MBC5100-1411-1CB04 MBC5100-5451-1CB04 061B000466 Danfoss Pressure Switch 600 bar

Product Overview

The MBC 5100 series compact pressure switches are block-type compact pressure switches engineered by Danfoss for industrial and marine applications, specifically designed for harsh conditions including the high-vibration environments of ship engine rooms.

The MBC 5100 series offers high vibration resistance and features all common marine approvals (including ABS, BV, DNV, GL, LR, RINA, etc.). The fixed, low differential guarantees accurate monitoring of critical pressures.

This product range covers the following models:

• MBC5100-1411-1CB04 / 061B000066: Range -0.2–10 bar, differential 0.4–0.6 bar, bellows sensing element

• MBC5100-1211-1DB04 / 061B000466: Range -0.2–4 bar, differential 0.3–0.45 bar, bellows sensing element

• MBC5100-5451-1CB04 / 061B510166: Range 25–250 bar, differential 20–40 bar, piston sensing element, max operating pressure 600 bar

• 061B008566: Range -0.2–4 bar, M10×1 pressure connection, bellows sensing element

⚠️ Brand and Model Attribution Note:

• MBC 5100 is the Danfoss block-type compact pressure switch series

• MBC 8100 is the Danfoss block-type compact temperature switch series

• 061Bxxxxxx are Danfoss internal material codes (Product Codes)

⚠️ Model Code Decoding (using MBC5100-1411-1CB04 as example) :

• MBC = Block-type Compact Pressure Switch

• 5100 = Series code (Marine & Industrial applications)

• 1411 = Specification code (range, sensing element type, etc.)

• 1CB04 = Configuration/design code

• 061B000066 = Danfoss internal material number

Technical Specifications 

MBC5100-1411-1CB04 / 061B000066

• Product Series: Danfoss MBC 5100 series compact pressure switch

• Model Code: MBC5100-1411-1CB04

• Material Number: 061B000066

• Brand: Danfoss

• Product Type: Block-type compact pressure switch

• Regulation Range: -0.2 – 10 bar

• Differential (Pmin–Pmax) : 0.4 – 0.6 bar

• Sensing Element: Bellows

• Contact Form: 1 x SPDT

• Contact Rating: AC15=0.5 A / 250 V; DC13=12 W / 125 V

• Reset Function: Auto

• Ambient Temperature Range: -40°C to +85°C

• Max. Working Pressure: 15 bar

• Burst Pressure: 30 bar

• Pressure Connection: G1/4″ female

• Electrical Connection: DIN plug Pg11

• Enclosure Rating: IP65

• Approvals: CE, Marine Approvals

MBC5100-1211-1DB04 / 061B000466

• Product Series: Danfoss MBC 5100 series compact pressure switch

• Model Code: MBC5100-1211-1DB04

• Material Number: 061B000466

• Brand: Danfoss

• Product Type: Block-type compact pressure switch

• Regulation Range: -0.2 – 4 bar

• Differential (Pmin–Pmax) : 0.3 – 0.45 bar

• Sensing Element: Bellows

• Contact Form: 1 x SPDT

• Contact Rating: AC15=0.5 A / 250 V

• Reset Function: Auto

• Ambient Temperature Range: -40°C to +85°C

• Max. Working Pressure: 15 bar

• Burst Pressure: 30 bar

• Pressure Connection: G1/4″ female

• Electrical Connection: DIN plug Pg11

• Enclosure Rating: IP65

• Approvals: CE, Marine Approvals

MBC5100-5451-1CB04 / 061B510166

• Product Series: Danfoss MBC 5100 series compact pressure switch

• Model Code: MBC5100-5451-1CB04

• Material Number: 061B510166

• Brand: Danfoss

• Product Type: Block-type compact pressure switch

• Regulation Range: 25 – 250 bar

• Differential (@Min–@Max setting) : 20 – 40 bar

• Sensing Element: Piston

• Contact Form: 1 x SPDT

• Contact Rating: AC15=0.5 A / 250 V; DC13=12 W / 125 V

• Reset Function: Auto

• Max. Working Pressure: 600 bar

• Test Pressure: 600 bar

• Burst Pressure: 1200 bar

• Ambient Temperature Range: -40°C to +85°C

• Pressure Connection: G1/4″ female (ISO 228-1)

• Electrical Connection: DIN plug Pg11 (EN 175301-803-A)

• Enclosure Rating: IP65

• Approvals: ABS, BV, CCC, CCS, CE, DNV, GL, LR, NKK, RINA, etc.

