United Electric Controls H54-28 Diaphragm Pressure Switch

Product Description

The UNITED ELECTRIC CONTROLS H54-28 is a general purpose diaphragm pressure switch designed to monitor and respond to pressure changes in industrial and commercial systems. It uses a diaphragm sensing element to detect pressure shifts and open or close a circuit at a set point, making it suitable for fluid and gas pressure monitoring applications. The H54-28 features a 1/4 inch threaded process connection and operates with a minimum deadband of 2.5 psi and a maximum deadband of 5.00 psi. At 0.75 pounds, this compact switch is well suited for panel integration or field mounting by licensed electricians, HVAC technicians, and instrumentation technicians working on pressure control loops.

The H54-28 is intended for general purpose pressure switching applications across a range of commercial and light industrial systems, including HVAC, compressed air, hydraulic, and fluid handling systems. Its diaphragm design makes it appropriate for installations where low differential pressure detection is required. The 1/4 inch thread fitting allows for straightforward integration into standard pipe or manifold configurations. This switch is typically installed by qualified trades professionals during new system commissioning or as a replacement in existing pressure monitoring circuits.

Key Features

• Diaphragm sensing element suited for low differential pressure applications
• 1/4 inch threaded process connection for standard pipe integration
• Minimum deadband of 2.5 psi for responsive pressure detection
• Maximum deadband of 5.00 psi providing adjustable switching range
• Compact and lightweight at 0.75 pounds for panel or field mounting

Compatibility

Designed as an OEM-style general purpose diaphragm pressure switch suitable for residential and commercial pressure monitoring and control applications requiring a 1/4 inch threaded connection.

Installation Notes

Installation should be performed by a licensed electrician or qualified instrumentation technician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the circuit and depressurize the system fully before connecting or disconnecting the switch. Ensure the 1/4 inch threaded port is clean and use appropriate thread sealant compatible with the process fluid or gas. Verify the system pressure range falls within the switch deadband specifications before returning the system to service.