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Danfoss MBC 5100 Pressure Switch 061B010266 | Marine Spares

Item Code:

Danfoss MBC 5100 Pressure Switch

Brand:

Danfoss A/S

Condition:

New product


Danfoss MBC 5100 Pressure Switch 061B010266 – Marine Pressure Control, Spare Parts & Troubleshooting

Product Information

Specification

Details

Manufacturer

Danfoss A/S

Manufacturer Headquarters

Nordborg, Denmark

Product Name

MBC 5100 Pressure Switch

Product Series

MBC 5000 / MBC 5100

Code Number

061B010266

Specification Key

1411-2DB04

Product Type

Heavy-Duty Electromechanical Pressure Switch

Regulation Range

−0.2 to +10 bar

Maximum Working Pressure

15 bar

Contact Function

SPDT (Single Pole Double Throw)

Reset Function

Automatic

Enclosure Rating

IP65

Pressure Connection

G 1/4, female, with flange

Electrical Connection

DIN plug

Country of Manufacture

Poland, as marked on the supplied product

Product Condition

New, in original Danfoss box, as supplied

Availability

Subject to stock confirmation

Worldwide Supply

International shipping enquiries accepted

The equipment identification is based on the supplied product labels and official Danfoss specifications.

The exact code number 061B010266 is particularly important because different MBC 5100 versions may have different pressure ranges, connections, switching characteristics and specifications.

Product Introduction

The Danfoss MBC 5100 Pressure Switch, Code 061B010266, is a compact, heavy-duty electromechanical pressure-control device designed for demanding industrial and marine environments.

Manufactured by Danfoss, a Denmark-based engineering company, the MBC 5100 series is designed for applications where reliable pressure monitoring and electrical switching are required.

This particular version offers an adjustable regulation range from −0.2 to 10 bar, with a maximum working pressure of 15 bar.

The switch can be integrated into suitable pressure-monitoring, alarm, interlock and control circuits.

Its robust construction, IP65 protection, automatic reset and industrial electrical contacts make it relevant to machinery installations exposed to vibration, moisture and demanding operating conditions.

SM MARINE SERVICE™ supports international enquiries for the Danfoss MBC 5100 pressure switch, replacement units and related marine instrumentation spare parts.

Website: **https://www.smmarineservice.com/**

What Is the Danfoss MBC 5100 Pressure Switch?

The Danfoss MBC 5100 is an electromechanical device that changes the state of an electrical contact when the monitored pressure reaches a defined switching point.

Unlike a pressure transmitter, which continuously produces an electrical measurement signal, a pressure switch responds to an adjusted pressure threshold by opening or closing a contact.

The MBC 5100 uses a mechanical pressure-sensing element connected to an electrical switching mechanism.

For this version, Danfoss identifies a bellows-type pressure-sensing element and a single-pole double-throw (SPDT) contact arrangement.

This allows the switch to be used in control circuits designed to initiate an alarm, activate a relay, operate a pump-control function or signal an abnormal pressure condition.

The exact action depends on how the contact is wired and how the pressure set point and switching differential are adjusted.

In marine engine rooms, pressure switches form part of numerous monitoring and machinery-control arrangements.

A suitable switch may be used to detect low lubricating-oil pressure, cooling-water pressure changes or abnormal pressure in auxiliary machinery systems.

However, the correct pressure range, contact characteristics and approval requirements must be confirmed for every installation.

Main Features

Heavy-Duty Block-Type Construction

The MBC 5100 features a compact block-type construction designed for robust machinery installations.

Its design is intended to withstand challenging operating environments, including vibration and mechanical stress.

Adjustable Pressure Range

The 061B010266 version provides a pressure regulation range of −0.2 to +10 bar.

This allows it to be configured for various suitable pressure thresholds within the specified range.

Automatic Reset

The switch uses an automatic reset arrangement.

When pressure returns across the relevant switching threshold, the contact returns according to the switch's adjusted differential and operating characteristics.

SPDT Electrical Contacts

The single-pole double-throw contact arrangement enables the switch to change between two electrical contact paths.

This can support compatible alarm and control circuits.

IP65 Enclosure Protection

The IP65 enclosure rating provides protection against dust ingress and water jets when the switch and electrical connection are correctly assembled.

It does not make the device suitable for unrestricted immersion.

