Square D DU222RB 60A 240VAC 2-Pole Unfused Safety Disconnect

$89.00

SKU: DU222RB Category:

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On the DC side, the National Electric Code (NEC), section 690.15, requires solar PV arrays to have a disconnecting means in order to isolate the grid-tie inverter from the photovoltaic power source. The DC disconnect utilized to perform this function must be rated at 600VDC. All Square D 600VDC are UL certified and rated NEMA 3R for outdoor use, allowing to mount the DC safety switch close to the solar array or in any other location where is required. They are available in 3-Pole 30A and 60A combined rating. There are fused and unfused versions of the 600VDC safety disconnect. The same disconnect can be used for 3 solar PV arrays. The wiring lugs can accommodate gauge 10-14 wire. The fused 600VDC safety disconnect can be customized to function as a combiner box. The non-fused 600VDC safety disconnect is rated to disconnect individual strings at full rated capacity.

On the AC side of the solar system, the utility company may require an AC safety disconnect between the grid-tie inverter and the electric load center. The AC safety switch is commonly mounted close to the grid service entrance to the building and is required to have a visible and lockable handle. All Square D 240VAC safety disconnects meet code requirements, they are UL certified and rated NEMA 3R for outdoor use. They are available in 2-pole and 3-pole format with 30A, 60A and 100A ratings; the AC disconnect needs to be sized for the full possible output of the grid-tie inverter.

Fuses are not included. Use Class-R fuses for fused disconnects.

Complete list of Square D safety disconnects for photovoltaic systems:

Manufaturer Part no. Rating Voltage Poles Fusible Enclosure
Square D D221NRB 30A 240VAC 2-Pole Fused NEMA 3R
Square D D222NRB 60A 240VAC 2-Pole Fused NEMA 3R
Square D D223NRB 100A 240VAC 2-Pole Fused NEMA 3R
Square D D224NRB 200A 240VAC 2-Pole Fused NEMA 3R
Square D D321NRB 30A 240VAC 3-Pole Fused NEMA 3R
Square D D322NRB 60A 240VAC 3-Pole Fused NEMA 3R
Square D D323NRB 100A 240VAC 3-Pole Fused NEMA 3R
Square D D324NRB 200A 240VAC 3-Pole Fused NEMA 3R
Square D DU221RB 30A 240VAC 2-Pole Unfused NEMA 3R
Square D DU222RB 60A 240VAC 2-Pole Unfused NEMA 3R
Square D DU321RB 30A 240VAC 3-Pole Unfused NEMA 3R
Square D DU322RB 60A 240VAC 3-Pole Unfused NEMA 3R
Square D DU323RB 100A 240VAC 3-Pole Unfused NEMA 3R
Square D H322NRB 60A 240VAC 3-Pole Fused NEMA 3R
Square D H323NRB 100A 240VAC 3-Pole Fused NEMA 3R
Square D H324NRB 200A 240VAC 3-Pole Fused NEMA 3R
Square D H361RB 30A 600V 3-Pole Fused NEMA 3R
Square D H362RB 60A 600V 3-Pole Fused NEMA 3R
Square D H363NRB 100A 600V 3-Pole Fused NEMA 3R
Square D H363RB 100A 600V 3-Pole Fused NEMA 3R
Square D H364NRB 200A 600V 3-Pole Fused NEMA 3R
Square D H365NR 400A 600V 3-Pole Fused NEMA 3R
Square D H367NR 800A 600V 3-Pole Fused NEMA 3R
Square D H368NR 1200A 600V 3-Pole Fused NEMA 3R
Square D HU361RB 30A 600V 3-Pole Unfused NEMA 3R
Square D HU362RB 60A 600V 3-Pole Unfused NEMA 3R
Square D HU363RB 100A 600V 3-Pole Unfused NEMA 3R
Square D HU364RB 200A 600V 3-Pole Unfused NEMA 3R
Square D REHU393IP 100A 1000V 3-Pole Unfused NEMA 3R
Square D REHU394IP 200A 1000V 3-Pole Unfused NEMA 3R
Square D REHU493IP 100A 1000V 4-Pole Unfused NEMA 3R
Square D REHU494IP 200A 1000V 4-Pole Unfused NEMA 3R

Brand

Square D

Square D is an American manufacturer of electrical equipment headquartered in Andover, Massachusetts. The company was originally established in 1903; In 1991, the company was acquired and became a subsidiary of Schneider Electric. They offer a large selection of breakers, switches, load centers, grounding kits, disconnects and more.