Fronius Rapid Shutdown Box Quattro Simplifies Compliance
The Fronius Rapid Shutdown Box Quattro is a string-level rapid shutdown device that helps Fronius SnapINverter systems meet NEC 2014 690.12. It mounts low under the modules, replaces the rooftop junction box and handles up to four strings.
It is powered by the PV array, so there is no separate power supply and no extra button to install.
Why You'll Love The Fronius Rapid Shutdown Box Quattro
Code compliance made simple. Built for NEC 2014 690.12, it de-energizes your rooftop strings when AC is no longer present at the inverter.
Up to four strings in one box. Two 25A MC4 inputs each take up to two strings with MC4 Y connectors, so one box can cover a typical home array.
Nothing extra to power. The box runs from the PV array itself, which means fewer parts and fewer wires on the roof.
Made for rooftops. A NEMA 4X / Type 4X enclosure, low profile and a -40 to 149°F operating range suit outdoor installs across the US.
Your life, with the Fronius Rapid Shutdown Box Quattro
Your inspector signs off without a second visit. Firefighters know your roof can be made safe quickly. You get on with enjoying your solar savings, knowing the system meets code and protects anyone who may one day need to work on it.
The Fronius Rapid Shutdown Box Quattro in a nutshell
Automatic shutdown
Triggers when AC is not present at the inverter. An optional emergency stop can open the signal loop.
Junction box replacement
Replaces the rooftop junction box, with spring terminals for the homerun and an external EGC lug.
Flexible mounting
Low-profile design that sits under the modules, with a bracket that offers several mounting options.
Fronius compatibility
Works with Fronius Galvo, Primo and Symo inverters up to 600V (Symo 15.0-3 208 excluded). Primo 10.0 to 15.0 needs the inverter software update listed in the datasheet.
Fronius Rapid Shutdown Box Quattro specifications
Input
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Max input voltage: 600VDC
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Start voltage: 80VDC
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Max input current: 25A / 25A
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Inputs: 2 x MC4 (4 with MC4 Y connectors, not included)
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Max number of strings: 4
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Power supply: From the PV array, approx. 2W consumption
Output and wiring
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Max output current: 25A / 25A
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Output terminals: 2 x spring clips
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Homerun conductor: Up to AWG 8
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Communication wire: AWG 14
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Conduit ports: 2 (3/4 in and 1 in)
General
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Dimensions: 13.8 x 11.5 x 2.8 in (351 x 293 x 71.5 mm)
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Weight: 6 lb (2.7 kg)
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Enclosure: NEMA 4X / Type 4X
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Operating temperature: -40 to 149°F
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Relative humidity: 0 to 100%
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Max altitude: 13,123 ft
Certifications
- NEC 2014 690.12
- UL 1741
- LTR AE-004-2015
- FCC Part 15 Class B
Let the experts help you find your perfect Fronius Rapid Shutdown Box Quattro setup
Not sure if you need one box or two, or which inverter software your Primo needs? Send us your string layout and we will check it for you.
Email support@kratopower.com or call +1 888-855-7286.
Fronius Rapid Shutdown Box Quattro documents and materials
Safety disclaimer: PV arrays produce dangerous DC voltage whenever light is present. Installation should be carried out by a licensed electrician in line with the NEC, local codes and the manufacturer's instructions. You use this product at your own risk. The content on this page is general product information, not professional or medical advice. If you have any doubt, consult a qualified professional.
