ROCKSOLAR 2 to 1 Solar Branch Connectors MMF+FFM Pair
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From ROCKSOLAR
ROCKSOLAR 2-to-1 Solar Branch Connectors MMF + FFM pairA pair of MC4 Y-connectors that joins two solar panels in parallel into one positive and one negative lead. Sealed to IP67 with a UV-resistant housing they live on the roof or the rack for the life of the array.Panels wired in parallel keep the array at one panel's voltage and add the currents together which is the right layout for a PWM controller a 12 V or 24 V battery bank or any MPPT whose open-circuit limit rules out a series string. Use one pair per array: the MMF side joins the positives and the FFM side the negatives so the two output leads plug straight into the controller's PV input or an extension cable.