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Fronius Reserva InlineFuse 50A MC4-Evo stor DC Fuse 42,0411,0546,IK

Fronius Reserva InlineFuse 50A MC4-Evo stor DC Fuse 42,0411,0546,IK

DC inline fuse for multi-tower installations of the Fronius Reserva

The Fronius Reserva InlineFuse 50A is a DC inline fuse for Stäubli MC4-Evo stor connectors, used in multi-tower installations of the Fronius Reserva whenever the maximum permissible DC cable length between the inverter and the last battery tower is exceeded. The fuses are integrated directly into the DC cables between the inverter and battery as well as between the battery towers, reliably protecting the system against overcurrent and potential damage.

Note for older Fronius Reserva battery storage systems: All Fronius Reserva battery storage systems whose BMS was produced and packaged before 11 July 2025 require their own connector and are compatible with the Amphenol H4 Plus connector – available directly from Fronius.

Technical Data
Product type:DC inline fuse / battery storage accessory
Part number:42.0411.0546.IK
Rated current:50 A
Cable cross-section:10 mm²
Connector:Stäubli MC4-Evo stor
Dimensions (W/H/D):535 × 28 × 28 mm
Compatibility:Fronius Reserva multi-tower installations

For further technical details and notes, please refer to the datasheet.

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Manufacturer "Fronius International GmbH"
The Austrian company Fronius and its Solar Division have been developing energy solutions in the field of photovoltaics since 1992. Fronius offers a broad product portfolio of inverters, wallboxes and storage solutions with extensive monitoring and communication functions. These enable intelligent supply concepts, for example by integrating heat generation or electromobility. With the goal of “24 hours of sunshine”, Fronius is working every day to realize the vision of the future in which 100% of the world''s energy needs are covered by renewable energy sources. However, the high standards of the third-generation family-run company are not only reflected in its product portfolio: Technical support, sustainable research and production in Upper Austria as well as strong partnerships with certified solar installers, e.g. as part of the Fronius System Partner Program, are key components of the Fronius philosophy and make the Fronius brand one of the leading players in the photovoltaic sector.

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Manufacturer

Fronius International GmbH
Froniusstraße 1
4643 Pettenbach
Austria

E-Mail: contact@fronius.com
Web: www.fronius.com

Economic operator

Fronius Deutschland GmbH
Fronius Straße 1
36119 Neuhof-Dorfborn
Germany

Tel. / Fon: +49 (0) 66 55-9 16 94-0
E-Mail: pv-sales-germany@fronius.com
Web: www.fronius.com/de

Safety Instructions:

  1. Installation by qualified personnel: The installation of a PV storage system must only be carried out by qualified professionals.
  2. Ensure ventilation: Install the storage system in a well-ventilated area to ensure heat dissipation and prevent the risk of overheating.
  3. Observe fire safety regulations: Battery storage systems should be installed at a safe distance from flammable materials.
  4. Ensure accessibility: Install the storage system in an easily accessible location to allow for safe maintenance and emergency shutdown.
  5. Mechanical safety: Ensure that the battery storage system is securely fastened and protected against tipping.
  6. Danger from high voltages: Battery storage systems can generate dangerously high voltages. Avoid contact with exposed terminals or wires.
  7. Observe polarity: Ensure that the terminals are correctly polarized to avoid short circuits and damage.
  8. Suitable cables and fuses: Use only cables, connectors, and fuses recommended by the manufacturer.
  9. Grounding: Ensure that the battery and the entire PV system are properly grounded.
  10. Avoid short circuits: Keep tools, wires, or other conductive objects away from the battery terminals.
  11. Proper use: Use the battery only for its intended purpose and under the specified conditions.
  12. Proper disposal: Batteries contain environmentally hazardous substances and must be recycled or disposed of in accordance with applicable regulations for electronic waste.
  13. Danger from residual charge: Be aware that batteries can retain dangerous residual charges even after being switched off.
  14. No modifications: Unauthorized alterations, modifications, repairs, and opening of the product are prohibited.
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