Description
The United Electric H100K-544 differential pressure switch is a low-pressure, field-adjustable control designed for precise monitoring of air and gas systems in HVAC and industrial applications. With an adjustable differential range of 2 to 20 inches of water column (in. W.C.), this switch is ideal for applications such as airflow proving, duct static pressure control, and filter condition monitoring. The SPDT (single-pole, double-throw) contact configuration allows for flexible control of normally open and normally closed circuits. The epoxy-coated NEMA 4 enclosure provides enhanced protection against water, dust, and corrosion, making it suitable for demanding indoor and outdoor environments.
Key Features
- Adjustable differential pressure range: 2–20 in. W.C.
- SPDT switch configuration for flexible control wiring
- Epoxy-coated NEMA 4 enclosure for added corrosion resistance
- Designed for low-pressure air and gas applications
- Ideal for HVAC systems, duct pressure monitoring, and airflow proving
- Durable construction for reliable long-term performance
- Suitable for indoor and outdoor installation environments







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