Product details
Danfoss MP55 Differential Pressure Switch | Oil Safety Control | 060B017391
Product Description: The MP55 (060B017391) is a specialized safety control that monitors the lubricating oil pressure within a compressor. In the high-intensity refrigeration environments of the UAE—such as fast-cooling facilities in Dubai or high-turnover supermarkets—ensuring the compressor never runs without oil is vital. This model features a 45-second delay, the shortest in the standard range, making it ideal for high-speed compressors or systems that require a tighter safety window. It measures the pressure difference between the oil pump and the crankcase; if this falls below the setpoint for more than 45 seconds, the switch trips, protecting the compressor from mechanical seizure.
Key Features & Benefits:
- Fast 45-Second Time Delay: Offers a quick response to lubrication failure, providing an extra layer of protection for sensitive or high-speed compressors used in UAE plants.
- Critical Component Safety: Effectively prevents catastrophic compressor failure due to low oil levels, blocked filters, or pump malfunctions.
- Broad Media Compatibility: Suitable for use with standard HCFC and non-flammable HFC refrigerants common in the Middle Eastern HVAC/R market.
- Rugged SPDT Contact System: Designed for reliability within electrical control panels, ensuring a clear signal for both compressor cutout and alarm notification.
- Vibration Resistant: Engineered to maintain precise switching points despite the constant mechanical vibration of industrial-grade machinery.
Technical Specifications:
| Specifications | Value |
| Manufacturer | Danfoss |
| Series | MP55 |
| Code Number | 060B017391 |
| Differential Range $\Delta p$ | 0.30 – 4.50 bar |
| Time Relay Delay | 45 Seconds |
| Max. Working Pressure | 17 bar (245 psig) |
| Contact Function | SPDT |
| Enclosure Rating | IP20 |
FAQs:
- Q: Why would I choose the 45-second delay (060B017391) over longer versions?
- A: The 45-second delay is used for compressors that are highly sensitive to lubrication loss, where even a short period of low oil pressure could cause significant wear.
- Q: Can this switch handle the heat in Abu Dhabi industrial zones?
- A: Yes, but as it is a thermal relay-based switch, it should be installed in a ventilated control panel to ensure the time delay remains consistent with its factory calibration.
- Q: Is there a manual reset for this switch?
- A: Yes, once the switch trips, it requires a manual reset by a technician, ensuring the underlying oil pressure problem is addressed before the system restarts.
