Square D HU361RB safety disconnect for grid-tie inverters that don't have one built in

According to the National Electric Code, section 690.15, PV arrays must have a disconnecting means to isolate the inverter from the PV power source. Utility grid-tie inverters that utilize PV arrays with voltages above 250VDC require a disconnect rated for 600VDC to perform this function.

Wholesale Solar recommends this Square D HU361RB disconnect for use with gridtie inverters that don't already have pre-built disconnects. It is non-fusible, rated at 600 volts DC, and 30 amps. The DC input of up to two sub-array can be connected to the HU361RB and it is outdoor rated so it can be located close to the panels. The Square-D 600VDC 30-amp 3-pole safety switches are UL Listed to handle 13A at 600 VDC per pole. They can be used for disconnecting up to three PV arrays for three grid-tie inverters. It has wiring lugs that are rated to accept two #14 to #10 wires in each lug.

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