MG Master LV 24-48V/400A (M12) – vue fabricant 1 – MGMLV482400

MG Master LV 24-48V/400A (M12) – vue fabricant 2 – MGMLV482400

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MG ENERGY

MGMLV482400

MG Master LV 24-48V/400A (M12) – MGMLV482400

MG Energy battery controller for 48 V systems, 400 A main contactor, designed to supervise and protect the compatible battery bank.

Price excl. import taxesBenefit from the professional rate

$1,046.00 USD

$1,046.00 USD ~~$1,182.00 USD~~

Shipping calculated at checkout.

Prices exclude import taxes. DAP delivery: import taxes are paid on delivery.

Available in stock

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

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Detailed description

MG Energy battery controller for 48 V systems, 400 A main contactor, tasked with monitoring and protecting the compatible battery bank.

Key features

Centralized monitoring of essential battery bank parameters.
System protection via opening of the safety contactor in case of threshold exceedance.
Active power consumption: 8.7 W.
Manufacturer documentation and 2026 dealer specifications linked to the exact SKU.

Intended use

MG Energy battery system integrators for marine, mobile, and stationary applications.

Compatibility and prerequisites

System voltage range: 48 V.
Contactor capacity: 400 A.
Connectable batteries: 48 battery modules of RS type.

Installation and safety

Power wiring, CAN, emergency stop, and precharge to be completed per MG Energy manual.
Verify precharge capacity and contactor current relative to loads and converters.
Commissioning and configuration reserved for a qualified integrator.

Included

One BMS controller corresponding to the specified SKU.
Official digital documentation.

To be provided separately

Batteries, CAN cables, and power cables.
Fuses, distribution, external contactors, and installation-specific accessories.
Electrical study, configuration, and commissioning.

Shipping and handling

Declared shipping weight: 5.5 kg.
Configuration product sold on quote; compatibility and lead time confirmed before order.

Environment

Humidity (non-condensing): ≤ 95 %
Operating temperature range: -20 to +50 °C

Inputs and outputs

Charge enable (relay output): 0.8 A at 60 Vdc, dry contact
Charge enable (switched voltage): Short-circuit protection
Discharge enable (relay output): 0.8 A at 60 Vdc, dry contact
Discharge enable (switched voltage): Short-circuit protection
Auxiliary output: Short-circuit protection
Emergency stop connection: Wired emergency stop opening the main contactor.
External status signal: Short-circuit protection
Programmable contact (relay output): 0.8 A at 60 Vdc, dry contact

Mechanical specifications

Data connection: CAN Bus M12
Housing material: ABS
Height: 117 mm
Ingress protection rating: IP22
Length: 426 mm
Weight: 4.9 kg
Width: 225 mm

Standards and certifications

Certifications: IEC-EN62619 (ES-TRIN)
EMC emissions: EN-IEC 61000-6-3:2007/A1:2011/C11:2012
EMC immunity: EN-IEC 61000-6-1:2007
Low voltage directive: EN 60335-1:2012/AC:2014
RoHS: EN 50581:2012

Technical specifications

Main contactor current: 400 A
Maximum number of connected batteries: 48 RS-type battery modules
Maximum precharge capacity: 250 mF at 48 V
Operating power consumption: 8.7 W
Standby power consumption: 73 mW at 26.2 V, 138 mW at 52.4 V
Power supply voltage range: 18 - 58 Vdc
System voltage: 48 V

Logistics

HS customs code: 8537109199
Country of origin: Netherlands
Shipping weight: 5.5 kg
Classified as dangerous goods: No

Documentation

Official MG Energy datasheet - MGMLV482400

Integration tip: verify voltage, currents, protections, cooling, and interfaces of the complete system before installation.

Expert opinion

Pol CONIN

Digital Manager

« Expert review — MG Master LV 24-48V/400A (M12) – MGMLV482400 »

The MG Master LV 24-48V/400A (M12) is the central battery management system (BMS) for MG Energy’s lithium-ion battery-based energy systems. Its strategic value lies in its ability to proactively monitor, protect, and optimize complex battery banks for marine, mobile, and stationary applications.

Its primary role is to function as an integrated safety unit. It includes a 400A main safety contactor and a precharge circuit, significantly simplifying system architecture by eliminating the need for external components for these critical functions. This all-in-one approach reduces potential failure points and wiring requirements, making installation easier for qualified integrators.

This controller stands out for its communication versatility. With M12 and RJ45 CAN-Bus connectors and support for NMEA2000, Victron VE.Can, and SMA protocols, it integrates seamlessly into existing or future energy ecosystems. Bluetooth Smart connectivity also provides a convenient interface for initial configuration and monitoring via the MG Connect app, though advanced settings require the specific diagnostic tool and professional expertise.

In terms of installation scenarios, the Master LV is designed to manage up to 48 MG RS-type battery modules, offering high scalability for systems of varying sizes. It also supports redundant systems by configuring multiple Master LV units in "combined mode," a key feature for critical applications where reliability is paramount. However, its IP22 protection rating requires installation in a protected environment, shielded from direct water spray and excessive moisture, which is an important consideration when planning its location aboard a vessel or in a vehicle.

