HornBlasters 110-150 PSI Weatherproof Pressure Switch with 40A Relay

Max Load of 40 Amps & 1/4" NPT


18 reviews

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If you need a pressure switch that can take whatever mother nature can dish out, there is no better option than our 110-150 PSI Weatherproof Pressure Switch With 40A Relay! Our 110-150 PSI Weatherproof Pressure Switch With 40A Relay features a 40 amp relay built-and encased in a weatherproof coating, allowing for an incredibly easy install and worry-free operation of your onboard air system. When the pressure in your air tank drops below 110 PSI our 110-150 PSI Weatherproof Pressure Switch With 40A Relay will automatically activate both of your compressors and automatically shut them off when the air pressure reaches 150 PSI.

May Be Used As A Replacement With:

  • 150 PSI Conductor's Special Train Horn Kits (Partnumbers: HK-S4-232, HK-S4-238A, HK-S4-240, HK-S4-244, HK-S4-244K, HK-S4-248, HK-S4-2485L, HK-S4-2485K, HK-S4-540, HK-S4-544, HK-S4-544K, HK-S4-5485L, HK-S4-5485K)
  • 150 PSI AirChime Train Horn Kits (Partnumbers: HK-P3-540, HK-P5-540, HK-K3-540, HK-K5HA-540, HK-K5-540, HK-K5-5485K)
  • 150 PSI Outlaw Train Horn Kits (Partnumbers: HK-C3B-232, HK-C3-232, HK-C3B-244K)
  • HornAir 150 PSI Onboard Air Systems (Partnumbers: HA-232, HA-240, HA-244, HA-244K, HA-248, HA-2485L, HA-2485K, HA-540, HA-544, HA-544K, HA-5485L, HA-5485K)
  1. Moisture Resistant
  2. Built-In Relay
  3. Cycle Tested
  4. Made In The USA
  • One HornBlasters 110-150 PSI Pressure Switch
  • Part Number: PS-150H
  • Ports: 1x ¼″ NPT male
  • Turn-Off Pressure: 150 PSI
  • Restart Pressure: 110 PSI
  • Voltage: 12 Volts DC
  • Max Amps: 40 Amps
  • Length: 3.40″ (86.36 mm)
  • Width: 1.25″ (31.75 mm)
  • Height: 1.34in (34.04 mm)
  • Weight: 1 lb (0.45 Kg)
    • Money-Back Guarantee/Refund Policy
      All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
    • Warranty
      This product is backed by our One-Year Manufacturer's Defect Warranty!
    • HornBlasters.com Satisfaction Guarantee
      HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
    • Cross-Shipments
      HornBlasters.com will not cross-ship returned merchandise.
    • Physical Damage Policy
      Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

    Warnings & Notices

    Safety warning icon

    This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

    Customer Reviews

    4.8 Based on 18 Reviews
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    Replacement part under warranty

    My pressure switch corroded, a quick call and two days later the new one arrived! No charge , No hassle , No problem with this crew! Happy to be a dealer and a customer!!!! D.T. VALLEY UPFITTERS


    New parts for maintenance

    Great service; wish you guys still had the original shocker stickers though.


    Horn Blasters

    Very friendly helpful associate


    3rd one in 2yrs

    This is my 2nd set and I’ve had to replace the pressure switch twice. The 1st set is “blowing strong” New and improved don’t always mean it’s better. If it ain’t broke don’t try to fix it.



    It replaced one that originally came with purchase. Much simpler to install and does same job. This item should be with every kit