FRONIUS SYMO ADVANCED IS UL 3741 CERTIFIED

WHAT IS UL 3741?

UL 3741 is a solution to the NEC 690.12 requirement of module level rapid shutdown within a photovoltaic (PV) solar system. According to UL’s website, UL 3741 provides “a means of evaluation for PV hazard control components, equipment and systems that reduce shock hazards from energized PV system equipment and circuits in a PV array. It is specifically intended to establish and expand requirements for the evaluation of a rapid-shutdown PV array that can keep firefighters out of hazardous current paths when responding to emergency situations in homes and buildings with PV systems.”

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 PanelClaw®, IronRidge®, and UNIRAC® racking 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.

UNIRAC®

2023* NEC 690.12 Controlling Conductors within the array boundary
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.

*Also compliant with the 2017 and 2020 versions of the NEC

More about UNIRAC®

IRONRIDGE^®

2023* NEC 690.12 Controlling Conductors within the array boundary.
The BX 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.

* Also compliant with the 2017 and 2020 versions of the NEC

More about IRONRIDGE®

PANELCLAW^®

2023* NEC 690.12 Controlling Conductors within the array boundary.
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.

* Also compliant with the 2017 and 2020 versions of the NEC

More about PANELCLAW®

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. Learn more

Disclaimers

Fronius is not affiliated with Esdec Solar Group
PanelClaw® and IronRidge® are not Fronius products
Fronius is not responsible for installation or support of PanelClaw® or IronRidge® racking systems. It is the installer’s responsibility to comply with all applicable national, state or local codes, procedures, and product and safety standards, follow installation instructions provided by manufaturer, use recommended parts, and ensure proper electrical requirements. For more information about installer’s responsibilities, visit the manufacturer’s website. (LINKS ABOVE)
The Fronius Symo Advanced is the only Fronius inverter that is certified under UL 3741. This certification does not include the Primo or Symo models.

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