Square D Safety Disconnect Model: HU363RB. Square D safety disconnect isolates your solar PV array. Fused and rated up to 100 amps Square D safety disconnects are used for solar PV array protection. NEC compliant and high quality construction. Square D safety disconnect HU363RB for 100 amps.
Amps: 100 Amps
Poles: 2 or 3 for PV
For solar PV installations in the US NEC National Electric Code, section 690.15, requires solar PV arrays to have a disconnecting means to isolate the inverter from the solar PV power source.
Most utility grid-tie inverters which use PV solar arrays with voltages above 250 VDC require a 600 VDC rated disconnect to perform this function.
Inverters that do not include a DC disconnect, the Square D safety disconnect can be used.
Square-D 600 VDC 100 A 3-pole safety switches are rated by the Square D to handle one 600 VDC circuit per pole.
Square -D has a 100 Amp switch rated for 80 Amps for non-fused and 64 Amps for fused. Safety disconnects from Square D can be used for disconnecting up to 3 PV arrays for 3 grid-tie inverters.
Square-D 600 VDC disconnects are rated for disconnecting one circuit at full rated power using 2 poles in series.
Often utilities using solar PV require an AC disconnect between a grid-tie inverter and the AC load center with a visible and lockable handle. Use an AC load center to connect multiple inverters to a single disconnect for larger solar PV arrays.
Square D safety disconnect breakers can be back-fed with the inverter outputs, and the load center main lugs will handle the combined outputs to be connected to the AC disconnect.
Use Class R fuses of the proper voltage and amperage for fused disconnects. Please Note: 600 V fuses will not fit into 240 V disconnects, and 250 VAC/125 VDC fuses will not fit into 600 V disconnects.
Dimensions (Inches): 21.5 x 8.5 x 6.38
Weight: 24 lb.