United Electric Controls Type E55 Temperature Switch E55-E22BS

The United Electric Controls Type E55 Temperature Switch, model E55-E22BS, is a robust, bulb-and-capillary style temperature switch designed for precise temperature monitoring and control in demanding industrial environments. This device features a compact, die-cast aluminum enclosure with epoxy coating for corrosion resistance, making it suitable for hazardous locations with UL, cUL, and CE certifications. It operates within a range of 50 to 300°F (10 to 148°C), with a proof temperature of 350°F (176.7°C), and includes a 304 stainless steel wetted material for durability in wet or corrosive conditions. Key applications include process control in chemical plants, oil and gas facilities, and food processing, where it provides reliable switching for alarms, shutdowns, or interlocks. Advantages over similar products include its high electrical rating of 15A at 480VAC, adjustable setpoint, and single switch output for simplified integration. Benefits encompass high accuracy (±1% of range), vibration resistance, and long-term stability, though drawbacks may include the need for careful capillary installation to avoid damage and limited suitability for extremely high-temperature applications beyond its proof limit. This model excels in safety-critical systems, offering superior performance compared to basic thermostats by combining rugged construction with precise control.