Sullair 02250138-450 High-Temperature Engine Switch

Sullair 02250138-450 High-Temperature Engine Switch

The Sullair 02250138-450 is a genuine OEM high-temperature engine switch designed for compatible Sullair air compressors. This normally closed temperature switch monitors engine temperature and works with the compressor’s protective control system to help prevent damage caused by overheating.

Also searched as 02250138450, this Sullair temperature switch is rated for 225°F and features a 1/2-inch NPT threaded connection.

Product Specifications

• Manufacturer: Sullair

• Manufacturer part number: 02250138-450

• Edmac reference: 3003618694

• Part type: High-temperature engine switch

• Temperature rating: 225°F, approximately 107°C

• Contact configuration: Normally closed (NC)

• Connection: 1/2-inch NPT

• Product type: Genuine OEM Sullair part

• Application: Compatible Sullair air compressor systems

What Does the Sullair 02250138-450 Temperature Switch Do?

The 02250138-450 monitors engine temperature as part of the compressor’s safety and control system. If the engine reaches the switch’s specified high-temperature threshold, the switch changes state so the control system can respond to the overheating condition. This helps protect critical engine and compressor components from excessive heat.

A failed or unreliable temperature switch may cause incorrect high-temperature warnings, unexpected shutdowns, or a failure to respond properly when an overheating condition occurs. Always inspect the cooling system and determine the underlying cause of any high-temperature event before replacing the switch.

When Should the 02250138-450 Switch Be Replaced?

Replacement may be necessary if the switch is damaged, corroded, leaking, producing an incorrect temperature signal, or no longer operating at its specified temperature. Installation and testing should be performed by a qualified technician following the applicable Sullair service procedures.

Confirm Compatibility Before Ordering

Sullair compressor parts can be model- and serial-number specific. Confirm that 02250138-450 is the correct part number for your equipment before ordering. If you are unsure about compatibility, provide your compressor model and serial number to the Edmac parts team for verification.

Order the genuine Sullair 02250138-450 high-temperature engine switch from Edmac Compressor Parts. Contact us for current availability, lead time, and assistance confirming fitment.