While physical installation is simplified by its integrated design and the inclusion of the high-voltage interlock loop (HVIL) on M12 models, commissioning and fine-tuning the system absolutely require the intervention of a qualified integrator. This ensures that safety limits are correctly configured and that the system operates optimally to maximize battery lifespan and overall installation safety.

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MG Master LV 24-48V/400A (M12) – MGMLV482400

$1,046.00 USD

$1,046.00 USD ~~$1,182.00 USD~~

Frequently Asked Questions

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What is the primary function of the MG Master LV 24-48V/400A (M12)?

The MG Master LV 24-48V/400A (M12) is a battery management controller (Master BMS) designed to monitor and protect compatible battery banks. It is responsible for tracking essential parameters of the bank and protecting the system by opening the safety contactor in case of exceeding limits.

Which system voltages are compatible with this controller?

This controller is specifically designed for use in battery systems operating at 24 V or 48 V.

What is the maximum continuous current rating handled by the main contactor?

The main contactor integrated in the MG Master LV 24-48V/400A (M12) can handle a maximum DC current of 400 A.

What data connectivity types are available on the MG Master LV?

The MG Master LV offers several data connectivity options:

M12 CAN Bus
RJ45 CAN Bus
MG NMEA2000 protocol
Bluetooth
Note: Only one CAN protocol can be selected and used at a time (e.g., combining SMA with NMEA2000 is not possible).

What are the environmental conditions (temperature, humidity) for using this product?

The MG Master LV is designed to operate within a temperature range of -20 °C to +50 °C. Ambient humidity without condensation must be less than or equal to 95 %.

Is the MG Master LV certified for specific applications?

Yes, the MG Master LV is CE certified and complies with several European directives, including:

Low Voltage Directive 2014/35/EU
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
RED Directive 2014/53/EU
It also holds IEC-EN 62619 certification.

Which type of batteries is compatible with this controller?

The MG Master LV is compatible with RS-type battery modules. It can connect and manage up to 48 modules of this type.

Can the controller be installed horizontally or vertically?

Yes, the MG Master LV can be mounted either vertically (which is recommended) or horizontally, depending on the constraints and requirements of your installation.

Which items are included when purchasing the MG Master LV?

Upon purchase, you will receive a BMS controller matching the indicated SKU (MGMLV482400) as well as the official digital documentation.

Which components must be purchased separately for a complete installation?

For a complete installation, you will need to provide separately:

BatteriesCAN cables and power cablesFuses and distributionExternal contactors and accessories specific to the installationElectrical design, configuration, and commissioning by a qualified integrator

What is the ingress protection (IP) rating of the MG Master LV?

The MG Master LV has an IP22 ingress protection rating. This means it is protected against solid objects larger than 12.5 mm in diameter and against water droplets falling at angles up to 15° from vertical.

What are the specifications of the fuses required for the controller?

The controller requires the following fuses:

A 10 A / 250 V pre-charge fuse. A 6.3 A / 250 V main fuse for the control electronics. MEGA fuses of appropriate size for battery connections and loads/chargers.

What is the maximum preload capacity supported by this model?

For the MG Master LV 24-48V, the maximum supported pre-charge capacitance is 300 mF.

What relay outputs are available on the controller?

The controller has multiple relay outputs:

Charge authorization output (dry contact)Discharge authorization output (dry contact)Programmable output (dry contact)These outputs can handle a maximum current of 0.8 A at 60 Vdc.

Is it possible to update the firmware on the MG Master LV?

Yes, the MG Master LV firmware can be updated to improve stability and add new features. Some updates, particularly bootloader updates, may require manual installation using the MG Diagnostic Tool.

What is the function of the M12 connector on the MG Master LV?

The M12 connector on the MG Master LV is dedicated to data connection via the CAN Bus. It enables communication between the controller and other battery system components.

Can the MG Master LV be configured by the end user?

Commissioning and configuration of the MG Master LV are complex operations that must be performed by a qualified integrator. This ensures the safety and proper operation of the entire battery system.

Which voltage systems is the MG Master LV 24-48V/400A (M12) compatible with?

The MG Master LV 24-48V/400A (M12) battery controller is designed to operate with battery systems in a voltage range from 24V to 48V DC. It can handle continuous current up to 400A via its main contactor and is compatible with RS-type battery modules.

Which components required for installing the MG Master LV 24-48V/400A (M12) are not included?

For a complete installation of the MG Master LV 24-48V/400A (M12), you will need to provide separately:

Compatible batteries.CAN cables and power cables.Fuses, electrical distribution, and external contactors.Any accessories specific to your installation.It is also recommended to have an electrical study, configuration, and commissioning performed by a qualified integrator.

What are the main features and functions of the MG Master LV 24-48V/400A (M12)?

The MG Master LV 24-48V/400A (M12) is a battery controller designed to monitor and protect your battery bank. Its main features and functions include:

Centralized monitoring of essential battery bank parameters.Protection of the system by opening the safety contactor if limits are exceeded.A contactor capacity of 400 A.A system voltage range from 24 V to 48 V.An active power consumption of 8.7 W.CAN Bus M12 and NMEA 2000 connectivity.IP22 protection rating.An operating temperature range from -20 to +50 °C.