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Showing 186 items within 19 product groups See all items from other sellers
  • Air Conditioning Pressure Cutout Controls

    See all 6 items in product family.
    Air Conditioning Pressure Cutout Controls Are Used For Air Conditioning Pressure Control, Refrigeration Pressure Control And Head Pressure Control Applications.

    Air Conditioning Pressure Cutout Controls are made of black phenolic resin spring clip snap-on insulated terminal cover for long lasting durability and accurate repeatability. Compact size with trip-free manual reset, dust-tight contact unit with quick connect connectors, and a 36" or 42" capillary with 1/4" sweat section. Set point is adjustable by screwdriver. For use with non-corrosive refrigerants. Available in several different combinations of switch actions and pressure connections.

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  • Electronic Pressure Controls And Transducers

    See all 11 items in product family.
    Electronic Pressure Controls And Transducers Are Used For Dual Static Pressure Control, Building Pressurization, Damper Positioning And Flow Valve Positioning.

    Electric Pressure Controls and Transducers are used in conjunction with one another for controlling a variety of single and multi-stage HVAC and refrigeration applications. Electronic Pressure Transducers provide control signals to fan speed control in air conditioning and refrigeration applications. Electronic Pressure Controls are available in several varieties for controlling condenser fans, pressurization, compressor unloading and more. Controls are available as Electronic Pressure Controls or Electronic Proportional Plus Integral Pressure Controls specifically for Static Pressure and PSI.

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  • Single-Point Differential Lube Oil Pressure Switches

    See all 3 items in product family.
    Single-Point Differential Lube Oil Pressure Switches Are Used For Dual Static Pressure Control, Building Pressurization, Damper Positioning And Flow Valve Positioning.

    Single-Point Differential Lube Oil Pressure Switches continuously monitor net luve oil pressure. Control holds to a setpoint, regardless of load shifts on a system. Field selectable proportional only or proportional plus integral control. surface of DIN rail mounting and ten segment LED displays percent of output signal provide accuracy and ease of use. Wiring harness included. Available in three Differential Pressure options.

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  • Pressure Controls

    See all 29 items in product family.
    Pressure Controls Are Used For Air Conditioning And Refrigeration Applications.

    Pressure Controls are made of a set of switch contacts that open and close by the movement of pressure actuated bellows. Full adjustability throughout the pressure range, adjustable differential and structure provide long lasting durability. Load-carrying contacts provide direct control of AC motors within the control rating, and are available with either close high-open low, open high-close low, or SPDT contact action. Universal mounting bracket included. Available for a variety of HVAC applications.

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  • Differential Pressure Controls

    See all 8 items in product family.
    Differential Pressure Controls Are Used For Air Conditioning And Refrigeration Applications.

    Differential Pressure Controls measure the pressure difference between supply lines and return lines. A change in differential pressure will reposition the switching mechanism to cause corrective action of the supplementary control equipment. Load carrying contacts provide direct control of AC motors within the control rating providing full adjustability through all pressure ranges and minimum differential. Manual reset models are ¿trip-free¿ for higher accuracy and ease of operation. Universal mounting bracket included. Available in a variety of switch action types and switch differentials.

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  • Pressure Sensing Switches & Probes

    See all 10 items in product family.
    Pressure Sensing Switches & Probes Are Used For HVAC Energy Management and DDC Applications.

    Pressure Sensing Switches & Probes kits have all hardware necessary to install and apply. Includes Individual Carton with Label Product Instruction Manual, Field Adjustable NS2-0000-01 Switch, Black Set Point Adjustment Screw, Hexagon Adjusting Wrench, Color-Coded Set Point Range Springs, Half Strap Mounting Bracket, Angle Mounting Bracket, Mounting Screw for Optional Brackets, #6 x 3/8" Air Switch Mounting Screws and Pairs of Color-Coded Orifices (Green, Gray, Red, Blue). SPDT contract arrangement or SPST manual reset. Connections are 2 or 3 Screw-type terminals with cupwashers, Standard quick-connect terminals or Male quick-connect terminals. Max operating temperatures are 0.5 and 1.

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  • Supco Pressure Switches

    See all 32 items in product family.
    Supco Pressure Switches Are Used As Replacements And For Use In Fan Cycling And Other Pressure Applications.

    Supco Pressure Switches are made for commercial grade for long lasting durability. Replaces Hundreds of small footprint air switches. Includes springs and orifice restrictors and hardware kit. Variety of types are available.Tolerances are 5, 10 and 15. Package quantity is 1. Open and Closed PSIs vary per type.

