Manufactured from high strength aluminum alloy for maximum conductivity and strength. Conductor range input 4-14 AWG Class B and C. Conductor range output 1000 kcmil- 6 AWG Class B,C,G,H,I,K,M and DLO. Configuration – 18 to 42 string inputs and 4 outputs for application versatility. Designed for insulators up to 2000 Volts. For unfused PV string inputs, 30A per string. UL/cUL Recognized to UL486A/B, UL File E6207.