Ranco A30-310 Refrigeration Control

The Ranco A30-310 Refrigeration Control is a heavy-duty, constant differential temperature control engineered for demanding commercial applications, specifically within ice machines, beverage coolers, and commercial freezers. Built with a laser-welded stainless steel bellows, this SPST (Single Pole Single Throw) switch provides reliable open-on-low-temperature (cut-out) performance. With a professional-grade 36-inch capillary tube, this adaptable cold control ensures precise vapor-filled sensing for accurate cycling. It features a technical temperature range of -14°F to 6°F and a fixed 20°F differential, facilitating stable system pressures. Rated for 20 Amps at 240V AC, the A30-310 includes a break-off shaft, dial knob, and a sturdy mounting bracket to streamline field replacements. Designed to replace various OEM controls, this unit integrates high-amperage contacts and 1/4 inch quick-connect terminals, making it the preferred HVACR temperature switch for technicians optimizing refrigeration cycle efficiency and equipment uptime.

• Precise Constant Differential: Maintains a 20°F differential for consistent compressor cycling and food safety compliance.
• Versatile Application: Ideal for ice machine controls, beverage dispensers, and commercial walk-in units.
• Durable Construction: High-amperage contacts handle heavy inductive loads across 120/240V systems.
• Flexible Mounting: Includes a 36" capillary and break-off shaft for fast installation in tight evaporator housings.
• Reliable Switching: Features an SPST switch that opens on temperature drop to prevent evaporator freeze-ups.

How do I adjust the cut-in and cut-out settings on the A30-310?
The Ranco A30-310 operates with a constant differential. You adjust the range screw to the desired cut-out point; the cut-in temperature will naturally remain 20°F above that setting. Always use a calibrated thermometer and manifold gauges to verify the cycle during commissioning.

Is the A30-310 compatible with 120V and 240V systems?
Yes, this control is rated for 20 full load amps at both 120V and 240V AC, making it a universal choice for most commercial refrigeration and ice machine power configurations.

Can this control be used for heating applications?
No, this is a "cold control" with an SPST switch that opens on temperature drop. For heating or high-temperature cutout applications, you would require a control that closes on drop or a different series of Ranco thermostats.

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.