Solar Transition Pass-through Box - Terminal Junction Box - XL Series

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Solar Transition Pass-through Box - Terminal Junction Box


  • All UL Listed Components
  • NEMA 4X, UV Stabilized Rugged Enclosures
  • Din-rail Mounted Terminal Block Connections
  • Models with 3, 6, 9 or 12 Positions + Ground Block
  • Terminal Blocks Rated 57A, 1000V Max


SSTB-XL Series of Solar Transition Pass-through Boxes provide a quick, simple, and easy wiring transition between a micro-inverter trunk cable and standard stranded wire. All connections can be made using only a single #2 Flathead screwdriver. This eliminates the need for any wire nuts or crimp type connectors. The included shorting bar assembles that are included enable combinations of 2 strings to be made, eliminating the need panel Y-connectors, or additional connector boxes. cable glands are included by not installed. Enclosure holes must be drilled in the field. This is done so that you have the option to use conduit fittings for wire entry and exit rather than the cable glands.


Enclosure Rating: NEMA 4X, UL 508
Enclosure Material: All PC/PBT Blended Plastic
Max Current/Voltage: 57A, 1000 V or 500 V. UL, CSA, IEC/VDE
Min/Max Wire Size: 16 – 6 AWG
Terminal Block Torque: 14 lb. in.
Max Temperature: -40 to131 ºF (-40 to 55 ºC)

Models: Enclosure Size
SSTB-XL-3-PE 5.9 x 5.9 x 3.6”
SSTB-XL-6-PE 5.9 x 5.9 x 3.6”
SSTB-XL-9-PE 7.9 x 5.9 x 3.6”
SSTB-XL-12-PE 7.9 x 5.9 x 3.6”