311 Thermostat

The Robertshaw 5600-311 Thermostat is a professional-grade upper electric water heater thermostat designed as a direct replacement for domestic and commercial units. This 5600 Series control integrates automatic cycling temperature regulation and a manual reset high limit safety switch within a single, 3-3/4-inch compact housing. The snap-action mechanism provides rapid response to temperature fluctuations, ensuring consistent 120°F to 160°F (+/- 5°F) delivery while the integrated ECO limit triggers at 190°F to prevent overheating. Engineered for high-demand environments, it handles up to 30 Amps at 120-250V AC. The SPDT/DPST high limit switch configuration allows for precise control of the upper heating element, prioritizing initial tank recovery. This surface mount water heater control features easy-access screw terminals for clean field wiring and a secure clamp-to-tank design that ensures accurate thermal sensing. Whether you are performing a standard maintenance override or a full water heater thermostat replacement, this heavy-duty component provides the electrical reliability required for 4500W to 7200W heating circuits.

• Dual-Function Control: Combines adjustable temperature sensing and high-limit safety protection in one unit.
• Universal Compatibility: Replaces common industry models including A.O. Smith 9001954015, Camco 211, and Rheem AP-10161.
• High Amperage Rating: Rated for 30A @ 120-250V AC and 22A @ 277V AC, suitable for high-wattage residential and commercial elements.
• Snap Action Operation: High-speed contact separation minimizes arcing and extends the life of the internal switch gear.
• Integrated Safety: Features a 190°F manual reset high-limit to protect the tank against runaway heating cycles.

Is the Robertshaw 5600-311 used for the top or bottom element?
This is an upper water heater thermostat. It is designed to control the primary heating element and the high-limit safety circuit. It should not be used in the lower position which typically requires a single-pole thermostat without a reset button.

How do I know if the high-limit switch has tripped?
If you have no hot water, check the red reset button. If it has popped out, the limit has tripped due to excessive temperature (above 190°F). Ensure the tank is full and the heating elements are not shorted before resetting.

What temperature should I set on the 5600-311?
Contractors typically recommend a setting of 120°F to balance energy efficiency and bacteria control. Note that both upper and lower thermostats should be set to the same temperature to maintain a uniform tank profile.

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.