• Weight: Net approx. 0.256 kg

Key Technical Advantages

1. High Vibration Resistance with Full Marine Approvals

The MBC 5100 series is specifically designed for high-vibration environments such as ship engine rooms. It features all major marine classification society approvals (ABS, BV, DNV, GL, LR, NKK, RINA, etc.), making it the preferred choice for pressure monitoring in marine and offshore applications.

2. Compact Block-Type Design for Space-Saving Installation

The MBC 5100 series features a compact block-type design and is part of the Danfoss “block system”. Compared to conventional pressure switches, the footprint is significantly reduced—ideal for space-constrained installations.

3. Fixed Low Differential for Accurate Monitoring

The MBC 5100 series features a fixed, low differential design. This ensures accurate monitoring of critical pressures, eliminating monitoring blind spots caused by excessive differentials. Particularly suitable for applications requiring high-precision pressure monitoring.

4. Dual Sensing Element Technologies for Wide Pressure Range Coverage

The MBC 5100 series offers bellows-type (-0.2–10 bar low-pressure range) and piston-type (25–250 bar high-pressure range) sensing element technologies. Low-pressure models offer max working pressure of 15 bar, while high-pressure models offer 600 bar max working pressure. Complete coverage from vacuum to ultra-high pressure for diverse applications.

5. SPDT Contact with IP65 Protection

The MBC 5100 series features SPDT (Single Pole Double Throw) contacts with contact ratings AC15=0.5A/250V and DC13=12W/125V. With IP65 enclosure rating, it operates reliably in dusty, splash-water, and harsh environments.

6. 100% Direct Interchangeability and Simulated Condition Testing

The MBC 5100 series strictly adheres to Danfoss original mounting dimensions and interface standards (G1/4″ pressure connection, DIN plug Pg11 electrical connection), enabling direct drop-in replacement of original pressure switches without piping modification or system adjustment. Every unit undergoes 100% simulated operating condition bench testing prior to shipment.

Application Areas

• Marine & Offshore: Engine room pressure monitoring, ballast water systems, fuel oil systems, lubrication oil systems

• Industrial Hydraulic Systems: System pressure monitoring and limit alarming for hydraulic power units and stations

• Construction Machinery: Pressure protection for excavators, wheel loaders, and other mobile equipment

• Compressed Air Systems: Compressor discharge pressure monitoring and control

• Process Industries: Process pressure monitoring and alarming in chemical and pharmaceutical industries

• Power Generation: Lubrication oil pressure and cooling water pressure monitoring for diesel generator sets

Expert Maintenance Tips

1. Verify Model and Range Compatibility Prior to Installation

The MBC 5100 series offers multiple regulation ranges (-0.2–1 bar, -0.2–4 bar, -0.2–10 bar, 25–250 bar, etc.). Confirm that the range indicated in the model code covers the system operating pressure. High-pressure models (061B510166) offer max working pressure of 600 bar; low-pressure models offer max working pressure of 15 bar.

2. Correct Installation Torque and Sealing

The MBC 5100 series features G1/4″ female thread pressure connections. Use a torque wrench during installation to the torque value specified in Danfoss technical manuals. Use OEM-specification O-rings or bonded sealing washers—PTFE tape must not be used (it may block internal sensor passages). Ensure piping is clean prior to installation to prevent debris from damaging the sensing element (bellows or piston).

3. Electrical Connection Precautions

The MBC 5100 series features DIN plug Pg11 electrical connections. Contact form is SPDT (Single Pole Double Throw)  with contact rating AC15=0.5A/250V, DC13=12W/125V. Verify load current and voltage do not exceed contact ratings prior to wiring.

4. Mounting Position and Vibration Protection

The MBC 5100 series offers high vibration resistance and can be mounted in any orientation. For extreme vibration applications, mechanical decoupling via flexible pressure hose connection is recommended.

5. Periodic Functional Checks

Perform functional checks every 2,000 operating hours or annually to verify switching point accuracy and contact reliability. The MBC 5100 series features automatic reset function—verify reset pressure remains within specification during inspection. If set-point drift or poor contact is observed, arrange for servicing or replacement.