DIN Electrical Connection

The switch uses a DIN-style electrical connector designed for industrial control installations.

The supplied product photograph shows a compatible plug connector among the packaged components.

Wide Ambient Temperature Range

Danfoss specifies an ambient operating range of −40°C to +85°C for this model.

This helps make it suitable for relevant marine and industrial machinery environments.

Main Technical Specifications

Technical Parameter

Danfoss MBC 5100 – 061B010266

Manufacturer

Danfoss

Model

MBC 5100

Code Number

061B010266

Specification Key

1411-2DB04

Regulation Range

−0.2 to +10 bar

Regulation Range in MPa

−0.02 to +1.0 MPa

Maximum Working Pressure

15 bar

Minimum Burst Pressure

30 bar

Differential at Minimum Range Setting

0.40 bar

Differential at Maximum Range Setting

0.60 bar

Contact Function

SPDT

Reset Function

Automatic

Contact Rating AC-15

0.5 A at 250 V

Contact Rating DC-13

12 W at 125 V

Electrical Connection

DIN plug

Electrical Connection Standard

EN 175301-803-A

Cable Entry / Connection Size

M20

Pressure Connection

G 1/4 female, with flange

Pressure Connection Standard

ISO 228-1

Pressure-Sensing Element

Bellows

Protection Rating

IP65

Ambient Temperature

−40°C to +85°C

Electrical Standard

EN 60947-5

Net Weight

Approximately 0.278 kg

Country of Manufacture

Poland, according to supplied unit label

These specifications correspond to Danfoss's official product record for code 061B010266.

Danfoss Design Center

 

Important: The 30 bar burst-pressure figure is not an operating-pressure rating. The specified maximum working pressure for this product is 15 bar.

Main Components & Associated Part Numbers

The Danfoss MBC 5100 is an integrated electromechanical switching device. Its pressure-sensing and contact mechanisms are housed within the main switch body.

Pressure-Sensing Bellows

The bellows responds mechanically to changes in the monitored pressure.

As the pressure increases or decreases, the mechanism causes the electrical contact to change state at its adjusted switching threshold.

SPDT Electrical Contact

The internal single-pole double-throw contact provides a switching signal to an external control or monitoring circuit.

It may be connected to an alarm relay, pump-control circuit or machinery safety system, provided the electrical installation is suitable.

Pressure Adjustment Mechanism

The switch incorporates an adjustment mechanism used to set the desired pressure threshold within its specified operating range.

The switching differential must also be considered when selecting the required operating point.

DIN Electrical Connector

The DIN connector provides the electrical connection between the switch and the external control system.

Correct gasket installation, cable entry sealing and connector assembly are important for maintaining the intended IP65 protection.

G 1/4 Pressure Connection

The MBC 5100 variant identified as 061B010266 uses a G 1/4 female pressure connection with flange.

Buyers must verify the mating pressure connection and mounting arrangement before ordering.

Supplied Accessories

According to the provided product information, the boxed unit includes the pressure switch, DIN plug connector with cable gland, mounting screws and an instruction leaflet.

The exact contents of an individual package should be confirmed before shipment.

Related Danfoss Pressure Switch Models

The Danfoss MBC 5100 series includes multiple versions designed for different pressure ranges and installation requirements.

Danfoss Code

Model / Family

Pressure Range

061B010266

MBC 5100 – 1411-2DB04

−0.2 to 10 bar

061B000066

MBC 5100 – 1411-1CB04

−0.2 to 10 bar

061B000266

MBC 5100 – 1411-1DB04

−0.2 to 10 bar

061B000466

MBC 5100 – 1211-1DB04

−0.2 to 4 bar

061B000566

MBC 5100 – 1011-1DB04

−0.2 to 1 bar

061B510266

MBC 5100 high-pressure version

40 to 400 bar in the referenced Danfoss ordering data

Danfoss also manufactures the MBC 5180 differential pressure switch and other pressure-control product families.

The related products listed above are for identification and comparison. They are not automatically interchangeable with code 061B010266.

Differences in pressure range, sensing mechanism, pressure connection and electrical characteristics must be checked before selecting a replacement.

Marine & Industrial Applications

The MBC 5100 series is designed for demanding pressure-control applications and is relevant to marine machinery installations.

Potential applications for appropriately selected pressure switches include the following.

