United Electric Controls 120 Series Pressure and Temperature Switches

Explosion-proof SPDT/DPDT and multi-switch output for control and safety applications

Heavy industrial processes rely on 120 Series pressure and temperature switches to protect equipment and personnel while preserving process uptime. The 120 Series is simple to install in hazardous location areas and perform critical alarm, safety and emergency shutdown functions. As an electromechanical switch, it can safely operate independently of the control system and switch reliably when needed, free from potential communication errors or cyber concerns.

Typical applications that utilize the 120 Series include rotating equipment such as pumps, turbines, and compressors, heat tracing, combustion systems, and oil, gas and chemical processing.

Features

    • SIL 2 certified (SIL 3 capable) switch providing reliable local switching of final element in safety instrumented systems (SIS)
    • Simplified installation with ample access to wiring compartment, terminal block, and set point adjustment
    • Protect piping and vessels with heat trace/freeze protection temperature models
    • Application versatility achieved through a variety of ranges, microswitches, sensors and process connections

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120 Series

69 items

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  • United Electric 120 Switches H122K-S157B
    H122K-S157B

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122K Differential Pressure Switch, 10-100 psid setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, welded 316LSS bellows, 1/2" FNPT SS pressure connector, external adjust...
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  • United Electric 120 Switches H122K-559
    H122K-559

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122K Differential Pressure Switch, 10-100 psid setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, Teflon and Buna-N diaphragm and Buna-N o-ring, 1/4" FNPT alum. pressure...
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  • United Electric 120 Switches H122-703
    H122-703

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122 Pressure Switch, 30-300 psi setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, Buna-N diaphragm and o-ring, 1/4" FNPT nickel-plated brass pressure connector, external...
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  • United Electric 120 Switches H122-554
    H122-554

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122 Pressure Switch, 0-30 psi setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, Teflon diaphragm and o-ring, 1/4" FNPT 316SS pressure connector, external adjust. w/ref. dial
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  • United Electric 120 Switches H122-552
    H122-552

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122 Pressure Switch, 30" Hg Vac-20 psi setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, Teflon diaphragm and o-ring, 1/4" FNPT 316SS pressure connector, external adjust...
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  • United Electric 120 Switches H122-376
    H122-376

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122 Pressure Switch, 0-500 psi setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, 316LSS bellows, 1/4" FNPT SS pressure connector, external adjust. w/ref. dial
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  • United Electric 120 Switches H122-361
    H122-361

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls 120 Series explosion-proof vacuum and pressure switches are approved for Class I and II, Div. 1 & 2 explosive and corrosive atmospheres. Available in a choice of sensors, ranges, switch configurations, process connections,...
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  • United Electric 120 Switches H122-358
    H122-358

    United Electric Controls

    Product Type: Pressure Switches

    United Electric Controls H122 Pressure Switch, 0-200 psi setpoint range, two SPDT, 15A@125/250/480 VAC, 3/4" FNPT electrical connector, NEMA 4X, 7 & 9 enclosure, 316LSS bellows, 1/4" FNPT pressure connector, external adjust. w/ref. dial
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