Danfoss 060B017291 Pressure Switch

The Danfoss 060B017291 is a high-performance MP55 differential pressure switch designed for critical lube oil protection in refrigeration compressors. As the direct replacement for the discontinued 060B017266, this unit ensures seamless integration into existing systems utilizing HCFC and non-flammable HFC refrigerants. Built for the rigors of industrial HVACR environments, it features an adjustable differential pressure range of 4.3 to 65 psig (0.3 to 4.5 bar), allowing technicians to fine-tune safety parameters based on specific compressor requirements. The integrated thermal time relay provides a 90-second delay, preventing nuisance trips during startup while ensuring the compressor stops if oil pressure fails to reach the setpoint. With a manual reset function and 1/4 inch flare pressure connections, the Danfoss MP55 pressure switch offers the mechanical and electrical reliability essential for preventing catastrophic motor failure due to loss of lubrication.

• Universal Field Replacement: Direct drop-in compatibility for the Danfoss 060B017266, minimizing downtime during emergency service calls.
• Multi-Refrigerant Support: Approved for use with a wide array of gases including R404A, R134a, R22, R407C, and R507.
• Precision Safety Logic: Separated safety and operational circuits facilitate clear troubleshooting and auxiliary alarm signaling via SPDT contacts.
• Rugged Enclosure: Rated IP20 with a maximum working pressure (MWP) of 245 psig, engineered for demanding machine room conditions.

Is the time relay adjustable on this model?
No, the 060B017291 features a fixed 90-second thermal time relay. For applications requiring different delay intervals, verify the specific MP55 variant needed.

What is the proper way to conduct a function test?
A veteran tech knows to use the internal test device. By depressing the test lever, you simulate a pressure drop; the compressor should cut out exactly after the 90-second delay elapses.

Does this switch support ammonia (R717) systems?
The standard MP55 is intended for fluorinated refrigerants. For ammonia applications, a Danfoss MP55A with stainless steel bellows is typically required to prevent corrosion.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.