Ranco O16-104 Temp Control

The Ranco O16-104 Temp Control is a field-proven SPDT medium temperature refrigeration control designed for professional contractors managing walk-in coolers, display cases, and self-contained refrigeration units. Engineered with a 0°F to 55°F temperature range and an adjustable differential of 3°F to 20°F, this mechanical thermostat provides the exacting precision required to maintain stable setpoints. This unit serves as the direct replacement for Ranco O16-H6951, ensuring seamless mechanical compatibility during emergency service calls or planned maintenance upgrades.

Built for durability in high-cycle commercial environments, the O16-104 features a 72-inch capillary tube with a remote bulb, allowing for flexible sensor placement. The heavy-duty plated steel frame and laser-welded bellows contribute to an extended service life by resisting mechanical fatigue. For streamlined installation, the control includes a NEMA 1 enclosure, a front-located captive cover screw, and accessible raised screw terminals that simplify wiring for either 120V or 240V circuits.

Key Benefits for Technicians:

• Universal mounting and a compact footprint allow for easy integration into existing control panels or cabinet walls.
• Equipped with 7-revolution range adjustment screws for high-resolution setpoint accuracy.
• SPDT switch action offers versatile control for either cooling or heating applications.
• Non-conductive cover enhances safety during live-circuit testing and troubleshooting.
• A large, easy-to-read scale plate allows for rapid visual confirmation of current settings in low-light mechanical rooms.

Common Questions & Compatibility:

• Is the O16-104 a direct drop-in for the O16-H6951? Yes, it is the official manufacturer-designated successor and fits the same mounting profile.
• Can this control be used for heating? Yes, the SPDT contacts allow you to wire for either "open on rise" or "close on rise" functionality.
• Does it include a remote sensor? Yes, the 72-inch remote bulb capillary is ideal for sensing evaporator or ambient air temperatures at a distance from the control body.

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.