Fronius Symo Advanced inverters, typically used in commercial settings, are now UL 3741 certified in conjunction with PanelClaw and IronRidge mounting systems.
UL 3741 is a solution to the NEC 690.12 requirement of module level rapid shutdown within a solar system. The UL certification confirms that a solar system using a combination of approved inverters and mounting systems complies with rapid shutdown rules without needing module-level shutdown devices.
Fronius Symo Advanced inverters are approved to comply with NEC 690.12 with the following mounting systems:
clawFR 5° (PanelClaw)
clawFR 10° (PanelClaw)
Dual tilt flat roof (PanelClaw)
BX Ballast System (IronRidge)
The Symo Advanced string inverter is UL 3741 certified for use with the PanelClaw and IronRidge racking systems when the inverter is installed within the 1-ft array boundary.
News item from Fronius