Offered here is a United Electric Controls (UEC) H122-554 industrial pressure switch, Option 1535, a robust, Made-in-USA process control device engineered for dependable pressure monitoring and control in demanding industrial environments. Featuring a 0–30 PSI (0–2.1 bar) adjustable pressure range, dual SPDT switching, high-ambient capability, and rugged NEMA 4X-style construction, this unit is well suited for industrial automation, process equipment, pumps, compressors, HVAC systems, oil & gas, chemical processing, and pressure alarm/shutdown applications. The heavy-duty construction, stainless-steel pressure connection, and clearly marked identification plate make this an excellent choice for industrial replacement, maintenance, retrofit, or control-system applications. Please review the detailed photographs carefully to verify condition, configuration, fittings, and included components before purchase.
Specifications:
- Brand: United Electric Controls
- Model: H122-554
- Option: 1535 – High Ambient
- Series: 120 Series
- Pressure Range: 0–30 PSI
- Switch Configuration: Dual SPDT
- Electrical Rating: Up to 15A, 125/250/480 VAC resistive
- Pressure Connection: 1/4″ FNPT, 316 Stainless Steel
- Electrical Connection: 3/4″ FNPT
- Sensing Element: Teflon diaphragm with Viton O-ring
- Enclosure: Rugged NEMA 4X construction
- High Ambient Rating: Up to approximately 250°F / 120°C
- Adjustment: External pressure adjustment with reference dial
Applications:
- Industrial process control systems
- Pump and compressor pressure control
- Boiler and utility systems
- Oil & gas equipment
- Chemical and process industries
- HVAC and mechanical systems
- Industrial automation and machinery
- Pressure alarm and shutdown circuits
- Factory control systems
- Process instrumentation
- Equipment protection and safety interlocks
- Replacement or retrofit of existing pressure switches
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