The second generation ABB rapid shutdown solution for 600V systems is even easier to implement. This behind the module product provides a fail-safe solution for emergency responders to eliminate voltage at the PV array in compliance with NEC
2014 Rapid Shutdown code requirements. The ABB Rapid Shutdown system requires no extra conduit; minimizing additional
material cost and associated labor.
Shutdown occurs at the rooftop box when utility
power is lost or when the PV system’s AC disconnect
switch is opened. The Rapid Shutdown box can mount
directly to the PV mounting rail or PV module and lay
parallel to the roofing surface. The NEMA 4X design
permits installation angles from 0-90° while
maintaining its water-tight seal from snow and rain.
Two models are available to cover all system
configurations; including a single input/output
version and a two-input/two-output version.
The unique features of each box can be used to
maintain the specific configuration of the PV system. Dual outputs in the box maintain the benefits of ABB’s
dual MPPT inverter channels, while the single output
box is perfect for small PV arrays utilizing one MPPT
channel or systems requiring two rapid shutdown
boxes. To further reduce system cost, the input
channels are rated up to 25A allowing paralleled
strings on one input.