
Big Lead Assembly (BLA)
Since 2017, the award-winning BLA (Big Lead Assembly) from Shoals has revolutionised electrical balance of system (EBOS) for utility-scale solar—enabling a faster, safer, more reliable, and more cost-effective installation. Now available in 2kV.
35+
YRS design life
Engineered to last for the lifetime of the solar project
10X
Outperforms ipc
In wet hipot test
IEC
COMPLIANT
Ensuring industry standards
- Up to (4) 10mm2 or (8) 6mm2 input leads per BLA mold drop
- Configurable for FSLR S4, FSLR S6, Crystalline, or Bi-Facial
- Plug and Play – eliminates field crimping and splicing
- Patented undermold/overmold process chemically bonds and hermetically seals joints
- Eliminates standard combiner boxes
- Utilises free air ampacity table NEC 310.17
- Standard 5-year warranty on all models
- ETL certified IEC62930 and 62852 up to 1500V DC
- Mini BLA for North – South applications
- Customisable for up to 300mm2 wire gauges
- Messenger cable for mechanical attachment
- Cable available in standards colors
- Snapshot(TM) Source Circuit Monitoring

