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Thermo King Genuine OEM HPCO High Pressure Cut-Out Switch, 41-4523


Sale price $39.99 Regular price $53.80
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Description

This Genuine OEM Thermo King HPCO High Pressure Cut-Out Switch (Part Number: 41-4523 / 414523) is a critical safety component engineered to protect transport refrigeration units (TRUs) from extreme internal system pressure spikes. Positioned within the high-pressure refrigerant line, this premium switch instantly detects when operational head pressure surpasses safe limits and interrupts electrical current to shut down or idle the compressor. Built to withstand aggressive thermal cycles, chemical exposure from R404A/R452A blends, and continuous over-the-road chassis vibrations, it prevents catastrophic compressor failure and ruptured hoses. Upgrading to this factory original component guarantees accurate electrical calibration, resolves intermittent fault codes, and maintains the safety systems required to protect your cargo and reefer assets.
⭐ Key Features & Benefits
  • Automated Compressor Protection: Instantly cuts compressor power upon detecting excessive head pressure to prevent catastrophic system damage.
  • Genuine OEM Calibration: Engineered to exact original equipment safety trip-points to prevent the system lag or bypass risks of generic alternatives.
  • Heavy-Duty Sealed Casing: Fully localized protective shell guards internal premium contacts against moisture, oil, dust, and highway debris.
  • Direct-Fit Plug Terminal: Factory-molded connector pins ensure a simple plug-and-play mechanical wiring connection.
  • Prevents Line Ruptures: Acts as an automatic circuit breaker, lowering structural stress on internal condenser coils, expansion valves, and fluid lines.
🔧 Uses / Applications
  • Refrigeration Pressure Monitoring: Functions as the primary High Pressure Cut-Out (HPCO) switch for long-range trailer reefer systems.
  • Multi-Temp System Regulation: Replaces failed, corroded, or stuck pressure sensors across high-demand transport fleets like the Thermo King SLX and SMX-II series.
  • Preventative Fleet PM Overhauls: Standard preventative maintenance hardware swapped out during comprehensive A/C compressor or condenser replacements.
  • High-Margin Liquidator Surplus: Highly sought-after industrial hard part for fleet logistics hubs, mobile mechanics, and commercial equipment liquidators.
📊 Technical Specifications
Specification Detail
Part Type HPCO High Pressure Cut-Out Switch Assembly
Position High-Side Compressor Discharge / Refrigerant Line
Part Number 41-4523 / 414523 (Interchangeable with 41-3668, 41-1608, 44-8064)
Material Corrosion-Resistant Brass Fitment & Sealed Polyurethane Housing
Fitment Thermo King SLX, SLXe, SMX-II, RD-II, and TD-II Series Transport Units
Condition Brand New
Installation Threaded NPT Mechanical Fit with Integrated Wiring Lead
🔄 Cross‑Reference / Interchange Table
Manufacturer Equivalent Part Number
Thermo King (OEM) 41-4523 / 414523 / 414-523
Thermo King Historical 41-3668 / 413668 / 41-1608 / 411608
FridayParts Alternate 44-8064 Replacement Line
Daimler / Industrial ID 1088A99G60 / 1088A99G49 / 1088A99G37
Additional Notes Always bleed system pressure downward safely per EPA guidelines before unseating your old pressure switch threads.

Disclosure Policy

This product was acquired by Freeman Liquidators from a sale of merchandise subject to a commercial insurance loss. Freeman Liquidators is a secondary seller of products, is not affiliated with or sponsored by the manufacturer of the products and is not a manufacturer authorized seller of the products. Sale of this product by Freeman Liquidators is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser.

All products are NEVER USED but external packaging will have damage. Some items may be placed into other packaging to ensure safe shipping. All items are opened for inspection prior to shipment to ensure the best quality of products. Freeman Liquidators guarantees your satisfaction. If you are not completely satisfied with a purchased product, within 30 days from the date of purchase, return the product in its packaging and Freeman Liquidators will fully refund your money.

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Thermo King Genuine OEM HPCO High Pressure Cut-Out Switch, 41-4523

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