Rocksolar 4 to 1 Solar Branch Connectors MMMMF+FFFFM Pair
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Rocksolar 4 to 1 Solar Branch Connectors MMMMF+FFFFM Pair
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What it is, and what it is for
ROCKSOLAR 4-to-1 Solar Branch Connectors, MMMMF + FFFFM pair
A pair of MC4 branch connectors that joins four solar panels in parallel into one positive and one negative lead: four 100 W to 200 W panels on an RV or cabin roof feeding one charge controller. IP67 sealed, UV-resistant, snap-lock.
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 MMMMF side joins the positives and the FFFFM side the negatives, so the two output leads plug straight into the controller's PV input or an extension cable. Only parallel panels of the same voltage, and fuse each panel if more than two are combined; the output carries the sum of the panel currents, so size the downstream cable for that.
Four panels in parallel can push 40 A or more through the output, so check the controller's rating and use 8 AWG or heavier cable on the combined run. Wiring is for reference; on a permanent installation a licensed electrician should make the connections.
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Every number, by component.
The figures the manufacturer publishes. The datasheet above is the reference if the two ever differ.
| Configuration | 4 to 1: one MMMMF and one FFFFM connector |
|---|---|
| Connector standard | MC4-compatible, snap-lock |
| Rating | MC4 standard: 1,000 V DC, 30 A |
| Enclosure | IP67, UV- and ageing-resistant housing |
| Use | Parallel connection of panels with the same voltage |
| Warranty | 1 year |
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