Robertshaw 5300-100 Thermostat

The Robertshaw 5300-100 is an electric water heating thermostat engineered for high-demand applications including commercial water heaters, sterilization equipment, and industrial baths. As a unipolarly single-throw (SPST) control, this 5300 series thermostat operates with a DPST (Double Pole Single Throw) configuration, breaking both sides of the line for a complete electrical disconnect when the setpoint is met. It features a broad temperature range of 140°F to 194°F, making it a reliable drop-in replacement for the E-series controls. The assembly utilizes 25A 250V AC resistive switching capacity and includes a 36-inch capillary with a copper bulb for precise thermal feedback. Designed with heavy-duty construction, the manual reset limit control ensures the system remains deactivated until manually cleared by a technician, providing a critical mechanical fail-safe for high-limit scenarios. This Robertshaw electric thermostat is the standard for maintaining tight thermal tolerances in 120V to 480V circuits.

• Direct OEM Compatibility: Serves as a precise replacement for the 5300-032 and various E-series thermostats across multiple equipment brands.
• Heavy-Duty Switching: Rated for up to 30A at 120V/277V AC and 25A at 480V AC, handling high-amperage resistive loads without contact pitting.
• Manual Reset Mechanism: Provides positive lockout of the heating circuit when high-limit thresholds are exceeded, preventing equipment damage.
• Robust Thermal Sensing: Includes a 1/4-inch diameter nickel-plated copper bulb for fast response times and chemical resistance in aqueous environments.
• Installation Versatility: The 36-inch capillary length allows for flexible mounting configurations in cramped commercial control cabinets.

Is the Robertshaw 5300-100 compatible with 480V systems?
Yes, this control is rated for 480V AC applications with a 25A resistive load rating, making it suitable for industrial three-phase heating systems when used as a branch circuit limiter.

What is the difference between this and an automatic reset thermostat?
The Robertshaw 5300-100 requires a physical manual reset after the high-limit temperature is triggered. This ensures that a technician inspects the system for the cause of the overheat before the heating cycle resumes.

Can this thermostat be used in oil or grease applications?
While designed primarily for water heating, the copper bulb and capillary are robust; however, you must verify the 194°F limit aligns with the flash point and operational requirements of the specific medium.

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.