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PV Combiner and Safety Disconnect

OutBack Power Systems now offers a PV array combiner which can be used with a wide variety of PV system designs and module configurations. The PSPV can be configured with DC breakers for low voltage systems (under 125 VDC) or touch safe type fuse holders for high voltage systems (up to 600 VDC). The PSPV is designed to provide NEC code compliant over-current protection and interconnection of multiple PV panels or sub-arrays into one or more PV arrays for connection to charge controllers or inverter systems. The PSPV is easily field configured to match your system design and ampacity requirements - It is shipped without the breakers or fuse holders installed – order the quantity, type and amperage needed.

Standard Features and Components

• Outdoor, rainproof powder-coated aluminum enclosure – can be installed on vertical or sloped surfaces or pole mounted.
• Snap in DIN rail mounting spaces for up to twelve 125 VDC rated OutBack PV breakers. The circuit breakers are hydraulic-magnetic type and are not affected by high ambient temperatures. 10 year warranty on the PV breakers. For 12, 24, 48 and 60 VDC systems with PV array open circuit voltages up to 125 VDC. Load break rated.
• Also available with touch safe type midget fuse holders for high voltage systems up to 600 VDC.
• Dual positive breaker combiner busbars – can be installed to provide one or two PV output circuits.
• PV negative terminal bus bar (TBB) with mounting holes for an additional TBB.
• #1/0 AWG set-screw compression type box lug terminals for output wiring – accepts bare cable.
• Four ¾" and 1" conduit knockouts – one on the bottom, back and each side – enough space provided on bottom and back to allow up to a 2" conduit punch for larger cabling.
• Eight ½" knockouts on bottom for PV module or sub-array input conduits or strain reliefs.
• #1/0 AWG ground lug - can be mounted either on the inside or outside surface.
• For negative or positive ground PV systems.
• Space allowed for the addition of current sensors and lightning protection components.

  A PV combiner box is also available for high voltage "string" arrays. The PSSB is particularly well suited for converting 48 volt arrays to series string (high voltage) configurations without rewiring the PV array. The PSSB's unique "segmenting" breaker connects the 48 volt sub-arrays in series when switched to the on position sending high voltage to the string inverter.