Description
Restore cabin cooling with the 2601284 pressure switch. This normally-open pressure switch protects the compressor from low-refrigerant conditions by cutting the compressor clutch when pressure drops below 10 PSI. 1/4″ female thread fitting, direct replacement for OEM applications.
Signs You Need a New Low-Pressure Switch
- Compressor running with insufficient refrigerant charge
- A/C system not shutting off at low pressure
- A/C performance declining as pressure drops
- Compressor damage or seal failures due to low-pressure operation
Specifications
| Manufacturer | Red Dot |
|---|---|
| Part Number | 4379-RD548330 |
| Part Type | Low-Pressure Cutout Switch |
| Configuration | Normally Open (NO) |
| Pressure Rating | Opens 10 PSI / Closes 42 PSI |
| Thread Type | 1/4″ Female |
Cross References
This part replaces or is equivalent to the following part numbers:
- Freightliner/OEM: ABPN83-318034
- OEM Equivalent: RD5-4833-0
Applications
This low-pressure switch fits:
- Freightliner Classic, XL, FLD Series trucks
- Other heavy-duty trucks requiring 10/42 PSI low-pressure protection
Verify your A/C system pressure specifications and refrigerant type before ordering.









