Based off the design pioneered by Anderson in 1953, APP® ’s two pole SB® connectors set the standard for DC power distribution and battery connections. SB® 50 connectors feature a one piece plastic housing using stainless steel springs to hold low resistance contacts in place. Wires sizes from #16 (1.5 mm²) to #6 (13.3 mm²) are held in the smallest of the SB® series housings.