Marine Lubricating-Oil Systems

Pressure switches are used in suitable engine monitoring circuits to indicate low lubricating-oil pressure or provide a signal to an associated alarm or protection system.

The switching set point and safety configuration must match the engine manufacturer's requirements.

Marine Cooling-Water Systems

A pressure switch may be used to supervise cooling-water pressure in engine cooling circuits.

This can help identify a loss of pressure associated with a pump problem, leakage or another abnormal operating condition.

Air Compressors and Pneumatic Systems

Pressure switches may be used in compatible compressor-control or compressed-air monitoring circuits.

The selected switch must be suitable for the required pressure range, differential and operating environment.

Pump-Control Systems

An MBC 5100 can be incorporated into an appropriately designed pump-control arrangement, including pressure monitoring and relay switching.

Fuel-Oil Systems

Pressure switches may be used in compatible fuel-oil pressure-monitoring arrangements, provided material compatibility, pressure limits and safety requirements are verified.

Marine Auxiliary Machinery

Other relevant applications include suitable hydraulic equipment, auxiliary machinery monitoring and engine-room automation systems.

Application warning: These are possible applications of the pressure-switch product category. The 061B010266 must not be assumed suitable for every system without checking the fluid, operating pressure, set point, electrical load and approval requirements.

Common Problems & Troubleshooting

Problem

Possible Cause

Recommended Check

Pressure alarm does not activate

Incorrect setting, damaged contacts or circuit fault

Verify pressure and switching response

False pressure alarm

Incorrect set point, pressure fluctuation or electrical issue

Compare with an approved pressure gauge

Switch does not reset

Pressure has not crossed the reset threshold or mechanism fault

Check pressure and differential

Intermittent contact operation

Loose connector, vibration or contact deterioration

Inspect electrical connections

Incorrect switching pressure

Misadjustment or sensing-element problem

Arrange controlled testing

Water ingress

Damaged connector gasket or incorrect assembly

Inspect enclosure sealing

Pressure leakage

Incorrect mounting or damaged sealing arrangement

Inspect the pressure connection

Switch remains in one contact state

Mechanical or electrical fault

Perform qualified pressure and continuity testing

These are general diagnostic possibilities, not confirmed faults of the supplied product.

Pressure Switch Does Not Reset

The MBC 5100-061B010266 has automatic reset.

However, automatic reset does not mean that the switch will immediately return to its original contact state as soon as pressure begins to change.

The pressure must cross the relevant switching threshold, accounting for the switch differential.

For this specific version, Danfoss lists a differential of approximately 0.40 to 0.60 bar, depending on the range setting.

Frequent False Pressure Alarms

Repeated pressure alarms can originate from pressure fluctuations, incorrect adjustment, damaged wiring, switching-contact problems or actual machinery operating conditions.

The monitored pressure should be checked with a suitable reference instrument before the switch is identified as faulty.

Electrical Contact Failure

The electrical contact must operate within its rated electrical limits.

Excessive load current or an unsuitable switching circuit can damage contacts and reduce reliable operation.

For the 061B010266, Danfoss specifies AC-15 and DC-13 contact ratings. Different electrical load categories must not be treated as interchangeable.

Maintenance and Testing Safety

Before removing or testing a pressure switch, isolate the electrical circuit and safely depressurise the connected process line.

Use an appropriate calibrated pressure source and test instrument when verifying the switching point.

Never bypass an engine shutdown or alarm circuit merely to test the switch.

The switch is a sealed, non-serviceable product according to Danfoss's product record. Internal repair should not be assumed to be supported.

Maintenance Tips

The Danfoss MBC 5100 is designed for robust operation, but regular external inspection is valuable.

Recommended practices include:

  • Inspect the switch housing for damage or corrosion.

  • Check the DIN connector and cable gland for secure assembly.

  • Verify that cable insulation and connections remain in good condition.

  • Look for leaks around the pressure connection.

  • Check the alarm or control response using approved maintenance procedures.

  • Record actual switching pressures during periodic testing where required.

  • Keep the surrounding equipment free of excessive contamination.

  • Confirm the model and code number before replacement.

The switch should be replaced rather than internally dismantled when the manufacturer identifies it as non-serviceable and its operation cannot be restored through permitted external checks.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supports international enquiries for the Danfoss MBC 5100 Pressure Switch, Code 061B010266, and related marine pressure-control equipment.

