Ranco A30-X453 Control

The Ranco A30-X453 Control is a versatile, single-pole, single-throw (SPST) constant differential temperature control designed for direct replacement in commercial refrigeration and room air conditioning systems. Engineered for high-load reliability, this cold control operates with an open-low switch configuration, specifically calibrated for a 53-85°F temperature range. It features an 18-inch capillary tube for accurate remote sensing, ensuring precise compressor cycling even in compact evaporator housings. As the direct replacement for 3030-709, the A30-X453 simplifies retrofitting by including a break-off shaft, dial knob, and universal mounting bracket. Technicians rely on its heavy-duty electrical ratings—handling up to 20A at 120/240V AC—to manage inductive compressor loads without premature contact pitting. Its laser-welded stainless steel bellows provide the necessary mechanical repeatability required in demanding reach-in coolers and industrial ventilation environments where maintaining a tight 5°F to 7°F differential is critical for efficiency.

Key Benefits

• Broad Compatibility: Engineered as a universal refrigeration thermostat to replace OEM parts in brands like Carrier, GE, and Whirlpool.
• Fast Installation: Includes break-off shaft and mounting hardware, allowing for immediate field adaptation to various cabinet depths.
• Rugged Design: Features high-amperage contacts and a durable vapor-filled capillary for long-term sensing stability.
• Accurate Regulation: Optimized for low temperature monitoring between 53°F and 85°F, preventing equipment over-cycling.

Common Questions

What is the difference between A30-X453 and 3030-709?
The A30-X453 is the official form-fit-function replacement for the legacy 3030-709, featuring updated materials while maintaining identical electrical specs and the 18" capillary length.

How do I install the 18" capillary for best results?
Route the sensing tube carefully to avoid sharp kinks. Ensure the bulb end is securely fixed to the evaporator surface or within the designated airflow path for accurate thermal transfer.

Can this control handle a 240V compressor?
Yes, the A30-X453 SPST switch is rated for 20 Amps at both 120V and 240V AC, making it suitable for standard commercial motors and HVAC temperature regulation.

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.