12 String 3 Output Combiner12 String 3 output combiner (Three independent 4 string combiners in one box). Ideal for larger multiple input inverters. Rated for 1000vdc and 30 amps per string. Strain reliefs included. Powder coated aluminum chassis with plastic dead front. 30A fuses and fuse holders included. The MNPV4BY3 is 3R rated and listed for US and Canada.