Official OEM Thermo King parts catalog entry for the Thermo King Contactor N.O. Ctr 3040305, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Contactor N.O. Ctr 3040305 provides a reliable, normally-open switching solution for transport refrigeration applications. Engineered to support temperature control circuits in Thermo King refrigeration systems, this contactor helps maintain precise electrical control for consistent reefer operation and maximum fleet uptime.
The Thermo King Contactor N.O. Ctr 3040305 is a normally-open electrical contactor intended for Thermo King transport refrigeration systems. This component performs the essential role of switching power within temperature-regulation circuits, supporting compressors, fan motors, and ancillary devices. For model-level compatibility and recommended installation procedures, contact West Texas Thermo King for verification and part lookup based on unit serial numbers.
This contactor supports fuel-efficient cooling strategies by maintaining precise electrical control within Thermo King systems, including operations that integrate Diesel Direct Electric and Smart Reefer SR-4 technologies. Reliable switching reduces electrical losses from intermittent faults and helps maintain CARB Evergreen and fleet emissions objectives through consistent system behavior and reduced unnecessary runtime.
Install using manufacturer-recommended torque values and OEM-grade connectors to ensure secure electrical connections. Inspect contact surfaces and coil insulation during routine service intervals and verify mounting hardware for corrosion or looseness. Replace contactors during scheduled preventive maintenance if electrical wear or contact pitting appears, and always follow Thermo King wiring diagrams for correct circuit placement.
The Thermo King Contactor N.O. Ctr 3040305 is ideal for reefer trailers, refrigerated straight trucks, and auxiliary refrigeration units used in regional and long-haul transport. Fleet operators in hot, dusty, and high-vibration environments rely on this component to preserve temperature control and cargo integrity across routes through the Permian Basin and West Texas corridors.
Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsBacked by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or reach out to the service department for confirmation.
Q: Is the Thermo King Contactor N.O. Ctr 3040305 compatible with Precedent and Smart Reefer units?
A: Model-level compatibility varies by unit configuration; contact West Texas Thermo King with the unit serial number for direct verification and fitment guidance.
Q: How often should a contactor be inspected?
A: Inspect contactors during scheduled preventive maintenance intervals and after heavy service cycles; look for contact wear, secure terminals, and proper coil operation to ensure continued reliability.
Q: Can this contactor improve fleet uptime?
A: Yes. Reliable switching reduces unexpected electrical faults and supports consistent temperature control, which contributes to higher uptime and lower operational disruption for transport refrigeration fleets.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
Official OEM Thermo King parts catalog entry for the Thermo King Contactor N.O. Ctr 3040305, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Contactor N.O. Ctr 3040305 provides a reliable, normally-open switching solution for transport refrigeration applications. Engineered to support temperature control circuits in Thermo King refrigeration systems, this contactor helps maintain precise electrical control for consistent reefer operation and maximum fleet uptime.
The Thermo King Contactor N.O. Ctr 3040305 is a normally-open electrical contactor intended for Thermo King transport refrigeration systems. This component performs the essential role of switching power within temperature-regulation circuits, supporting compressors, fan motors, and ancillary devices. For model-level compatibility and recommended installation procedures, contact West Texas Thermo King for verification and part lookup based on unit serial numbers.
This contactor supports fuel-efficient cooling strategies by maintaining precise electrical control within Thermo King systems, including operations that integrate Diesel Direct Electric and Smart Reefer SR-4 technologies. Reliable switching reduces electrical losses from intermittent faults and helps maintain CARB Evergreen and fleet emissions objectives through consistent system behavior and reduced unnecessary runtime.
Install using manufacturer-recommended torque values and OEM-grade connectors to ensure secure electrical connections. Inspect contact surfaces and coil insulation during routine service intervals and verify mounting hardware for corrosion or looseness. Replace contactors during scheduled preventive maintenance if electrical wear or contact pitting appears, and always follow Thermo King wiring diagrams for correct circuit placement.
The Thermo King Contactor N.O. Ctr 3040305 is ideal for reefer trailers, refrigerated straight trucks, and auxiliary refrigeration units used in regional and long-haul transport. Fleet operators in hot, dusty, and high-vibration environments rely on this component to preserve temperature control and cargo integrity across routes through the Permian Basin and West Texas corridors.
Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsBacked by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or reach out to the service department for confirmation.
Q: Is the Thermo King Contactor N.O. Ctr 3040305 compatible with Precedent and Smart Reefer units?
A: Model-level compatibility varies by unit configuration; contact West Texas Thermo King with the unit serial number for direct verification and fitment guidance.
Q: How often should a contactor be inspected?
A: Inspect contactors during scheduled preventive maintenance intervals and after heavy service cycles; look for contact wear, secure terminals, and proper coil operation to ensure continued reliability.
Q: Can this contactor improve fleet uptime?
A: Yes. Reliable switching reduces unexpected electrical faults and supports consistent temperature control, which contributes to higher uptime and lower operational disruption for transport refrigeration fleets.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
