Description

Overview

High Pressure Switch Thermo King X-430 protects the refrigeration system by opening the circuit when compressor discharge pressure climbs too far. It suits X-430 large shaft and X-430 small shaft compressor setups, so it plays a direct role in unit protection rather than routine switching. When this switch fails, the unit can trip out unnecessarily or stop protecting the discharge side properly.

Features

• Suits Thermo King X-430 large shaft and small shaft compressors
• Male 7/16″-20 UNF thread for the discharge manifold connection
• 32.43 bar open point with 25.87 bar reset point
• Uses a copper gasket style seal at the switch seat

Specifications and Materials

High Pressure Switch Thermo King X-430 is a threaded compressor protection switch for trailer refrigeration units that use the X-430 compressor family. It uses a male 7/16″-20 UNF thread and switches at 32.43 bar open and 25.87 bar close. Part number: TK-42-0708-AM.

See the Thermo King operator’s manual for compressor discharge manifold protection guidance.

Compatibility and Fitment

Match the compressor family, thread and switch points before ordering. It suits X-430 large shaft and small shaft compressors, and it also aligns with later SLX, SLXe, SLXi and Advancer trailer applications that use the X-430 discharge manifold. Replace the sealing gasket if the old one has flattened or marked the seat. 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. 42-0708, 420708, 42-708, 42708

Compliance and Safety

Shut the unit off and disconnect the battery before inspection or service, because the unit can start without warning. Then handle the refrigerant side correctly before removing the switch from the discharge manifold. Fit the new switch squarely, inspect the seal face, and check for leaks before returning the unit to service.

Trailer Applications

High Pressure Switch Thermo King X-430 suits trailer refrigeration repairs when excessive discharge pressure shuts the unit down or when a failed switch causes nuisance cut-out faults. It fits common X-430 compressor work on large shaft and small shaft setups, so it suits workshop repairs on a broad range of Thermo King trailer units.

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 compressor and electrical repairs on trailer refrigeration equipment. Browse Thermo King parts at ICS Trailers for more transport refrigeration replacements.