Description

Overview

Thermo King High Pressure Sensor Switch suits selected Spectrum, SL, SB and SLX units and protects the refrigeration circuit by cutting out on high discharge pressure. It uses a 375 psi setting and a 1/8 NPT thread, so it matters when a failed HPCO switch causes shutdown faults, nuisance trips or loss of pressure protection during service.

Features

• 375 psi high pressure cut out switch
• 1/8 NPT threaded fitment
• Suits selected Thermo King Spectrum, SL, SB and SLX applications
• Replaces a worn or faulty HPCO switch during refrigeration fault repairs

Specifications and Materials

Thermo King High Pressure Sensor Switch is a high pressure cut out sensor switch for selected transport refrigeration applications. Match the unit family, thread size and switch function before ordering, because pressure protection components can vary across Thermo King systems.

Part number: TK-41-3669-AM.

Official Thermo King parts and accessories page

Compatibility and Fitment

Check the unit family and fitted switch details before ordering. This part suits selected Thermo King Spectrum, SL, SB and SLX applications and uses a 1/8 NPT thread with a 375 psi setting. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 41-3669, 413669

Compliance and Safety

Isolate power and relieve system pressure before removing the switch. Then inspect the port threads and wiring connection, because damaged threads or a loose terminal can cause repeat faults after fitting. Avoid overtightening the switch, and keep the sealing face clean during installation.

Trailer Applications

Thermo King High Pressure Sensor Switch suits trailer refrigeration repairs where the high pressure cut out circuit needs a direct replacement after a switch failure or pressure-related alarm. It is most relevant on units that trip on pressure faults, lose switch continuity or need a fresh HPCO switch during refrigeration control work.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers carries Thermo King service parts used in refrigeration electrical repairs, so this switch sits with the control and pressure protection parts often changed in the same job.

Browse Thermo King parts at ICS Trailers