White-Rodgers 755-50 Thermostat Control

The White-Rodgers 755-50 is a heavy-duty electric water heater thermostat and high-limit control designed for precision surface-mount temperature sensing. As a technician, you know the importance of a reliable manual reset in dual-function controls. This unit integrates a normally closed SPST temperature switch with a fixed 170°F DPST high limit safety switch to ensure system protection against overheating. It operates with a variable range of 110°F to 170°F and features a mechanical snap-action contact for clean opening and closing, reducing arc wear. Whether you are performing a water heater thermostat replacement on a residential storage tank or a commercial unit, the 755-50 provides high electrical capacity (up to 40 amps for the limit control) to handle resistive loads safely. This universal limit and thermostat combination is the industry standard for maintaining a 5 to 15-degree differential, ensuring consistent thermal performance without the nuisance tripping often found in sub-par HVAC replacement parts.

• Dual-Function Reliability: Combines adjustable 110/170°F temperature control with a fixed 170°F high-limit safety cutoff.
• Heavy-Duty Switching: Equipped with snap-action contacts and high electrical capacity to support standard residential and light commercial resistive loads.
• Precise Regulation: Maintains a 5°F to 15°F differential to prevent rapid cycling and improve the longevity of your heating elements.
• Universal Compatibility: Designed for surface-mount installation on typical electric water heater storage tanks.
• Integrated Safety: Features a manual reset button to provide positive disconnect in over-temperature scenarios.

What should I do if the red button keeps tripping?
A tripping high-limit switch usually indicates the thermostat has stuck closed or the heating element has shorted to ground. Check for continuity and verify that the temperature sensing is accurate before resetting.

Can this be used on a single-element or dual-element heater?
The 755-50 is typically used as the upper control in a two-element system or as the primary control in a single-element series circuit where a full power disconnect is required.

Is the temperature range adjustable?
Yes, the temperature control is variable from 110°F to 170°F. The high-limit safety is fixed at 170°F and requires a manual reset.

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.