Ranco A22-2451 Control

The Ranco A22-2451 Control is a versatile, constant differential temperature control engineered for precision in room air conditioning and commercial refrigeration applications. This SPDT (Single Pole, Double Throw) electromechanical switch provides high-amperage switching capacity, rated for 20A at 120V/240V AC, making it a rugged solution for governing compressor cycles. With a dial range of 45°F to 81°F and a fixed 5°F differential, it ensures stable thermal regulation. The 27-inch capillary with a straight bulb sensing element allows for flexible remote mounting and accurate response to ambient or surface temperatures. This unit is the designated direct replacement for ICP 1053665 and Ranco 3030-707, as well as various GE and Amana OEM parts. Designed for the field, it includes a break-off shaft, dial knob, and universal mounting bracket to streamline installation on single-stage heat/cool units or cooling-only systems. Its durable construction and laser-welded bellows support long-term reliability in demanding HVACR environments.

• Universal Compatibility: Serves as a drop-in replacement for 1053665 and 3030-707, reducing truck stock requirements.
• High Electrical Rating: Heavy-duty 20-amp contacts handle inductive motor loads without the need for external relays in most room A/C applications.
• Flexible Installation: The 27" capillary and break-off shaft allow for rapid adaptation to various cabinet depths and mounting configurations.
• Accurate Sensing: Maintain tight control over environmental conditions with a consistent 5°F differential across the 45-81°F temperature range.

What is the difference between SPDT and SPST in this control?
The SPDT switch configuration on the A22-2451 provides both normally open (NO) and normally closed (NC) contacts, allowing it to control heating or cooling loads, or to toggle between a compressor and an indicator light.

Can I use this for a walk-in cooler?
While primarily designed for room air conditioners and beverage coolers, this mechanical temperature control can be used in any application within its 45°F to 81°F operating range where a constant differential is required.

Does this unit have an "OFF" position?
Yes, the A22-2451 features a positive "OFF" position on the dial, allowing technicians to manually break the circuit for maintenance or seasonal shutdown.

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.