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Marstek Smart Back-up Box Three-phase (DB63T) for emergency power supply at home

Price excluding VAT

€429,00 EUR
€429,00 EUR
Shipping calculated at checkout.

The Marstek Smart Backup Box Three-Phase (DB63T) is the ultimate emergency power solution for keeping your entire energy system in the Netherlands and the Benelux safe and reliable. In the event of a grid failure, the box automatically switches to the backup output, ensuring essential appliances such as lighting, routers, refrigerators, and medical equipment remain operational immediately. Thanks to its robust three-phase connection (380V/400V), it's the ideal whole-home backup solution for larger homes and businesses. The Smart Backup Box integrates seamlessly with Marstek home batteries and prevents disruptions to your energy system.

Can the DB63T protect my entire home in the Netherlands against power outages?

The DB63T offers a powerful emergency power solution for three-phase installations:

  • Whole-Home Backup : Designed for backing up critical loads on three-phase grids.
  • Automatic switch-over within 1 second in case of power failure.
  • Scalable : Multi-Unit Parallel Expansion capability (up to 9 Venus units) for maximum storage and power.
  • Easy integration with Marstek Venus home batteries and inverters.
  • High safety and durability (IP20 protection degree).

How quickly does the Smart Back-up Box switch over in the event of a power failure?

The DB63T ensures you switch to battery power almost unnoticed, with a maximum throughput of 40A per phase:

  • During normal (on-grid) operation, the full grid load (max. 40A) runs via the pass-through.
  • In the event of a mains failure, the grid side is disconnected within approximately 1 second and the backup output supplies the selected single-phase groups via the inverter and battery.
  • After mains power is restored, the box switches back to on-grid operation in a controlled manner.

What are the technical specifications of the Marstek DB63T?

Technical specifications:

  • Model: DB63T
  • AC connection (Mains): Three phase
  • Nominal Voltage (Network): AC 380V/400V, 50/60Hz
  • Max. Throughput Current (Mains): 40A
  • AC Output (Backup): Single-phase load (per phase)
  • Rated Voltage (Backup): AC 220V/230V, 50/60Hz
  • Max. Output Current (Backup): 40A
  • Switching time: **1 s**
  • Compatible Inverter: Marstek Venus Series
  • Working modes: Off-grid and On-grid
  • Protection degree: IP20
  • Operating temperature: −5°C to +70°C
  • Dimensions (L×W×H): 500 × 380 × 118 mm
  • Weight: 12 kg

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