Description
Built for Class 8 A/C service, the 2601042 trinary pressure switch ships ready to install. This 12/24V, 4-terminal switch features normally-open configuration and female 1/4″ fitting, commonly used for fan override and compressor engagement control in Western Star and other heavy-duty truck applications.
Signs You Need a New Pressure Switch
- Fan coupling won’t engage or remains constantly engaged
- A/C compressor clutch fails to engage when A/C is requested
- Air conditioning produces no cold air or intermittent cooling
- High pressure warning or compressor lockout codes
Specifications
| Manufacturer | Red Dot |
|---|---|
| Part Number | 2601042 |
| OEM Number | RD5-4583-0 |
| OEM Alternate | A06-18015-000 |
| Part Type | Trinary Pressure Switch |
| Voltage | 12/24V |
| Terminal Configuration | 4-Terminal |
| Function | Normally Open (NO) Fan Override |
| Port Fitting | Female 1/4″ |
Cross References
This part replaces or is equivalent to the following part numbers:
- Red Dot: RD5-4583-0, 71R7550, 71R7715
- OEM: A06-18015-000, 1560
- Also known as: 1-4512, 11-2624, 128264, 14-5327, 1676658-C1, 1MR3506P2, 207094, 2299003, 35901, 404172, 650633, 850-8952, 865700, 901221, 923-1008, ABPN83318029, ABPN83318149, BC1000, BC10000, E-807252, K301-239, PTAC1560, RD-5-5012-3, RD5-6012-3, RF4756506662, ZGG19280
Applications
This trinary pressure switch fits:
- Western Star heavy-duty trucks (2001-2012): All Series
- Fan coupling and cooling system override applications
- Freightliner and other Class 8 truck manufacturers
Verify your A/C system configuration and fitting size before ordering to confirm fitment.
