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Pressure Switches

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Heat Transfer Prod 7855P-262 Pressure Switch 7855P-262 | Blackhawk Supply

7855P-262 | Pressure Switch 7855P-262 | Heat Transfer Prod

Brand: Heat Transfer Prod

SKU: 7855P-262

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Dwyer 1950G-0-B-24-NA Explosion-proof differential pressure switch | range .15-.50" w.c. | approx. deadband @ min. set point .06 | approx. deadband @ max. set point .11. | Blackhawk Supply

Brand: Dwyer

SKU: 1950G-0-B-24-NA

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Mars Controls 43327 Pressure Switch Klixon 4 Auto Reset SPST 350PSI Open-250PSI Reset Direct | Blackhawk Supply

43327 | Pressure Switch Klixon 4 Auto Reset SPST 350PSI Open-250PSI Reset Direct | Mars Controls

Brand: Mars Controls

SKU: 43327

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Dwyer ADPS-08-1-N Adjustable differential pressure switch | set point range 0.08 to 1.20" w.c. | 1/2" NPT connection. | Blackhawk Supply

ADPS-08-1-N | Adjustable differential pressure switch | set point range 0.08 to 1.20" w.c. | 1 / 2" NPT connection. | Dwyer

Brand: Dwyer

SKU: ADPS-08-1-N

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Dwyer 1823-0 Differential pressure switch | range 0.15-.5" w.c. | approx. deadband @ min. set point 0.06 | approx. deadband @ max. set point 0.06. | Blackhawk Supply

Brand: Dwyer

SKU: 1823-0

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York S1-02427634001 Pressure Switch Air 0.65 Inch Water Column On Fall Single Pole Normally Open for Downflow/Horizontal Gas Furnaces | Blackhawk Supply

S1-02427634001 | Pressure Switch Air 0.65 Inch Water Column On Fall Single Pole Normally Open for Downflow / Horizontal Gas Furnaces | York

Brand: York

SKU: S1-02427634001

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Weil Mclain 511624548 Pressure Switch Differential SPDT 1.15 Inch Water Column | Blackhawk Supply

511624548 | Pressure Switch Differential SPDT 1.15 Inch Water Column | Weil Mclain

Brand: Weil Mclain

SKU: 511624548

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Mars Controls 39225 Limit Switch Adjustable Open on Rise 175-215 Degree Fahrenheit | Blackhawk Supply

39225 | Limit Switch Adjustable Open on Rise 175-215 Degree Fahrenheit | Mars Controls

Brand: Mars Controls

SKU: 39225

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Water Heater Parts 100112850 Pressure Switch AO Smith Air 0.85 Inch Water Column Normally Closed | Blackhawk Supply

100112850 | Pressure Switch AO Smith Air 0.85 Inch Water Column Normally Closed | Water Heater Parts

Brand: Water Heater Parts

SKU: 100112850

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Dwyer A4-2 Differential pressure switch | ±4 psi (.28 bar) repeatability | set point (increasing) 13-25 psid (.89-1.7 bar) | set point (decreasing) 5-16 psid (.34-1.1 bar). | Blackhawk Supply

Brand: Dwyer

SKU: A4-2

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Macromatic TH43161-32-35J Repeat cycle (OFF 1st) | 240V AC/DC | 30A SPDT | 0.05 - 5 seconds | 0.1 - 10 minutes | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43161-32-35J

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Macromatic THR-13168-36-35 Repeat cycle (OFF 1st) | 240V AC | 10A SPDT | 0.6 - 60 seconds | 0.05 - 5 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: THR-13168-36-35

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Macromatic THR-13162-12-15 Repeat cycle (OFF 1st) | 240V AC | 10A SPDT | 0.6 - 60 seconds | 0.05 - 5 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: THR-13162-12-15

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Macromatic TH46168-12-35 Repeat cycle (ON 1st) | 24V AC/DC | 30A SPDT | 3 - 300 seconds | 1 - 100 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH46168-12-35

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Macromatic TH43162-F-08J Repeat cycle (OFF 1st) | 120V AC/DC | 30A SPDT | 0.05 - 5 seconds | 0.05 - 5 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43162-F-08J

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Macromatic TH43162-10J Repeat cycle (OFF 1st) | 120V AC/DC | 30A SPDT | 0.05 - 5 seconds | 1.8 - 180 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43162-10J

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Macromatic TH43162-10-04J Repeat cycle (OFF 1st) | 120V AC/DC | 30A SPDT | 0.05 - 5 seconds | 1.8 - 180 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43162-10-04J

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Macromatic TH43162-07-32J Repeat cycle (OFF 1st) | 120V AC/DC | 30A SPDT | 0.05 - 5 seconds | 0.3 - 30 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43162-07-32J

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Macromatic TH43162-07-04J Repeat cycle (OFF 1st) | 120V AC/DC | 30A SPDT | 0.05 - 5 seconds | 0.3 - 30 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43162-07-04J

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Macromatic TH43161-34-10J Repeat cycle (OFF 1st) | 240V AC/DC | 30A SPDT | 0.05 - 5 seconds | 0.1 - 10 hours | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH43161-34-10J

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Macromatic TH41368-15J Watchdog (switch trigger) | 240V AC/DC | 30A SPDT | 0.05 - 5 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH41368-15J

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Macromatic TH41361-31 Watchdog (switch trigger) | 240V AC/DC | 30A SPDT | 0.05 - 5 seconds | Encapsulated | Analog | Blackhawk Supply

Brand: Macromatic

SKU: TH41361-31

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Macromatic CUH20A1FJ Undercurrent only | 240V AC | 10A SPDT | 0.5 - 5A | 0.150-7 seconds | 1 second | Encapsulated | Blackhawk Supply

Brand: Macromatic

SKU: CUH20A1FJ

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Macromatic COH50A2FG Overcurrent only | 240V AC | 10A SPDT | 0.5 - 5A | 0.150-7 seconds | 1 second | Encapsulated | Blackhawk Supply

Brand: Macromatic

SKU: COH50A2FG

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HVAC Control Switches

Blackhawk Supply offers a robust array of HVAC control switches designed to command your system with precision and reliability.

With features like adjustable trip points, waterproof enclosures and quick-change mechanisms, these switches make system setup, maintenance and upgrades smoother than ever.

Explore our HVAC control switch selection, including:

Toggle switches: Manually control fans, pumps or other HVAC equipment with simple on/off switches.
Rotary switches: Select between different modes or speeds with multi-position switches commonly used for fan speed control or system mode selection.
Pressure switches: Monitor and respond to drops in system pressure with low-pressure HVAC control switch options.
Flow switches: Detect the presence or absence of fluid or air flow in pipes or ducts to trigger alarms or equipment shutdown and prevent damage.

Backed by durable construction and industry-leading brands, our HVAC control switch and HVAC blower control switch options stand up to demanding environments. Order yours today to fine-tune your system controls.

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