Minerva Marine NT100ALB Fire Alarm Power Supply Unit
Tyco / Minerva Marine
Refurbished
The NT100ALB is a dedicated Fire Alarm System Power Supply Unit found in legacy Minerva Marine fire detection and alarm installations. Documented marine equipment records identify the NT100ALB power supply in Minerva Marine T1016 and T1016R Fire Alarm Control Panels, making it an important replacement spare for vessels continuing to operate these systems.
The SM MARINE SERVICE™ stock unit carries the following identification:
Product: NT100ALB
Equipment: Fire Alarm System Power Supply Unit
Approval Marking: PR EN54-4 – FINAL DRAFT
Version: 125S00656
Serial Number: 1547 6092
Input Voltage: 230V AC
Frequency: 50Hz
Current: 2A Class 1
Mains Connection: L / N
Visible Modification Reference: MOD. F100-118
The equipment also carries a clear high-voltage warning requiring mains isolation before opening the enclosure.
The NT100ALB is the power-supply section used to provide the required electrical power for a compatible fire alarm/control installation.
Marine equipment documentation and current replacement listings consistently describe NT100ALB as a Minerva Fire Alarm Control Panel Power Supply. One documented example specifies 230V AC input, 50Hz, 2A Class 1 and nominal 24VDC.
This means the unit should be categorized as:
Marine Fire Alarm Power Supply Unit / Fire Alarm PSU
rather than as a fire detector, smoke detector or alarm control processor.
A documented NT100ALB replacement unit provides the following specification:
| Parameter | NT100ALB |
|---|---|
| Product | Fire Alarm System Power Supply |
| Model | NT100ALB |
| AC Input | 230V AC |
| Frequency | 50Hz |
| Input Current | 2A |
| Protection Class | Class 1 |
| Nominal DC Supply | 24VDC |
| Approval Reference | PR EN54-4 |
| Application | Fire Alarm Control System |
These specifications are supported by documented NT100ALB examples.
Individual units may carry different fuse arrangements, modifications or revision markings. Therefore, replacement selection should use the complete original label rather than only the NT100ALB model name.
The SM MARINE SERVICE™ unit is clearly marked:
230 Volt AC Mains Input
with:
N – Neutral
L – Line
Because this section operates directly from mains voltage, work on the module must be performed by qualified personnel using the vessel's electrical isolation and lock-out procedures.
The warning label specifically instructs the user to disconnect the mains supply before opening the cover.
A documented NT100ALB unit specifies Nominal 24VDC, showing that the module converts the incoming AC mains supply for use by the associated fire-alarm installation.
This is particularly relevant when engineers search using phrases such as:
NT100ALB 24VDC Power Supply
Minerva 230VAC to 24VDC Fire Alarm PSU
T1016 Fire Alarm Power Supply
T1016R Power Supply
However, the exact output terminals and battery/charging configuration should always be confirmed from the correct system wiring documentation.
A documented Minerva Marine T1016 Fire Alarm Control Panel contains a power-supply identification showing:
Product: NT100ALB
Version: 125500656
Voltage: 230V AC
Frequency: 50Hz
Current: 2A Class 1.
This establishes an important documented relationship between T1016 and NT100ALB.
Therefore, buyers searching for:
Minerva T1016 PSU
T1016 Fire Alarm Power Supply
T1016 NT100ALB
may be looking for this module.
The NT100ALB is also documented in a Minerva Marine T1016R Fire Alarm Control Panel. The T1016R record lists NT100ALB together with the same PR EN54-4 approval family and 230V AC / 50Hz / 2A electrical characteristics.
This makes T1016R NT100ALB Power Supply another important search and replacement reference.
It does not mean that every NT100ALB revision can automatically be exchanged between every T1016/T1016R installation. The complete module identification and system documentation should still be checked.
The photographed SM MARINE SERVICE™ unit appears to carry the version marking:
125S00656
while other documented NT100ALB examples are transcribed as:
125500656.
Because old labels and online transcriptions can produce differences between the character S and the digit 5, these references are useful search variants but should not be silently treated as identical part numbers without checking the physical label or manufacturer documentation.
For replacement sourcing, send SM MARINE SERVICE™ a clear photograph of the complete original label.
One of the photographed units carries a blue label marked:
MOD. F100-118
This should be retained as an important identification/reference term when requesting an exact replacement.
A modification number may indicate a particular hardware change or configuration. Since no reliable primary technical document establishing the function of F100-118 was located, it should not be interpreted as an electrical specification.
If the original vessel unit is marked F100-118, that information should be included in the RFQ.
NT100ALB is relevant to legacy marine fire-detection installations where this specific PSU was originally installed.
Documented applications include the Minerva Marine T1016 and T1016R Fire Alarm Control Panels.
