KONGSBERG NORCONTROL DC/DC Power Supply
CCI Power Supplies LLC
New product
The CCI Power Supplies LLC VT25-373-99/X9 is a multi-output DC/DC power supply module widely encountered in legacy Kongsberg / Norcontrol marine automation equipment.
The SM MARINE SERVICE™ stock photograph clearly shows the original product label with the following specifications:
Manufacturer: CCI Power Supplies LLC
Model: VT25-373-99/X9
Input: 20–60 VDC, 3A
Output V1: 5VDC / 4A
Output V2: +15VDC / 0.5A
Output V3: −15VDC / 0.5A
Output V4: RET
Group Code: PS8
Compliance: RoHS Compliant
Independent marine-equipment references identify the same model as a Kongsberg / Norcontrol marine automation power supply, including use with the SAU-8810 Signal Acquisition Unit.
The VT25-373-99/X9 is a DC/DC converter power supply.
Its basic purpose is to accept a relatively wide DC input range and generate several regulated lower-voltage power rails required by control electronics.
The unit accepts:
and provides:
plus:
This combination is especially useful in control systems containing digital logic, analogue circuits, processor boards and I/O electronics that require several different supply voltages.
A current marine listing independently confirms these exact input and output ratings.
Marine automation systems frequently combine different electronic circuit types.
For example:
5VDC may be used by digital logic or processor circuitry.
+15VDC and −15VDC are commonly required by analogue interface circuits, operational amplifiers or signal-conditioning electronics.
The VT25 therefore provides several regulated rails from one vessel/control-system DC source.
This is why a failure of the VT25 can sometimes make several apparently unrelated automation functions disappear at the same time.
Marine-spares databases repeatedly associate VT25-373-99/X9 with Kongsberg and Norcontrol automation hardware.
One listing identifies:
KONGSBERG & NORCONTROL
Model VT25-373-99/X9
SAU-8810
with the same 20–60VDC input and 5V/+15V/−15V output values.
Another detailed SAU-8810 listing identifies the unit inside a Norcontrol Signal Acquisition Unit containing associated I/O motherboard, digital I/O adaptor and processor-card hardware.
This makes the following exact searches highly relevant:
Norcontrol SAU-8810 Power Supply
Kongsberg SAU-8810 PSU
VT25-373-99/X9 SAU Power Supply
One of the clearest documented applications for the VT25 is the:
A matching marine-equipment listing identifies the SAU-8810 together with:
VT25-373-99/X9
20–60VDC, 3A input
5VDC / 4A output
+15VDC / 0.5A output
−15VDC / 0.5A output
and internal modules such as NA1007.1, NN-801.1, NN-832.1 and NN-791.12.
This is strong evidence that the VT25 provides internal power for the SAU's electronic assemblies.
For marine spare-parts sourcing, SM MARINE SERVICE™ supports Kongsberg / Norcontrol power-supply enquiries through www.smmarineservice.com.
A current marine automation listing identifies this VT25 power supply as:
and describes it as a PSU for multiple Kongsberg/Norcontrol modules.
Therefore, 3800003 is an important procurement/search reference.
However, because this reference currently comes from aftermarket marine-spares documentation rather than a Kongsberg factory datasheet found in this research, buyers should verify the physical label and system documentation before ordering solely by 3800003.
Current aftermarket marine inventories associate the VT25-373-99/X9 with several legacy system names, including:
SAU
GCU
AutoChief
DataChief
OPU
SSU
DGU
One marine listing explicitly markets Kongsberg 3800003 VT25-373-99/X9 for these applications.
This is valuable for SEO because buyers may search for the system name instead of the VT25 model.
However, this should not be interpreted as universal plug-and-play compatibility with every SAU, GCU, AutoChief, DataChief, OPU, SSU or DGU revision.
Full system identification should always be confirmed.
Marine inventory records also associate the same VT25 model with:
A current listing describes a Kongsberg/Norcontrol GCU-8810 MODEL=VT25-373-99/X9 power supply entry.
This makes GCU-8810 power supply another useful related keyword.
The exact GCU hardware revision and wiring must still be matched before replacement.
Norcontrol was widely used in shipboard automation and monitoring systems, and many vessels still operate older control installations.
Legacy hardware may continue to require components such as:
Power Supplies
Signal Acquisition Units
I/O Cards
Processor Cards
Operator Panels
Governor / Generator Control Modules
For these systems, retaining an exact replacement VT25 unit can sometimes be preferable to redesigning the original electronics.
The VT25 accepts a relatively broad input range:
This provides flexibility in marine control-system DC supply environments.
The unit can then convert that incoming voltage to tightly defined lower-voltage rails needed by internal electronics.
The rated input current printed on the photographed unit is:
The same value is confirmed by multiple independent VT25 listings.
The largest rated output is:
This rail can support comparatively high-current digital electronic loads.
When the 5V supply fails, symptoms may include complete loss of processor or logic-card operation.
The second output is:
This voltage may support analogue, I/O or signal-conditioning circuits depending on the equipment.
The third output is:
Together with +15VDC, this forms a dual-polarity supply commonly used in analogue electronic circuitry.
The label identifies:
This is the return/reference connection associated with the output arrangement.
