The SigenMicro AC Trunk-20P-2.3M-2.5 is the pre-terminated AC bus cable used to connect a string of SigenMicro microinverters together on a rooftop PV array. It carries the AC output from each microinverter back to the junction box, with connectors already moulded on at 2.3m intervals so no on-site crimping is needed.
This variant is built for landscape-oriented PV modules, where the wider 2.3m panel spacing matches the row-to-row microinverter positions. It ships with 20 pre-fitted connectors across a 46m total length, and the cable can be cut to the exact length needed on site, so installers only carry one trunk product for the whole roof run rather than a bag of loose leads.
Conductor cross-section is 2.5mm², matched to the SigenMicro 400/500/800/1000W inverter range, and every joint uses the same locking connector system as the rest of the SigenMicro kit, so trunk sections, couplers and terminators all click together without tools other than the dedicated unlock tools.
Landscape
PV Module Orientation
Cut-to-Length
On-Site Trimming
Please Note
This trunk cable is sized for landscape-mounted PV modules. For portrait-oriented arrays, which use a tighter 1.1m connector interval, choose the SigenMicro AC Trunk-40P-1.1M-2.5 variant instead — installing the wrong interval on a given roof layout will leave connectors stranded between microinverters.
Pre-Terminated Connectors
Arrives with 20 connectors already moulded onto the cable at fixed 2.3m spacing, removing the need for on-site crimping or splicing.
Cut As Needed
The 46m integrated trunk can be cut to length on installation, so a single reel covers rows of varying size without waste stock of multiple fixed lengths.
Matched to Landscape Layouts
The 2.3m interval is designed around landscape PV module widths, keeping each connector aligned directly under its microinverter.
Weatherproof Locking Connectors
Uses the SigenMicro locking connector system, compatible with the dedicated AC Trunk Unlock Tool and AC Trunk Port Cap for a fully weatherproof rooftop run.
Extendable with Couplers
Additional length beyond the standard reel can be added using the SigenMicro AC Trunk Coupler, joining trunk cable to further trunk cable or field-supplied AC cable.
High Reliability Build
Described by the manufacturer as a highly reliable integrated AC Trunk Cable, built for long-term outdoor rooftop exposure across the array.
Cable
Product Code
SigenMicro AC Trunk-20P-2.3M-2.5
Conductor Diameter
2.5 mm²
Number of Connectors
20 pcs
Recommended Layout
Landscape PV modules
Compatibility
Used With
SigenMicro 400 / 500 / 800 / 1000W microinverters
Compatible Accessories
SigenMicro AC Trunk Coupler, AC Trunk Port Cap, AC Trunk Terminator, AC Trunk Unlock Tool
Installation
Rooftop solar, multi-microinverter strings
Important Safety Information
AC trunk cable installation and grid connection must be carried out by a qualified electrical installer in accordance with local wiring regulations. Unused trunk ends must be sealed with an AC Trunk Port Cap or Terminator to maintain the system's weatherproof rating.
What is the difference between the 20P-2.3M and 40P-1.1M trunk cables?
The 2.3m interval, 20-connector version is designed for landscape-oriented PV modules, while the 1.1m interval, 40-connector version suits portrait-oriented modules where microinverters sit closer together along the row.
Can this trunk cable be cut to a shorter length?
Yes. The cable is described by the manufacturer as "cut as needed", so installers can trim the 46m trunk down to match the exact roof run required.
What do I do with unused connectors at the end of a run?
Fit a SigenMicro AC Trunk Port Cap over any unused connector, or a SigenMicro AC Trunk Terminator at the physical end of the cable run, to keep the connection weatherproof.
Can I join two lengths of this trunk cable together?
Yes, using a SigenMicro AC Trunk Coupler, which extends the trunk cable or joins it to field-supplied AC cable.
Which microinverters is this cable compatible with?
It is designed for the SigenMicro 400, 500, 800 and 1000W microinverter range, using the 2.5mm² conductor size matched to those models.