The unit may therefore be encountered on:
Cargo Ships
Tankers
Bulk Carriers
Container Ships
Offshore and Special-Purpose Vessels
Other vessels fitted with compatible Minerva/Thorn fire-alarm equipment
Actual vessel compatibility must be confirmed against the installed system.
For marine fire alarm equipment and legacy electronic spares, visit SM MARINE SERVICE™.
First verify that the correct 230V AC mains supply is present at the input and that the upstream breaker/protection device is operating correctly.
Because mains voltage is hazardous, measurements must be carried out only by qualified personnel.
If the mains input is correct but the required DC supply is absent, the PSU itself, internal protection, fuse or associated circuitry may require investigation.
A documented NT100ALB example identifies the nominal system supply as 24VDC.
Do not repeatedly replace a fuse without determining why it failed.
A short circuit, downstream load problem, internal PSU fault or wiring problem can cause repeated fuse operation.
Also note that available NT100ALB examples do not all show the same fuse labeling. One documented unit specifies 6.3A, while the photographed equipment includes a visible warning label showing 3.15A / 250V AC Type F on one assembly.
Therefore, always follow the fuse rating printed on the exact installed unit.
Inspect:
Mains terminals → wiring → connectors → earth connection → output connections → PSU condition
Ageing capacitors or other electronic components can also affect legacy power supplies, but component-level repair should be performed only after proper electrical diagnosis.
Matching NT100ALB alone may not be enough.
Compare:
Version number
Modification number
Connector arrangement
Output configuration
Fuse specification
Associated T1016/T1016R system version
before commissioning the replacement.
The photographed NT100ALB carries explicit warnings for high mains voltage.
Another visible warning states:
MAINS VOLTAGE PRESENT
and specifies disconnecting the mains supply before opening the cover.
This is a life-safety fire-alarm system component. Testing, repair, replacement and commissioning should therefore be handled by competent personnel and according to the vessel's approved fire-detection documentation and applicable class/flag requirements.
SM MARINE SERVICE™ supports worldwide sourcing and supply of NT100ALB Fire Alarm System Power Supply Units and other legacy marine fire-alarm components.
Depending on stock availability, units may be supplied as:
New / New Old Stock
Used Tested Working
Refurbished
Reconditioned
For an accurate replacement quotation, customers should provide:
Product: NT100ALB
Version / Part Number
Modification number, such as F100-118 if present
System model – T1016 / T1016R or other
Input/output information
Clear photographs of all labels and connectors
Required quantity
International trade records also document NT100ALB specifically as a power supply unit for fire alarm system, confirming continuing demand for the model as a marine spare.
Many vessels continue operating legacy fire-alarm installations that remain serviceable and supported through replacement spare parts.
When only the power supply fails, replacing the correct PSU may be more practical than replacing an entire fire-alarm installation—provided the repair/replacement is technically appropriate and compliant with the vessel's requirements.
NT100ALB remains present in today's marine replacement market, including listings specifically describing it as a Minerva Marine Fire Alarm System NT100ALB Power Supply.
NT100ALB is a Fire Alarm System Power Supply Unit documented in Minerva Marine fire-alarm installations.
Documented units and the photographed SM MARINE SERVICE™ unit specify 230V AC, 50Hz.
The photographed and documented NT100ALB examples specify 2A Class 1.
A documented NT100ALB replacement unit specifies Nominal 24VDC.
Yes. A documented T1016 Fire Alarm Control Panel specifically lists Product NT100ALB.
Yes. NT100ALB is also documented in a Minerva Marine T1016R Fire Alarm Control Panel.
The NT100ALB label carries PR EN54-4 / FINAL DRAFT approval-related marking. EN 54-4 relates to power-supply equipment used in fire detection and fire alarm systems.
F100-118 is a modification/reference marking visible on the photographed unit. Its exact technical significance should be verified from the applicable manufacturer documentation; it should not be treated as a model or electrical rating without that documentation.
Not automatically. Check version, modification reference, connectors, fuse arrangement and the associated fire-alarm panel before replacement.
SM MARINE SERVICE™ supplies and sources NT100ALB and other legacy marine fire-alarm spare parts worldwide, subject to current availability.
NT100ALB Fire Alarm System Power Supply Unit is a legacy marine fire-alarm PSU documented in Minerva Marine T1016 and T1016R Fire Alarm Control Panels. The unit operates from 230V AC, 50Hz, with documented 2A Class 1 input characteristics and a nominal 24VDC supply reference. Search references include NT100ALB, NT100 ALB, PR EN54-4, 125S00656 / 125500656 and MOD. F100-118. SM MARINE SERVICE™ supplies new, used, refurbished and reconditioned marine fire-alarm spare parts worldwide.
SM MARINE SERVICE™
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
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
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