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Combiner boxes

Combiner boxes are an integral part of many PV installations, serving as the “meeting place” where the wiring from array series strings come together in parallel connections.


In all but the smallest PV systems, modules are wired together in series strings, where the positive leads of one module are connected to the negative leads of the next module. This results in cumulative voltage output, with current (amps) staying the same. The box where the output wires from multiple series strings are joined is the combiner box. Rated for outdoor use, it contains overcurrent protection devices (OCPDs) and the necessary bus bars and terminals for combining the inputs.

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OutBack Power FireRaptor pigtail wire for first rapid shutdown unit OBFRS-SIGCAB1.8-F OutBack Power FireRaptor pigtail wire for first rapid shutdown unit OBFRS-SIGCAB1.8-F

OutBack Power FireRaptor pigtail wire for first rapid shutdown unit OBFRS-SIGCAB1.8-F, 053-03332

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01601, DC Pass Thru Kit, 1 Strings, Terminal Block DC Pass Thru Kit, 1 Strings, Terminal Block, 01601, Soladeck

01601, DC Pass Thru Kit, 1 Strings, Terminal Block, Soladeck, 053-00250

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01611, AC Pass Thru Kit, 1 Circuit, Terminal Block AC Pass Thru Kit, 1 Circuit, Terminal Block, 01611, Soladeck

01611, AC Pass Thru Kit, 1 Circuit, Terminal Block, Soladeck, 053-00255

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E987N-CAR, Junction Box, 4 X 4 X 4 in., PVC, NEMA 6P, Carlon E987N-CAR, Junction Box, 4 X 4 X 4 in., PVC, NEMA 6P, Carlon

E987N-CAR, Junction Box, 4 X 4 X 4 in., PVC, NEMA 6P, Carlon, 048-06590

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01602, DC Pass Thru Kit, 2 Strings, Terminal Block DC Pass Thru Kit, 2 Strings, Terminal Block, 01602, Soladeck

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Snapnrack Junction Box R, 242-01104, UL listed, 6x5x3, Din mounts, Snapnrack Junction Box R, 242-01104, UL listed, 6x5x3, Din mounts,

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E987R, Junction Box, Rigid, NEMA 6P, 6 X 6 X 4 IN, Carlon Junction Box, Rigid, NEMA 6P, 6 X 6 X 4 IN, E987R, Carlon

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01603, DC Pass Thru Kit, 3 Strings, Terminal Block DC Pass Thru Kit, 3 Strings, Terminal Block, 01603, Soladeck

01603, DC Pass Thru Kit, 3 Strings, Terminal Block, Soladeck, 053-00252

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OutBack Power FW-CBUS-8 FLEXware Combiner Bus 8 Din OutBack Power FW-CBUS-8 FLEXware Combiner Bus 8 Din

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01604, DC Pass Thru Kit, 4 Strings, Terminal Block DC Pass Thru Kit, 4 Strings, Terminal Block, 01604, Soladeck

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01605, DC Pass Thru Kit, 5 Strings, Terminal Block DC Pass Thru Kit, 5 Strings, Terminal Block, 01605, Soladeck

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01613, AC Pass Thru Kit, 3 Circuit, Terminal Block AC Pass Thru Kit, 3 Circuit, Terminal Block, 01613, Soladeck

01613, AC Pass Thru Kit, 3 Circuit, Terminal Block, Soladeck, 053-00257

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01614, AC Pass Thru Kit, 4 Circuit, Terminal Block AC Pass Thru Kit, 4 Circuit, Terminal Block, 01614, Soladeck

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E989N, Junction Box, Rigid, NEMA 6P, 8 X 8 X 4 in., Carlon Junction Box, Rigid, NEMA 6P, 8 X 8 X 4 in., E989N, Carlon

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OutBack Power FW-CBUS-12 FLEXware Combiner Bus 12 Din OutBack Power FW-CBUS-12 FLEXware Combiner Bus 12 Din

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OutBack Power FireRaptor module level rapid shutdown unit OBFRS-01 OutBack Power FireRaptor module level rapid shutdown unit OBFRS-01

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SolaDeck 01632 DC Fused Combiner Kit, 2 Strings SolaDeck 01632 DC Fused Combiner Kit, 2 Strings

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E989R, Junction Box, Rigid, NEMA 6P, 12IN X 12IN X 6in., Carlon Junction Box, Rigid, NEMA 6P, 12IN X 12IN X 6in., E989R, Carlon

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0786K-2C, DC Fused Combiner Kit, 2 Strings, Termin DC Fused Combiner Kit, 2 Strings, Terminal Block, 0786K-2C, Soladeck

0786K-2C, DC Fused Combiner Kit, 2 Strings, Terminal Block, Soladeck, 053-00259

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SolaDeck, NEMA 3R Enclosure, Gray, 5 Position Ground, 0799-5G SolaDeck 0799 Roof Mount Enclosure Combiner UL 1741 NEMA 3R

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MNPV-3, PV Combiner Box, No Disconnect, 3 Breakers, MidNite Solar PV Combiner Box, No Disconnect, 3 Breakers, MNPV-3, MidNite Solar

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0786K-3C, DC Fused Combiner Kit, 3 Strings, Termin DC Fused Combiner Kit, 3 Strings, Terminal Block, 0786K-3C, Soladeck

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SolaDeck 01633 DC 3-String Combiner Kit SolaDeck 01633 DC 3-String Combiner Kit

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MNPV2-1000, String Combiner, 40 A, 1000 VDC, NEMA String Combiner, 40 A, 1000 VDC, NEMA 3R, 2 String, no fuses or fuse holders, MNPV2-1000, Midnite Solar

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0786K-4C, DC Fused Combiner Kit, 4 Strings, Termin DC Fused Combiner Kit, 4 Strings, Terminal Block, 0786K-4C, Soladeck

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MNPV-6, PV Combiner Box, For 150 VDC charge controllers and 600 VDC gridtie inverters, MidNite Solar Combiner Box, For 150VDC charge controllers / 600VDC gridtie inverters, MNPV-6, MidNite Solar

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MNPV4-1000, String Combiner, 60 A, 1000 VDC, NEMA String Combiner, 60 A, 1000 VDC, NEMA 3R, 4 String, no fuses or fuse holders, MNPV4-1000, Midnite Solar

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SolaDeck 01634 DC 4-String Combiner Kit SolaDeck 01634 DC 4-String Combiner Kit

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MNDiscoPCB, Combiner Optional PV power supply, standard with Arc fault combiners, MidNite Solar Combiner Optional PV power supply, standard with Arc fault combiners, MNDiscoPCB, MidNite Solar

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MNPV6-250, PV Combiner Box, No Disconnect, For use with 300VDC breakers, 3 Position, MidNite Solar PV Combiner Box, No Disconnect, For 300VDC breakers, 3 Position, MNPV6-250, MidNite Solar

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