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Mastervolt

81400600

DC Master 48/12-6 Converter

The Mastervolt DC Master 48/12-6 non-isolated step-down converter converts 48V input to a stable 12V output (13.6 V) at a continuous current of 6A. Designed for marine environments with its IP53-rated aluminum housing, it provides a compact and silent solution for powering low-power electronic equipment. The product is supplied complete with a snap-on wall mounting bracket, fasteners, and Faston terminals for immediate connection.

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£145.46 GBP

£145.46 GBP ~~£190.06 GBP~~

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Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

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Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

IP rating	IP53
Marine-ready	Oui
Operating temperature range	-25 °C to 80 °C, derating > 30 °C
Cooling method	Natural convection
Dimensions (W x H x D)	87 x 89 x 50 mm
Mounting type	Snap-on mounting bracket
Weight	0.415
Wired input	Faston connectors
Wired output	Faston connectors
Nominal input voltage	48.0
Input voltage range	40-62 V
Nominal output voltage	13.6
Continuous power at 25°C	82.0
Continuous output power (40°C)	82.0
Peak power	109.0
Max efficiency	90.0
Parallel connection	Oui
Short-circuit protection	Oui
Overload protection	Oui
Recommended fuse rating	5.0
Topologie du convertisseur	Non-insulated
Rendement énergétique	90.0
Tension d'isolation galvanique	0.0
Marine grade	Oui
Courant de sortie	6.0
Max output power	109.0
Tension de sortie	13.6
Protection contre la surchauffe	Oui
Protection contre les surtensions	Oui
Type de conversion d'énergie	DC-DC buck converter

Detailed description

The Mastervolt DC Master 48/12-6 converter is designed to provide a stable 12V output from a 48V battery bank. Ideal for marine and industrial applications, this non-isolated step-down voltage converter ensures reliable power for sensitive 12V electronic equipment, with a continuous output of 6A and peaks up to 8A for two minutes. Thanks to its high-quality switching technology, it delivers efficient energy conversion with perfectly controlled heat dissipation.

Electrical performance and integration

Accepting an input voltage range of 40 to 62 V DC, this model delivers a stabilized nominal voltage of 13.6 V, protecting your navigation instruments, LED lighting, or communication systems from voltage fluctuations on board. With a no-load consumption of less than 100 mA, the DC Master 48/12-6 preserves the autonomy of your 48V battery bank. Unlike the isolated models in the Mastervolt range, which galvanically separate circuits, this non-isolated version offers an ultra-compact design (89 x 87 x 50 mm) and a reduced weight of 415 grams, making it ideal for confined spaces where a common ground does not cause ground loop issues.

Robust design for marine environments

The anodized aluminum and fiberglass-reinforced polycarbonate housing provides excellent mechanical strength and passive heat dissipation without a fan, ensuring completely silent operation. Certified IP53, it resists water splashes and dust. Installation is simplified by a dedicated mounting bracket onto which the unit clips, and by Faston-type electrical connections for quick and secure wiring. For higher power requirements on a 48V network, consider the DC Master 48/12-9A or 48/12-20A models from the same range.

Expert opinion

Pol CONIN

Digital Manager

« Thermal reliability and compactness for 48V to 12V step-down conversion »

The Mastervolt DC Master 48/12-6 converter perfectly addresses the integration issues of standard 12V equipment (VHF, chartplotters, lighting) on vessels or industrial vehicles equipped with 48V service battery banks. Although this is a non-isolated model, its conversion topology ensures excellent stability of the 13.6 V output voltage, even during significant input voltage variations (up to 62 V). Its extremely compact format and clip-mounting system make installation particularly easy in confined spaces or dense electrical panels. The absence of a fan (natural convection cooling via the aluminum housing) is a major asset for long-term reliability, eliminating the risk of mechanical failures due to marine fouling. This is a pragmatic and highly reliable choice for continuous loads up to 6A (82W).

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DC Master 48/12-6 Converter

£145.46 GBP

£145.46 GBP ~~£190.06 GBP~~

Frequently Asked Questions

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What is the Mastervolt DC Master 48/12-6 converter used for?

It converts the voltage of a 48V battery bank into a stable 12V output (13.6V nominal). It is ideal for powering your 12V equipment (navigation electronics, lighting, communication) from a 48V system.

What power output does this converter deliver?

It delivers a continuous current of 6A (82W) and can provide a peak current of 8A (109W) for a maximum duration of two minutes.

Is this model galvanically isolated?

No, the 48/12-6 model (reference 81400600) is a non-isolated converter. This means it has a common ground, which is perfectly suitable for installations where the ground loop is not an issue and allows for a more compact design.

Does the device emit noise during operation?

No, its operation is completely silent. Cooling is achieved naturally (passive thermal dissipation) thanks to its aluminum housing, without requiring a fan.

What is the accepted input voltage range?

To deliver its full output power, the converter accepts an input voltage between 40 and 62 V DC. It tolerates voltages from 0 to 65 V DC without sustaining physical damage.

How to mount the converter on my boat?

Installation is straightforward thanks to the included mounting bracket. Simply secure the bracket (clip) with the supplied screws onto a flat surface, then snap the converter into place.

Which items are included in the box?

The DC Master converter comes with all necessary accessories:

A mounting bracket (clip)Mounting screwsFaston terminals for electrical connection

Do I need to install a fuse with this converter?

Yes, for safety reasons, it is imperative to install a fuse on the positive wiring, and to place it as close as possible to the 48V battery.

What is the connection order for the cables during installation?

During installation, you must first connect the two input cables (coming from the 48V battery). Only then can you connect the output cables to your 12V equipment.

What type of connectors should I use for the wiring?

Input and output connections on the device are made via Faston-type terminals, which are in fact supplied with the converter.

Where should I install the converter?

It is strongly recommended to choose a cool, dry, and well-ventilated location to ensure optimal heat dissipation and extend the device’s lifespan.

Can I use this converter to power sensitive electronic devices?

Absolutely. The output voltage is stabilized at 13.6 V, which effectively protects your navigation instruments, communication systems, or LED lighting from voltage fluctuations on board.

Can this converter be used on a 24V battery system?

No, this specific model (48/12-6) is designed exclusively for a nominal input voltage of 48V. For a 24V system, you must choose a model from Mastervolt’s 24/12 range.

Is the converter suitable for use outside of marine applications?

Yes, although it is very popular in marine applications, its robustness and certifications (CE, E-mark) make it perfectly suitable for recreational vehicles (motorhomes) and industrial applications.

Should power be cut during installation?

Yes, it is essential to ensure the power source output is turned off and no loads are connected to the batteries during installation to prevent any electrical risk.

Can the output voltage vary depending on the load?

No, the converter is equipped with a stabilization function. It maintains a constant output voltage of 13.6 V, regardless of load variations, as long as you remain within its capacity limits (6 A continuous).