Exact pin assignments should be verified from the system wiring documentation before energizing a replacement unit.
The CCI VT25-373-99/X9 may be encountered in marine automation systems involving:
The exact application depends on vessel and system configuration.
First verify:
20–60VDC input supply
Input polarity
External fuse/protection
Connector condition
Correct system grounding/return
Only after confirming the input should the individual output rails be checked.
If:
5VDC is absent
while other rails are present, the fault may be inside the PSU or due to an overloaded 5V circuit.
Isolate the downstream load only according to the approved system troubleshooting procedure.
Loss of one analogue rail can create unusual faults where the system partly powers up but analogue or I/O functions do not operate correctly.
Check:
+15V rail
−15V rail
Connected load
Short circuit
Connector wiring
Possible areas to investigate include:
Excess load
Short circuit in a downstream card
Input voltage instability
Aged electrolytic capacitors
Thermal problems
Internal converter failure
A replacement power supply may also fail again if the real problem is a shorted downstream PCB.
Unstable DC rails can cause:
Processor resets
Communication interruptions
I/O loss
Intermittent alarm-system faults
Measure all output rails under load when troubleshooting intermittent system resets.
Check the VT25 input and each output before assuming the Signal Acquisition Unit motherboard or I/O cards are defective.
Because the SAU contains several internal electronic modules, loss of its central power supply may affect the entire assembly.
Before fitting a used or refurbished VT25, a suitable technician should inspect:
Electrolytic capacitors
Connectors and pins
Heat-damaged components
PCB discoloration
Loose mechanical parts
Output voltage stability
A no-load test alone may not reveal all faults.
Where possible, the unit should be tested at realistic electrical load before installation.
The photographed VT25 electronics are shown on an anti-static bag, which is appropriate handling practice.
For marine electronics:
Use ESD protection
Avoid touching PCB tracks and semiconductor terminals
Store in anti-static packaging
Power down equipment before removal
Verify discharge of stored capacitor energy
These precautions reduce the risk of accidental damage.
Before ordering, confirm:
Manufacturer: CCI Power Supplies LLC
Model: VT25-373-99/X9
Input: 20–60VDC, 3A
V1: 5VDC / 4A
V2: +15VDC / 0.5A
V3: −15VDC / 0.5A
V4: RET
System: SAU / GCU / AutoChief / DataChief or exact installed equipment
Connector Layout: Match physically
Kongsberg Reference: 3800003 where applicable
Existing Unit Photo: Recommended
Do not select a substitute just because it provides 5V and ±15V. Mechanical fit, pinout, current capacity, input range and system grounding may all differ.
For worldwide sourcing, the same model and related Kongsberg/Norcontrol power supplies can be requested through www.smmarineservice.com.
SM MARINE SERVICE™ supplies and sources CCI VT25-373-99/X9 DC/DC power supplies and legacy Kongsberg / Norcontrol marine automation spare parts.
Relevant enquiry references include:
CCI VT25-373-99/X9
VT2537399X9
Kongsberg 3800003
Norcontrol CCI Power Supply
SAU-8810 Power Supply
GCU-8810 Power Supply
Kongsberg AutoChief PSU
Norcontrol DataChief Power Supply
Available condition may include:
New • Used • Refurbished • Reconditioned • Tested Working
It is a multi-output DC/DC power supply converter used in marine and automation electronics.
The photographed label specifies:
20–60VDC, 3A.
The unit provides:
5VDC / 4A
+15VDC / 0.5A
−15VDC / 0.5A
RET
These ratings are independently confirmed by multiple current marine-equipment listings.
Yes. Multiple marine-spares references identify it as Kongsberg/Norcontrol automation equipment.
Yes. Multiple current sources explicitly associate VT25-373-99/X9 with the Norcontrol SAU-8810 Signal Acquisition Unit.
An aftermarket marine listing identifies the VT25-373-99/X9 as Kongsberg 3800003. Because an official Kongsberg datasheet was not located in this research, verify this reference against the vessel's documentation before ordering solely by that number.
Marine aftermarket references list the VT25 as a PSU for AutoChief, DataChief and other Kongsberg/Norcontrol equipment. Exact compatibility depends on the individual system and must be verified.
It accepts an input range of 20–60VDC, so a 24VDC system falls within that input range. The actual system supply should still be verified before installation.
Depending on stock, SM MARINE SERVICE™ can support new, used, refurbished and reconditioned marine power-supply requirements.
CCI Power Supplies LLC VT25-373-99/X9 marine DC/DC converter and multi-output power supply used in Kongsberg / Norcontrol legacy automation equipment. Input 20–60VDC, 3A; outputs 5VDC/4A, +15VDC/0.5A, −15VDC/0.5A and RET. Frequently associated with Norcontrol SAU-8810 Signal Acquisition Unit and marketed for related Kongsberg automation applications including GCU, AutoChief and DataChief systems, subject to exact compatibility verification. New, Used, Refurbished and Reconditioned VT25-373-99/X9 units available from SM MARINE SERVICE™ with worldwide shipping and technical support.
Marine Automation & Navigation Equipment Supplier
Available Condition:
• New Equipment • Used Equipment • Refurbished Equipment • Reconditioned Equipment
Stock Location:
• Bangladesh • China
Services:
• Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
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
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