The supplied stock information identifies a new, boxed Danfoss MBC 5100 pressure switch with the specification key 1411-2DB04.

Customers may enquire about:

  • Complete MBC 5100 pressure switch 061B010266.

  • Identical replacement pressure switches.

  • Compatible DIN plug connectors.

  • Mounting and connection accessories.

  • Alternative MBC 5100 pressure ranges.

  • MBC 5000 pressure-switch variants.

  • MBC 5180 differential pressure switches.

  • Other verified Danfoss marine pressure-control products.

The exact availability of additional ranges and components must be confirmed individually.

New Danfoss MBC 5100 – Stock Enquiry

The featured product is described in the supplied inventory information as new and packaged in its original Danfoss box.

The actual current quantity, packaging condition and any testing or warranty arrangements should be confirmed when requesting a quotation.

Replacement Compatibility

Even where two Danfoss switches have the same pressure range, they may differ in pressure connection, electrical arrangement, contact characteristics or other technical details.

Therefore, buyers should match the complete code number and specification key.

Information Required for Quotation

International buyers should provide the full Danfoss code number, specification key, required quantity, pressure range, connection details and delivery destination.

For a replacement installation, include the original equipment nameplate information and machinery application.

Contact SM MARINE SERVICE™: https://www.smmarineservice.com/

Why Marine Engineers Use Danfoss MBC 5100 Pressure Switches

The MBC 5100 series combines compact construction, industrial electrical contacts and a pressure-sensing mechanism designed for demanding installations.

For ships and industrial facilities, this type of switch provides a straightforward method of converting pressure conditions into electrical alarm or control signals.

The availability of different pressure ranges allows engineers to select a suitable variant for specific machinery requirements.

However, correct part-number selection remains essential, especially where a pressure switch forms part of an engine protection system.

Frequently Asked Questions

What is the Danfoss MBC 5100?

It is a heavy-duty electromechanical pressure switch designed to change an electrical contact state at an adjusted pressure threshold.

What is Danfoss code 061B010266?

It identifies the MBC 5100 version with specification key 1411-2DB04.

What is the pressure range of 061B010266?

The regulation range is −0.2 to +10 bar.

What is the maximum working pressure?

The maximum working pressure is 15 bar.

Does the MBC 5100 reset automatically?

Yes. This particular version has an automatic reset function.

What is the contact configuration?

It uses an SPDT electrical contact.

What is the enclosure protection rating?

The product has an IP65 rating when correctly installed and assembled.

What pressure connection does it use?

The 061B010266 has a G 1/4 female pressure connection with flange.

Can I use the MBC 5100 for marine lubricating-oil monitoring?

It may be suitable for an appropriately designed system, depending on the required set point, fluid compatibility, approval and engine specifications.

What causes an MBC 5100 pressure switch not to reset?

Possible causes include pressure remaining within the switching differential, incorrect adjustment or a mechanical/contact fault.

Where can I buy Danfoss MBC 5100 code 061B010266?

Contact SM MARINE SERVICE™ for product availability, price and worldwide shipping information.

Can SM MARINE SERVICE™ supply different MBC 5100 ranges?

The company accepts sourcing enquiries for other Danfoss MBC 5100 versions, subject to availability and technical identification.

Short Product Description

The Danfoss MBC 5100 Pressure Switch, Code 061B010266, Specification Key 1411-2DB04, is a heavy-duty electromechanical pressure switch suitable for appropriately designed marine and industrial pressure-monitoring applications. It offers an adjustable pressure range of −0.2 to 10 bar, 15 bar maximum working pressure, automatic reset, SPDT contacts, a G 1/4 female connection with flange and IP65 enclosure protection. The supplied product is described as new in its original Danfoss packaging. SM MARINE SERVICE™ supports international enquiries for this exact pressure switch, related Danfoss components and marine instrumentation spare parts. Buyers should verify the complete model code and technical compatibility before ordering.

 

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Available Equipment Conditions:
New Equipment • Used Equipment • Refurbished Equipment • Reconditioned Equipment

Specific product condition and availability are subject to confirmation.

Stock Locations:
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Services:
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Contact Information

SM MARINE SERVICE™
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com

For quotations regarding Danfoss MBC 5100 pressure switch 061B010266, compatible pressure-monitoring components or other marine and industrial equipment, contact SM MARINE SERVICE™ with the required part number, quantity and shipping destination.


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