061B000066 Danfoss MBC5100 Pressure Switch

Product Overview

The 061B000066, 061B000166, 061B000266, 061B1004, 061B0010 and 061B110866 belong to the Danfoss MBC 5100 series of modular pressure switches. Designed for heavy industrial and marine applications, these switches use bellows sensing elements for high repeatability and reliable switching. Featuring automatic reset, IP65 enclosure and multiple marine approvals, they are fully interchangeable with original Danfoss units and undergo 100% simulated operating-condition testing for pressure monitoring and protection in hydraulic, pneumatic and marine systems.

Technical Specifications 

• Model: 061B000066 / 061B000166 / 061B000266 etc. (MBC 5100 series)
• Type: Modular pressure switch
• Regulation range: typically –0.2 to 10 bar or 5–30 bar (model-dependent)
• Maximum working pressure: 15–45 bar (model-dependent)
• Burst pressure: 30–90 bar
• Sensing element: Bellows
• Contact function: SPDT
• Contact rating: AC15 0.5 A / 250 V; DC13 12 W / 125 V
• Reset function: Automatic
• Pressure connection: G1/4 (ISO 228-1)
• Enclosure rating: IP65
• Ambient temperature: –40 to +85 °C
• Approvals: ABS, BV, DNV, CCS, CE, LR and other marine certifications

Key Technical Advantages

1. High repeatability: Bellows sensing design provides precise and consistent switching for accurate pressure monitoring.
2. Marine-grade robust construction: IP65 protection, vibration resistance and multiple classification society approvals for harsh environments.
3. True interchangeability and modular design: Identical interfaces and setting ranges to original Danfoss MBC 5100 enable direct drop-in replacement.
4. 100% functional verification under simulated conditions: Every unit is fully tested across pressure switching and environmental conditions before shipment.

Application Areas

• Pressure protection on marine hydraulic and cooling systems
• Industrial hydraulic power units and pump stations
• Compressors and refrigeration systems
• Construction machinery and mobile equipment
• Applications requiring marine-approved pressure switches

Expert Maintenance Tips

Ensure reliable sealing at the pressure connection using the correct gasket. Observe contact ratings during electrical wiring. Periodically check set-point and differential for drift. Maintain clean system media. For long-term storage keep dry. Always confirm regulation range compatibility before replacement; never exceed the maximum working pressure.