Rapid Shutdown Box Specifications
/ Perfect Welding / Solar Energy / Perfect Charging
SLEEK DESIGN
/ Low-prole design that ts
underneath a module for clean
system look
/ Mounting bracket with multiple
mounting options for maximum
exibility
/ NEMA 4X rated for severe
outdoor conditions
EASY WIRING
/ MC4 connectors, spring loaded termi-
nals and external equipment ground lug
make wiring easy
/ 25A rated inputs for up to two strings
per input channel (via MC4 “Y” connec-
tors, not included)
/ Rapid Shutdown Box replaces your
junction box
/ PV-powered: no extra power supply
needed
/ No additional control button needed
RAPID SHUTDOWN BOX
/ The Fronius Rapid Shutdown Box (RSB) provides a convenient solution for NEC 2014 (690.12) compliance, while
enhancing overall rooftop and firefighter safety. Low-profile design, a small foot print installer-friendly mounting and
wiring, make the Fronius Rapid Shutdown Box the ultimate solution for all Fronius SnapINverters* in systems up to
600 V. Directly connected to the inverter through the same conduit as the DC homeruns and powered by the array, the
Fronius solution minimizes the number of components and eliminates the need for an external power supply and
control button.
/ The low-profile design allows for installation underneath the modules, ensuring a clean system look. Thanks to the
NEMA 4X rating, the box is built for severe outdoor conditions. MC4 connectors, spring loaded terminals and generous
wiring space make wiring easy. Rapid Shutdown is triggered when AC is not present at the inverter, rapidly discharging
the DC lines to the inverter. An optional method is to install an emergency stop button to open the signal loop.
/ The convenient rapid shutdown solution for Fronius inverters.
EASY AND COST-EFFECTIVE NEC 2014 COMPLIANCE
* Excluding the Fronius Symo 15.0-3 208
SMALL NUMBER OF COMPONENTS
SAMPLE CONFIGURATION DUO
Combined strings must be an equal number of modules
Accessory Y-connectors not included
Activation wiring
DC wiring