Overview
The Belimo 01APS-501 is an adjustable differential pressure switch designed for air pressure monitoring in commercial HVAC duct systems. It provides reliable mechanical switching based on differential pressure thresholds.
Features
- Adjustable setpoint dial for precise switching point calibration
- Diaphragm-actuated SPDT contact for dependable switching
- Compact NEMA 13 / IP54 protective enclosure
- Auto-reset mechanical switch mechanism
- High repeating accuracy across operating range
Specifications
- Measuring Range: 0.80 to 4.00 inch WC [200 to 1000 Pa]
- Media: Air and non-combustible gases
- Switch Type: SPDT (1.0 A @ 250 VAC)
- Accuracy: ±1%
- Packaging: Single unit
Applications
- HVAC air filter status and clog monitoring
- Fan proving and airflow detection in ductwork
- Differential pressure control in ventilation systems



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