Cleveland Controls RFS-4001-038 Pressure Switch

The Cleveland Controls RFS-4001-038 is a professional-grade airflow pressure sensing switch designed for robust performance in HVAC and energy management systems. Engineered to detect positive, negative, or differential air pressure, this adjustable pressure switch features a set point range from 0.15" w.c. to 5.0" w.c. with a specialized progressive differential for precise calibration. This model is a direct replacement for RFS-4001-025 and incorporates 1/4" OD compression fittings for a secure, airtight connection to rigid tubing. Built with a zinc-plated steel housing and a silicone diaphragm, the RFS-4001-038 provides reliable SPDT contact switching rated up to 277 VAC, making it ideal for proving fan airflow and monitoring filter status in commercial air handlers and rooftop units.

• Universal Application: Compatible with positive, negative, or differential pressure sensing in any vertical mounting plane.
• High Electrical Capacity: Features SPDT contacts rated for 15 Amps non-inductive at 277 VAC, accommodating diverse control circuits.
• Precise Calibration: The adjustable set point allows for field-tuning between 0.15" and 5.0" w.c. using a simple calibration screw.
• Durable Construction: Heavy-duty plated housing and a 1/2 psi maximum pressure rating ensure longevity in demanding environments.

Common Questions:

What is the main difference between the RFS-4001-038 and the older RFS-4001-025?
The RFS-4001-038 is the direct manufacturer-designated replacement for the -025 model, maintaining the same 0.15" to 5.0" w.c. range and mechanical footprint for seamless field swaps.

Can this switch be used to monitor dirty filters?
Yes, by connecting the high and low pressure ports across the filter bank, the RFS-4001-038 functions as a differential pressure switch to signal when the pressure drop indicates a restricted filter.

Does this unit come with the compression nuts?
Yes, the RFS-4001-038 is equipped with integral compression ferrules and nuts designed for 1/4" OD rigid aluminum, copper, or plastic tubing.

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.