Dinkle Solar Combiner DK4N 10 Gang Box Connector DIN Rail Terminal Blocks, 10-22 AWG, 30 Amp, 600 Volt Power Distribution: Amazon.com: Industrial & Scientific
2.54mm/0.1 Pitch Terminal Block - 4-pin : ID 2137 : $1.55 : Adafruit Industries, Unique & fun DIY electronics and kits