Description
📌 Product Overview
The MAN B&W 3157168-7 is an SBU Module used in marine diesel engine control applications. SBU is commonly identified as a Switch Board Unit, providing switching, relay, and interface functions within the associated marine engine control system.
The module is associated with MAN B&W marine equipment and is also referenced with identifiers including SBU-0240-C, 1142355-6, P.D. No. 15.0011.0, and Revision 1.2. Available identification records also associate this module with marine engine and Alpha Lubricator control applications.
This is a specialized marine control component. The complete model number and hardware revision should be checked carefully before replacement because similar SBU modules may have different electrical interfaces or system functions.

⚙️ Key Features
⚓ Designed for marine diesel engine control applications
🔌 12 VDC relay and control interface design
🔄 SBU / Switch Board Unit configuration
🧩 Relay and terminal-board functionality
⚙️ Supports switching and signal interface functions
🚢 Suitable for MAN B&W marine engine systems
🔧 Associated with SBU-0240-C identification
📋 Revision-controlled marine control hardware
🛠️ Suitable for maintenance and replacement applications
📦 Legacy marine automation spare part
📋 Product Datasheet
🏷️ Brand: MAN B&W
🔢 Model: 3157168-7
📚 Series: SBU Module / SBU-0240-C
🧩 Product Name: Switch Board Unit / SBU Module
⚙️ Primary Function: Marine Engine Control and Switching Interface
🔌 Control Voltage: 12 VDC configuration
🔄 Output Function: Relay and switching control
📡 Application: Marine diesel engine control systems
🚢 Typical Equipment: MAN B&W marine engine installations
🔖 Related Module Number: 1142355-6
📄 P.D. Number: 15.0011.0
🔧 Documented Revision: Rev. 1.2
🏭 Associated PCB Standard: 94V-0 PCB construction marking
⚓ System Application: Marine automation and engine auxiliary control
⚖️ Approximate Weight: 3.5 kg
📦 Product Status: Legacy marine control component
🌍 Country of Origin: Verify from the physical product label and shipping documentation
⚡ Power Consumption: Not reliably confirmed from available technical identification data
📏 Dimensions: Verify from the physical unit before shipment or installation
The available identification information confirms the part number 3157168-7 and related SBU-0240-C / 1142355-6 / P.D. 15.0011.0 markings. A listed unit has also been documented with an approximate weight of 3.5 kg.
⚙️ Functional Description
The SBU Module is used as part of the electrical interface and switching architecture of a marine engine control system. Its relay and terminal-board arrangement allows control signals to be routed between the engine control equipment and associated electrical circuits.
Depending on the complete engine-control configuration, the module may be used for signal switching, relay control, external device interfacing, and system status connections.
The exact function of each terminal and relay should always be verified against the wiring documentation for the specific vessel and engine installation.
🚢 Typical Applications
⚓ Marine diesel engine control systems
🛢️ Marine propulsion equipment
⚙️ MAN B&W engine automation systems
🔄 Switching and relay interface circuits
🚢 Ship engine-room control cabinets
🔧 Alpha Lubricator-related control systems
🛠️ Marine equipment maintenance
📦 Critical onboard spare-parts inventory
🛠️ Installation and Replacement Notes
Before replacing the module, isolate the relevant marine control system according to vessel safety procedures.
🔧 Confirm the complete part number: 3157168-7.
🔧 Check related markings such as SBU-0240-C and 1142355-6.
🔧 Verify the documented revision before replacement.
🔧 Photograph all terminal and connector wiring before removal.
🔧 Confirm the 12 VDC control configuration.
🔧 Inspect relay terminals for corrosion or mechanical damage.
🔧 Check the module connector arrangement against the original unit.
🔧 Verify all switching and interface circuits after installation.
🔧 Perform a controlled functional test before returning the engine system to normal operation.
⚠️ Do not select a replacement based only on the term “SBU Module.” The complete model number, revision, connector arrangement, and vessel-specific control configuration should be matched.
🔍 Identification Guide
When checking the existing module, look for the following markings:
3157168-7
SBU MODUL
SBU-0240-C
1142355-6
P.D. 15.0011.0
Rev. 1.2
The complete identification marking is important because marine control modules can have similar external appearances while serving different engine-control functions.
❓ FAQ
Q: What is the MAN B&W 3157168-7?
A: It is an SBU Module used as a switching and control interface component in MAN B&W marine engine-related control systems.
Q: What does SBU mean?
A: Available marine equipment references identify SBU as a Switch Board Unit or switching-board module.
Q: Is the 3157168-7 a PLC CPU?
A: No. It is a dedicated marine control and switching module rather than a general-purpose PLC processor.
Q: What voltage configuration is associated with this module?
A: The product identification is commonly associated with a 12 VDC relay/control configuration. The exact terminal supply requirements should still be verified against the installed vessel documentation.
Q: What is SBU-0240-C?
A: SBU-0240-C is a related module identification associated with the 3157168-7 assembly.
Q: What is the related number 1142355-6?
A: It is another identification number documented in connection with the SBU-0240-C / 3157168-7 module assembly.
Q: Can another SBU module directly replace 3157168-7?
A: Not automatically. The complete part number, revision, electrical configuration, terminal arrangement, and engine-control application should be verified before substitution.
Q: What should be checked before purchasing a replacement?
A: Check the full model number 3157168-7, revision, SBU-0240-C marking, 1142355-6 reference, connector layout, relay configuration, and compatibility with the existing MAN B&W engine control system.
🔄 Other MAN B&W Marine Control Models
- MAN B&W 3157167-5 – MCU Module
- MAN B&W 3157168-7 – SBU Module
- MAN B&W 1142355-6 – SBU-0240-C Related Module Assembly
- MAN B&W SBU-0240-C – Switch Board Unit
- MAN B&W 14.0240.0 – Marine Control Module Reference
- MAN B&W Alpha Lubricator Control Unit – Marine Lubrication Control System
- MAN B&W MCU Module – Marine Engine Control Module
- MAN B&W Engine Interface Module – Marine Control Interface
- MAN B&W Relay Control Board – Marine Engine Switching Board
- MAN B&W Marine Engine Controller Module – Engine Automation Control Component
⚠️ These models and descriptions should be treated as related marine control equipment. They are not automatically interchangeable with 3157168-7 without checking the complete vessel and engine documentation.
🏷️ Recommended Short Title
MAN B&W | 3157168-7 | SBU Module Marine Engine Control Board
