Description
The Cleveland Controls RFS-4100-078 is a precision-engineered low air flow switch designed to detect and respond to differential air pressure as low as 0.17″ w.c. (inches water column). Built for demanding HVAC and air handling applications, this switch provides reliable airflow proving and safety interlock functionality in commercial and industrial systems.
Product Overview
The RFS-4100-078 belongs to Cleveland Controls’ trusted RFS series of air flow switches, engineered to monitor duct airflow and confirm proper fan or blower operation. When airflow drops below the calibrated setpoint, the switch signals the control system to take protective action — helping prevent equipment damage and ensuring safe, efficient system operation.
Key Features
- Low differential pressure setpoint of 0.17″ w.c. for sensitive airflow detection
- Designed for use in HVAC air handling units, duct systems, and fan proving applications
- Compact, durable construction suitable for commercial and industrial environments
- Snap-action switching mechanism for reliable, repeatable performance
- Easy installation with standard duct mounting
- Provides airflow proving interlock to protect downstream equipment
Typical Applications
- Air handling unit (AHU) fan proving
- Blower operation verification in HVAC systems
- Duct pressure differential monitoring
- Safety interlock circuits for heating and cooling equipment
- Commercial and light industrial ventilation systems
Why Choose Cleveland Controls
Cleveland Controls has been a trusted name in HVAC sensing and switching solutions for decades. Their RFS series air flow switches are widely specified by engineers and relied upon by technicians for consistent, long-term performance in critical airflow monitoring applications.
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