Fronius Symo Advanced
is UL 3741 Certified
What is UL 3741?
NEC 690.12 background
2020 NEC 690.12 Rapid Shutdown of PV Systems on Buildings requires that all PV arrays installed on buildings shall include rapid shutdown functions to reduce shock hazard for Fire Fighters in accordance with 690.12 (For further information regarding NEC 690.12, refer to manufacturer’s website)
The solution
Fronius Symo Advanced
The Fronius Symo Advanced string inverter is UL 3741 certified for use with listed flat roof systems when the inverter is installed within the 1 ft array boundary. This certification eliminates the need for module level rapid shutdown devices. When modules are properly mounted with either of these UL 3741 approved PV Hazard Control commercial installation systems, the Fronius Symo Advanced is NEC 690.12 compliant.
All mounting systems are UL 3741 certified according to 2023 NEC 690.12 Controlling Conductors within the array boundary (Also compliant with the 2017 and 2020 versions of the NEC).
UNIRAC®
UNIRAC® Flat Roof Systems (RM10 EVO, RM10 LEGACY, RMDT, RM5, ECOFOOT 2+, ECOFOOT 5D, GRIDFLEX 5) are UL 3741 Listed systems that comply with NEC 690.12 when installed by qualified persons per the installation procedures outlined in the UNIRAC® UL 3741 Installation Guide.
For installation instruction manuals, procedures and product requirements, click the link below to be directed to manufacturer’s website
IRONRIDGE®
The BX Ballasted flat roof Photovoltaic Hazard Control System (PVHCS) is a UL 3741 Listed system that complies with NEC 690.12 when installed by qualified installers per the installation procedures outlined in the BX System Installation Manual.
For installation instruction manuals, procedures and product requirements, click the link below to be directed to manufacturer’s website.
PANELCLAW®
The clawFR Photovoltaic Hazard Control System (PVHCS) is a UL 3741 Listed system that complies with NEC 690.12 when installed by qualified persons per the installation procedures outlined in the clawFR System Installation Manual.
For installation instruction manuals, procedures and product requirements, click the link below to be directed to manufacturer’s website.
SCHLETTER®
The FixGrid Pro flat-roof mount is a UL 3741 Listed system that complies with NEC 690.12 when installed by qualified installers per the installation procedures.
For installation instruction manuals, procedures and product requirements, click the link below to be directed to manufacturer’s website.
AEROCOMPACT®
The SN2 and COMPACTFLAT S bracket-based flat roof system are UL 3741 Listed systems that comply with NEC 690.12 when installed by qualified persons per the installation procedures listed on the manufacturers instructions.
- Module sizes up to 98.4 in x 51.60 in / 1310 x 2500 mm
- Low point loads
- Short-side and long-side clamping
- High wind and snow loads
- Versatile system with few components
- Preassembled components, plug & play
K2 SYSTEMS®
The South Face flat roof system is a UL 3741 Listed system that complies with NEC 690.12 when installed by qualified persons per the installation procedures.
- Adjustable Inter-row spacing 8-18"
- 2-part system, optional accessories
- Pre-assembled clamps twist into place
- Pre-installed mats with load/movement absorption
- Module staging tabs for easy row alignment
- South and North edge tucked chassis
KB Racking®
The Aerogrid and EkonoRack 2.0 flat roof racking systems are UL 3741 listed and comply with NEC 690.12 when installed by qualified persons per the installation procedures outlined in the KB Racking installation manual.
Aerogrid
- Grid-based system with low ballast requirements
- Click-in components for easy tool-less installation
- Customizable row spacing
EkonoRack 2.0
- Non-penetrating solar mount solution
- Composed of only one major component
- Pre-attached roof mats
Fronius rooftop solution
It is required by Fronius USA, in accordance with our installation manual, that the Fronius Shade Cover be used when the Fronius Symo Advanced is installed in direct sunlight.
This solution allows you to:
- Place inverter next to array
- Lay flat or tilt up
Benefits:
- Protects from harsh weather conditions
- Keeps inverter’s temperature low and performance high
- UL 3741 code compliance
More about the Fronius Symo Advanced
The Fronius Symo Advanced is the ideal compact three-phase inverter for commercial and industrial applications. Get to know more about the technical specifications of the Fronius Symo Advanced.Disclaimers
- Fronius is not an affiliate of any racking system companies
- The above UL 3741 listed racking systems are not Fronius products
- Fronius is not responsible for the installation or support of the above racking systems. It is the installer’s responsibility to comply with all applicable national, state, and local procedures, follow manufacturer installation instructions and products and safety standards, use recommended parts, and ensure proper electrical requirements during installation. Please visit the manufacturer’s website for additional information.
- UL 3741 certification is for the Fronius Symo Advanced only and does not include the Primo and Symo SnapINverter or the Fronius GEN24