Robertshaw 5300-159 Thermostat

The Robertshaw 5300-159 is a high-limit DPST (Double Pole Single Throw) thermostat engineered for precise temperature regulation in demanding commercial cooking and industrial environments. This 5300 series energy cutoff operates within a fixed range of 170°F to 475°F, providing a critical safety layer for deep fryers, ovens, and steam equipment. It features a 72-inch stainless steel capillary paired with a 1/4-inch by 4-7/8-inch nickel-plated bulb, ensuring rapid thermal response and resistance to corrosive grease or high-moisture settings. The Robertshaw Hi-Limit Control is designed as an "open on rise" mechanism, breaking the electrical circuit once the high-temperature threshold is reached to prevent equipment damage or oil flash fires. Professional technicians value the 5300-159 for its mechanical reliability and its 30 Amp, 250V AC rating, making it a rugged replacement for OEM safety switches in various high-output appliances.

Key Technical Benefits

• High Amperage Capacity: Rated for up to 30 Amps at 250V AC, suitable for high-draw heating elements.
• Mechanical Precision: Uses a snap-action switch for instantaneous circuit interruption at the set limit.
• Long-Reach Capillary: The 72-inch stainless steel capillary allows for flexible mounting configurations in complex chassis layouts.
• Durable Construction: Features a nickel-plated bulb to withstand scaling and chemical exposure in commercial kitchens.
• Safety Compliance: Designed as an EHCO (Energy Hi-Cut Off) to meet stringent fire safety standards for commercial food service.

Common Installation & Operation Questions

How do I reset the Robertshaw 5300-159 after it trips?
This is a manual reset control. Once the temperature drops below the high-limit threshold, the technician must manually depress the reset button to restore the circuit.

Can this thermostat be used in place of a standard temperature controller?
No, this is a safety device intended to limit maximum temperature. It should be used in series with a primary temperature controller to prevent thermal runaway.

What causes the capillary to fail on these high-limit switches?
Mechanical failure often results from "kinking" the capillary during installation or vibration-induced fatigue. Ensure a minimum bend radius is maintained during routing.

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.