Ranco A30-3725 Differential Control

The Ranco A30-3725 Differential Control is a versatile, constant differential temperature switch engineered specifically for high-demand commercial refrigeration parts applications. Featuring a 60-inch capillary and a 3/8" diameter sensing bulb, this SPST cold control provides precise mechanical switching for ice machines, reach-in coolers, and beverage dispensers. The unit operates with a fixed 19°F differential, maintaining a normal off-setpoint of 24°F and a normal on-setpoint of 43°F. Built with laser-welded stainless steel bellows and high-amperage contacts, the A30-3725 is a rugged direct replacement for Glenco/Star and other major OEM refrigerator controls.

For contractors in the field, this universal refrigeration thermostat simplifies truck stock. The break-off shaft design and included mounting bracket allow for fast adaptation to various cabinet depths and dial configurations. With a temperature range of 16°F to 50°F, it is a reliable solution for walk-in cooler temperature control and equipment governing compressor cycles. Ensure the capillary is secured with a vibration coil and a minimum 2-inch loop to prevent work-hardening and premature failure in high-vibration environments.

• Universal Compatibility: Replaces numerous OEM cold controls with a break-off shaft and adaptable mounting.
• Corrosion Resistance: Laser-welded stainless steel bellows provide longevity in humid refrigeration environments.
• Wide Sensing Range: 16°F to 50°F operating range supports diverse commercial cooling applications.
• Extended Reach: The 60" capillary tube offers flexibility for remote mounting away from the evaporator coil.
• Industrial Ratings: High-amperage contacts (20A at 120/240V) handle heavy compressor loads without secondary relays.

• Can the Ranco A30-3725 be used in ice machines? Yes, it is specifically designed for ice machine applications where a constant differential is required to manage harvest and freeze cycles.
• Is the differential adjustable? No, this model features a fixed 19°F differential to ensure consistent cycling for sensitive food-safety applications.
• What does the "Off" position do? The switch includes a physical "Off" position on the dial for manual system shutdown during maintenance or cleaning.

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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.