Fronius QUATTRO Rapid Shutdown Box WIth Four Input Strings Two Output Strings

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Quick Overview

  • Max. input current: 25 A
  • Max. voltage: 600 V
  • Protection class: NEMA 4X
  • DC disconnect: Yes
  • Number of conduit ports: 2
  • Fronius QUATTRO Rapid Shutdown Box WIth Four Input Strings Two Output Strings

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    Fronius QUATTRO Rapid Shutdown Box, four input strings, two output strings, 25 A max ea, 600 VDC max

    Fronius DUO and QUATTRO Rapid Shutdown Boxes

    The redesigned Fronius Rapid Shutdown Box enables compliance with NEC 2014 and current NEC 2017 article 690.12 which requires a rapid shutdown function for PV systems on buildings. These boxes are reliable and easy to install for Fronius Primo single-phase inverters from 3.8 kW to 15 kW.

    The boxes now feature a low profile design that cleanly fits underneath the modules, and includes mounting bracket to easily attach to a rail. MC4 input connectors rated up to 25A are provided on the DC input side, and spring loaded terminals are provided for quick and easy wiring on the output circuits. Using MC4 branch or “Y” connectors, one can wire two strings per input circuit, for up to two strings using the DUO rapid shutdown box, and up to for strings with the QUATTRO rapid shutdown box.

    The box is triggered whenever AC is not present to the inverter, and the voltage and current within the DC wiring between the array and the inverter is quickly discharged. The box is NEMA 4X rated, and the DUO box can accommodate one or two DC Strings, while the QUATTRO box can accommodate two, three, or four DC strings, with a maximum rating of 600 VDC and 25 A per combined output circuit.


    Brand Fronius QUATTRO
    Manufacturer Part Number 4240154
    Max. input current 25 A
    Max. voltage 600 V
    Power supply DC powered by the array (max. 3W)
    Max. DC homerun wire size AWG 8
    DC disconnect Yes
    Protection class NEMA 4X
    Temperature range 40° - 140° F (-40° - +60° C)
    DC input wire size AWG 10 to AWG 12
    Max. communication wire size AWG 14
    Number of conduit port 2
    Conduit size 3/4 in.
    Certifications and compliance with standards UL1741, FCC Part 15 Class B, NEC 690.12
    Length 13.8
    Width 11.5
    Height 2.8
    Weight 6.0

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