Solar power system integrators and installation contractors can now turn to a single source for the entire DC circuit protection and disconnecting package – from the photovoltaic array to the utility. The new Cooper Bussmann® Combiner Box and DC Safety Switch lines provide application flexibility while adhering to the unique requirements of solar power production.
 

New Combiner Boxes from Cooper Bussmann, the industry leader in critical circuit protection, power management and electrical safety, offer complete flexibility with the number of circuits, enclosure types and fusing options. Sixty popular Combiner Box configurations in NEMA 4X fiberglass and plastic enclosures are in stock and available for our Quik-Ship service with shipment within three business days of the order versus the standard lead time of two to three weeks.
 

Select from three series, all including IP20 finger-safe CH Series modular fuse holders rated up to 30 amps and 600Vdc: The Standard Combiner Box Series (BCBS) includes four to 24 input circuits, is ETL Listed to UL 1741 Standard, and includes finger-safe power distribution blocks. This series is offered in steel or fiberglass NEMA 3, 3R, 4 or 4X enclosures with seamless door gaskets. The Integrated Disconnect Combiner Box Series (BCBD) is an all-in-one package that saves installation time and cost. This series offers the same features as the BCBS Series, but with the added choice of a 28, 55, 75, 150 or 245 amp-rated integrated disconnect to easily disconnect the power for servicing or safety. The space-saving Compact Combiner Box Series (BCBC) is ideal for residential and small commercial solar panel systems. This series utilizes a NEMA 4X polycarbonate enclosure as small as 6.5" x 6.5" x 4", and is available with two to six input circuits.
 

Cooper Bussmann Combiner Boxes can be ordered with fuses installed in the holders, eliminating unnecessary labor and the need for a separate purchase order.
 

The new Cooper Bussmann® Quik-Spec™ Solar DC Safety Switch provides the extra measure of protection as well as application flexibility.
 

This 600Vdc Safety Switch is available in single-pole fused and non-fused versions up to 200A with NEMA 3R, 12 and 4X enclosures, making it easy to apply in solar power applications. The isolated ground terminals (neutral) for grounded conductors and ground lug for equipment grounding conductor are included.
 

Now isolating DC circuits has never been easier or safer. A door interlock prevents opening the door while energized, but can be manually overridden for testing or inspection. A large, clear polycarbonate deadfront, which permits positive visual identification of the switch state, is standard on all models and greatly reduces accidental contact with live parts.
 

The Cooper Bussmann Safety Switch is listed to UL 98 and UL 50 standards, and is marked as suitable for NEC® Article 690 PV applications up to 600Vdc per UL 1741 requirements. The NEC® 690.14. (C) 2 required “PV System Disconnect” label is included. The flange handle is always in contact with the switch mechanism, and utilizes a lockout/tagout provision that accepts up to three padlocks to increase protection of workers.