250A protective enclosure for Pylontech battery
250A protective enclosure for Pylontech battery
250A protective enclosure for Pylontech battery
250A protective enclosure for Pylontech battery

250A Bipolar DC Protection Box for Pylontech Lithium Batteries

€365.76
Tax included
Coffret-protection-250A-Pylontech
0768563823800

The 250A protection box is a robust electrical safety interface designed to protect high-capacity storage parks. This product is a DC disconnect box used to isolate and protect your batteries from accidental overloads and short circuits.

This accessory is specifically compatible with Pylontech batteries (US2000C, US3000C, US5000 series). This device secures the connection between the battery bank and the inverter by integrating seamlessly with high-power systems operating at 48V, such as Victron MultiPlus-II inverter-chargers or WKS solutions.

Equipped with a 250A isolator, this box also facilitates maintenance operations by allowing the circuit to be physically disconnected without disconnecting the cables. Its robust housing provides durable mechanical protection for large-section cables, which are essential for supporting high discharge currents.

Technical advantages of the box:

  • Breaking capacity: 250A rating suitable for rapid discharges from lithium battery banks.
  • Increased safety: Effective protection of Pylontech cells and inverter electronics.
  • Simplified maintenance: Integrated disconnect switch for quick and safe power-off.
  • Compliance: Meets safety requirements for residential energy storage installations.

250A Bipolar Protection Box for Pylontech Batteries – Ready to Install


The 250A protection box for Pylontech batteries is a turnkey solution for securing your installations. This box provides full bipolar protection, simultaneously isolating the positive (+) and negative (-) poles for maximum safety against overloads and short circuits.





Box contents

This box is delivered complete, pre-wired and ready to install:

  • IP65 box: Total protection against dust and water splashes.
  • 2P 250A DC1000V bipolar circuit breaker: Simultaneous protection of both polarities.
  • 2 x 50 mm² cables with terminals: Direct and robust connection to the inverter.
  • 2 pairs of Pylontech battery cables: Specific connectors for a secure connection.





How the box works

The box centralises and secures the energy flow of your battery bank:

  • Pylontech batteries are connected to the box via dedicated connectors.
  • Bipolar protection: The circuit breaker disconnects both lines, ensuring that there is no residual current in the event of a power cut.
  • Power is distributed stably to the inverter via 50 mm² cables.

Principle: By cutting both poles simultaneously, this system provides true galvanic isolation, protecting the user and the inverter's electronics.





Typical applications

  • Installations with Pylontech US2000 / US3000 / US5000 batteries.
  • Modular storage systems requiring reliable isolation.
  • Bipolar protection for hybrid installations (Victron, WKS, etc.).





Advantages of the box

  • Bipolar safety: Simultaneous disconnection of (+) and (-) for increased protection.
  • Turnkey solution: Box, Pylontech connectors and circuit breaker included.
  • Quick installation: Plug & Play connectors specific to Pylontech batteries.
  • Safe maintenance: Resettable circuit breaker allowing complete isolation of the battery bank.





Commissioning

  1. Ensure that the bipolar circuit breaker is in the OFF position.
  2. Connect the battery cables to the Pylontech packs.
  3. Connect the 50 mm² cables to the inverter.
  4. Observe the polarity (+ red, - black) on both poles.
  5. Switch the circuit breaker to ON to activate the protection.

For more details, please refer to our Pylontech installation guide.





Safety and maintenance

  • Bipolar cut-off: Magnetic and thermal disconnection on both DC lines.
  • 50 mm² cables: Section suitable for supporting 250A without overheating.
  • Maintenance: Visual inspection and manual testing of the circuit breaker on a regular basis.





FAQ - Pylontech 250A protection box

1. Why is this box bipolar? +
With direct current, it is essential to cut both poles. This ensures that in the event of a fault, the battery is completely isolated from the inverter, preventing any electric arcs or dangerous current returns to your installation.
2. Is this box compatible with the Pylontech US5000 battery? +
Yes, it is perfectly sized for the US2000C, US3000C and US5000 models. Its 250A capacity allows you to safely manage high discharge powers for your lithium batteries.
3. What is the purpose of the 50 mm² cables supplied? +
The 50 mm² cross-section is specifically designed to support a continuous current of 250A without overheating. This optimises your self-consumption efficiency by minimising voltage drops between the battery bank and the inverter.
4. Does this box provide magnetic and thermal protection? +
Absolutely. The integrated circuit breaker provides magnetic (against short circuits) and thermal (against overloads) protection, thus protecting the chemical integrity of your Pylontech lithium cells.
Coffret-protection-250A-Pylontech

Data sheet

Type of electrical equipment
Protection box

Specific References

UPC
768563823800
EAN13
0768563823800
MPN
Coffret-protection-250A-Pylontech

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