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  • TPI Low Voltage Relays

    See all 4 items in product family.
    TPI Low Voltage Relay Single Switch Throw With Built-In Transformer 20V 24A05A1

    Features:
    • Gray Metal Construction
    • 25 Amps
    • 24 Volts
    • 50 - 90°F Temperature Range
    • cULus Approved
    • For Remote Mounting or in Factory Provided Optional Enclosure
    • 1 Year Limited Warranty


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  • Tridelta Pressure Switches

    See all 2 items in product family.
    Honeywell 3000 Series Switches Ensure Control Stability Through Wide, Variable Temperature And Humidity Conditions And Provide Uninterrupted Service Under Extreme Shock And Vibration.

    Pressure switches feature cost effective, snap-acting electrical switches and field adjustable set points with a visual scale for easy set point selection. UL recognized, CSA certified. Built-in overpressure protection eliminates stress on other critical operating units. Pressure ranges as low as 3" WC up to 40 PSI. SPST, SPDT or DPDT switching logic. A variety of mounting pan and pressure fitting materials avaialble including plated steel, stainless steel or injection molded plastic. Wide array of pressure fittings; 1/8" NPT male, 3/16" barbed, 1/8", 3/16" or 1/4" compression, or 1/8" NPT female with 1/2" conduit male external thread for mounting.

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  • Low Pressure Control with Time Delay

    See all 6 items in product family.
    Low Pressure Controls With Time Delay Are Used For Oil Pressure Lubrication In A Variety Of Industrial Equipment.

    Low Pressure Controls are single unit mounting and wiring for easy installation. Made with a dust-protected snap action switch for long lasting durability. Low pressure control has time delay and manual reset lockout, direct reading scale indication and trip-free manual reset. Replacement timing relays available. A drop in pressure energizes the time delay relay and opens a contact after the time delay, shutting down the equipment. The time delay prevents shutdowns due to momentary fluctuations in system pressures. Timing mechanism can be easily removed and replaced in the field. Simple, single pointer scale indicates cutout pressure. Available with a variety of time delay settings.

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  • Mounting Probe Kit

    See all 3 items in product family.
    Mounting Probe Kits Are Used For Liquid Level Control For Open And Closed Tanks And Sumps.

    Mounting Probe Kits are made of steel for long lasting durability. Remote Mounting Kit provides 4 in. flanged sensing tube, two barbed fittings, two No. 10 screws, and a gasket .Packing nut assembly used in applications where temperature does not fall below -35°F (-37°C) and Maximum liquid pressure limit 150 PSIG (1034 kPa). Use with Style 1, 3/8 in. diameter bulb for direct immersion application. A19s require models with support tube; A70sand A72s do not need support tubes. Types are Packing Nut Assembly and Remote Mounting Probe Kit. Sizes vary per type.

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  • Encapsulated Pressure Switches

    See all 13 items in product family.
    Encapsulated Pressure Switches Are Used For Low Limit, High Limit, And Fan Cycling Control In A Variety of Commercial Refrigeration Applications.

    Encapsulated Pressure Switches are nonadjustable, SPST, direct-mount switches for use with noncorrosive refrigerants. The switches are available with automatic reset in both open low and open high configurations and manual reset with open high action. Compact size allows for direct mounting, and trip-free manual reset contacts cannot be overridden by continued depression of the reset button. Use with all non-corrosive refrigerants, the encapsulated switch is dust tight. Electrical connections are made to 48 in. leads. Open and Close settings vary. Available in a variety of styles.

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  • Condenser Fan Cycling Controls

    See all 13 items in product family.
    Condenser Fan Cycling Controls Are Used For Commercial Refrigeration And Air Conditioning Applications.

    Condenser Fan Cycling Controls provide cut-out control, pump-down control and capacity control on commercial refrigeration and air conditioning applications. Controls are made with all-steel case and cover for long lasting durability for internal components. Visible pressure scale is ¿Sight-Set¿ calibrated for higher accuracy and can be adjusted through the range. Manual reset lockout option provides ¿trip free¿ lockout that cannot be reset until pressure returns to specified level. Available in a variety of available pressure connection styles in several pressure ranges, compatible with most common refrigerants. Ammonia compatible models available. Several different electrical ratings and switch configurations are available.

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  • Low Pressure Controls

    See all 4 items in product family.
    Low Pressure Controls Open Or Close Electrical Circuits From A Change In Operating Air Pressure.

