Marstek SmartBox Three Phase

Robust solution for automatic backup power supply in three-phase connections, ideal for larger installations and commercial applications.

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Automatic switching

Instantly switches to the backup port during a power outage, without interruption.

Robust design

Engineered for long-term use in demanding environments.

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Guaranteed continuity

Ensures essential systems remain operational during power outages or grid disturbances.

Seamless integration

Fully compatible with Marstek batteries and energy systems.

The Marstek Smartbox Three Phase provides reliable and automatic switching to backup power in the event of a grid failure. Specifically designed for three-phase connections, this solution ensures continuity for larger homes, commercial buildings and installations. In combination with Marstek batteries, the Smartbox delivers maximum reliability and a stable backup power supply.

Direct backup power

The Smartbox Three Phase switches almost instantly to the backup port during a power outage. This ensures machines, servers and other critical systems remain operational without interruption, which is essential for commercial and larger residential installations.

Designed for three-phase systems

This Smartbox is specifically developed for three-phase connections and higher power demands. It is the ideal solution for commercial buildings, workshops and homes where a single-phase setup is not sufficient.

Reliable performance

Thanks to its robust and scalable design, the Smartbox provides long-term reliability. It is built for intensive use and delivers stable performance even in demanding environments.

Works with single-phase variant

For smaller connections or households, the Smartbox Single Phase is available. Combined with the three-phase version, Marstek offers a complete solution for all types of connections, from residential to professional use.

Key specifications

Function
Automatic switching during power outages
Continuity for three-phase connections
Application
Larger homes and commercial buildings
Ideal for critical systems and installations
Design
Robust and scalable
Suitable for long-term and intensive use
Compatibility
Works seamlessly with Marstek ESS
Supports backup power across all phases
Safety
Reliable switching without interruption
Designed for continuous operation
Warranty
2-year manufacturer warranty
Support via MW Energie

The Smartbox Three Phase is the ideal solution for ensuring continuity in three-phase connections. With automatic switching and robust performance, it reliably protects larger installations and critical systems against power outages.

In addition to its compact design and easy installation, the Smartbox is a valuable addition to any residential energy system. For larger applications or commercial installations, the Smartbox Three Phase is available, offering the same reliable functionality for three-phase connections.

Who is it for

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Distributors

Our chain starts with distribution. We work with partners who sell our products and add value. With clear agreements, reliable stock availability, and technical support, we make collaboration straightforward.

Installers

We support installers with easy-to-understand systems, reliable delivery, and direct access to support. No unnecessary complexity, but a partner who thinks along and provides solutions that make the job easier.

E-commerce businesses

For e-commerce companies with technical expertise and a network of installers, we provide both plug-and-play solutions and other energy solutions. We offer clear documentation and service that continues even after delivery.

Private individual

Our focus is not on direct sales, but on strengthening the market. We help stimulate demand, clarify the market, and guide users toward quality choices. This is how we operate together in a B2B2C model.

Partner in

energy storage

As an importer and specialist in energy storage, we provide not only reliable products, but also the service and expertise to support you. With MW Energie, you choose quality, continuity, and a partner who thinks along with you.

Partner network
Contact

More about the Marstek Smartbox Three Phase

Connectivity

Integration

Fully compatible with Marstek ESS and batteries

Switching

Automatic switching to the backup port

Integration

Supports backup power across all phases

Applications

Larger installations

For homes with three-phase connections and commercial applications

Critical equipment

Keeps essential systems continuously operational

Commercial use

Suitable for production environments, workshops and offices

Installation & integration

Placement

Designed for integration in professional installations

Design

Robust and scalable for long-term use

Compatibility

Directly compatible with Marstek batteries and accessories

The 4 guarantees of MW Energie

40+ years of experience in energy solutions

40+
Always a warranty on our products

We only supply products from brands that have proven their quality. Always with a clear manufacturer’s warranty, so you can invest with confidence.

Expert technical support

Whether you are a dealer or an end user, our support team is ready to assist with advice, installation questions, and solutions. Fast, knowledgeable, and personal.

Own stock, fast delivery

We keep our products in stock ourselves. This allows us to deliver quickly, so you are never dependent on long lead times or uncertain availability.

Dedicated aftercare and service

Our work doesn’t stop after delivery. We remain involved for maintenance, updates, and guidance, ensuring that you and your customers can rely on ongoing support.

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