    Low Pressure Controls are used to control pumps or small air compressors in pneumatic systems. R to Y terminals make (cut-in) on pressure rise. Visible calibrated adjustable range scale provides ease of operation, and the snap-acting switch is in a dust protected enclosure for long lasting durability and functionality. Wiring terminals are easily accessible. Equipped with a universal mounting bracket and barbed fitting. Available with several types of pressure connectors.

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  • Lube Oil Pressure Controls

    See all 10 items in product family.
    Lube Oil Pressure Controls Provide Pressure Protection For Refrigeration Compressors.

    Lube Oil Pressure Controls are available in several varieties to suit any number of applications. P128 and P145 series controls provide dependable low pressure lube oil cut-out for pressure lubricated refrigeration compressors. Ambient compensated time delay relay and trip-free manual reset provide ease of use and accurate readings. 1/4" male flare pressure connection may be used with a refrigerant hose or cap tube. P128 Series offers adjustable range settings. P545 Controls feature SPDT relay contacts for liquid line solenoid and alarm applications.

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  • Lube Oil Pressure Cutout Controls

    See all 16 items in product family.
    Lube Oil Pressure Cutout Controls Measure Pressure Available To Circulate Oil Through Lubrication Systems.

    Lube Oil Pressure Cutout Controls provide pressure protection on refrigeration compressors. Built-in time delay switch allows controls to accurately compensate for ambient temperature and provides pressure pick up on starts and avoids shutdowns. Controls are made with black phenolic resin spring clip snap-on insulated terminal cover for long lasting durability. Accurate repeatability and compact size with ¿trip-free¿ manual reset and dust-tight contact and adjustable set point. P28 Series Controls feature direct-reading scale indication and available replacement timing delays. P45 Series Controls feature universal mounting and ambient compensated time delay.

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  • Sensitive Pressure Switches

    See all 7 items in product family.
    Differential Pressure Switches Sense Pressure And Air Flow In Ducts.

    Differential Pressure Switches are made for long lasting reliability and dependability. Feature direct reading scale indication, dust-protected snap action and switch trip-free manual resets. Low pressure control with time delay and lockout requires manual reset. Time delay prevents shutdowns due to momentary fluctuations in system pressures. Available in a wide selection of units with variousOutputs, Set Point and Throttling ranges.

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  • Pressure Transducer

    See all 1 items in product family.
    DPT2640-010D Very Low Differential Pressure Transducer

    Setra Systems 264 pressure transducers sense differential or gauge (static) pressure and convert this pressure difference to a proportional electrical output for either unidirectional or bidirectional pressure ranges. The 264 Series is offered with a high level analog 0 to 5 VDC or 4 to 20 mA output. Used in Building Energy Management Systems, these transducers are capable of measuring pressures and flows with the accuracy necessary for proper building pressurization and air flow control. The 264 Series transducers are available for air pressure ranges as low as 0.1 in. W.C. full scale to 100 in. W.C. full scale. Static standard accuracy is ±0.5% full scale in normal ambient temperature environments, but higher accuracies are available. The units are temperature compensated to 0.033% FS/of thermal error over the temperature range of 0oF to +150oF.The Model 264 utilizes an improved all stainless steel micro-tig welded sensor. The tensioned stainless steel diaphragm and insulated stainless steel electrode, positioned close to the diaphragm, form a variable capacitor. Positive pressure moves the diaphragm toward the electrode, increasing the capacitance. A decrease in pressure moves the diaphragm away from the electrode, decreasing the capacitance. The change in capacitance is detected and converted to a linear DC electrical signal by Setra's unique electronic circuit. The tensioned sensor allows up to 10 PSI overpressure (in either direction) with no damage to the unit. In addition, the parts that make up the sensor have thermally matched coefficients, which promote improved temperature performance and excellent long term stability.

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  • Packard® Switch Kits

    See all 8 items in product family.
    Packard® Switch Kits Are Used For Controlling Various HVAC Applications.

    Adjustable Switch Kits are made with an SPDT (Single Pole Double Throw) connection. Available connections on adjustable switch kits are Screw Top With Cup Washers, 1/4” Quick Connect or Three 90° Male Quick-Connect. Fixed Set Point Switch Kits are made with an SPDT (Single Pole Double Throw) configuration and a 90° male quick-connect connection. Operating temperature range is -40°F to 180°F. Field-Adjustable Manual Reset Kits are made with an SPST (Single Pole Single Throw) configuration and feature a screw top connection with cup washers.

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