Renogy M Branch Parallel Adapter Cable Pair for Solar Panels

The Renogy M Branch Parallel Adapter Cable pair consists of one MMMF cable and one FFFM cable, together allowing three solar panels to be wired in parallel through a single M-type branch connection. Each connector is rated 30A and 1500V DC (IEC), with tin-plated copper contacts and a polycarbonate housing that meets IP67 protection when mated.

Three Panels, One Branch Connection

Wiring three solar panels in parallel with the M Branch Parallel Adapter Cable pair keeps the system voltage the same as a single panel while combining their current output. That means a larger array can feed a charge controller without requiring a separate combiner box or additional wiring runs, saving both cost and installation complexity on a roof rack, trailer, or ground-mount setup.

Built for Outdoor Conditions

The M Branch connectors carry an IP67 protection rating when mated, meaning they are sealed against dust ingress and temporary water immersion. The polycarbonate housing resists UV degradation and high temperatures, and the tin-plated copper contacts resist oxidation over time. The operating temperature range of -40°C to 90°C (-40°F to 194°F) covers the extremes a rooftop or ground-mounted array encounters across seasons.

Secure Lock, Low Contact Resistance

A built-in locking mechanism holds each mated pair firmly in place without tools, preventing accidental disconnection from vibration or cable tension. Contact resistance of 0.5mΩ keeps resistive losses at the junction minimal, which matters in a high-current parallel branch where even small resistance differences between legs can affect current sharing. Disconnecting the connectors intentionally requires a connector removal spanner.

Features

• Rated 30A / 1500V DC (IEC): suitable for high-voltage solar strings and large parallel arrays
• IP67 mated / IP2X unmated: sealed against dust and temporary water immersion when connected
• Tin-plated copper contacts: 0.5mΩ contact resistance with anti-oxidation treatment
• Fits 14AWG to 10AWG wire: accommodates 2.5mm², 4mm², and 6mm² single-core cable
• Built-in locking mechanism: secure connection without additional hardware
• UV and high-temperature resistant housing: polycarbonate insulation, UL94-V0 flame class

Specifications

Who This Is For and Isn't

The M Branch Parallel Adapter Cable pair suits builders wiring exactly three solar panels in parallel on an overlanding rig, trailer, van roof, or cabin array, using 14AWG to 10AWG (2.5mm² to 6mm²) single-core solar cable and standard M-type connectors.

This pair is not designed to connect fewer than three panels or to branch more than three panels in a single adapter. It is not rated for AC wiring. Wire sizes outside the 2.5mm² to 6mm² range are not compatible with this connector.

Common Questions

What does this M Branch Parallel Adapter Cable pair actually do?

The M Branch Parallel Adapter Cable pair connects three solar panels in parallel through a single branch junction. One MMMF cable and one FFFM cable work together so the combined current from all three panels flows to a single output connection, keeping system voltage equal to one panel's output voltage.

What wire gauges are compatible with these M Branch connectors?

The M Branch connectors accept 14AWG to 10AWG solar wire, corresponding to single-core cable cross-sections of 2.5mm², 4mm², and 6mm². Wire outside this range is not compatible with the connector's cable entry.

Why do the M Branch connectors feel so tight once mated, and how are they removed?

The M Branch connectors use a built-in locking mechanism that holds the mated pair firmly sealed. The tight fit is intentional: it contributes to the IP67 protection rating. Disconnecting them requires a connector removal spanner; they are not designed to pull apart by hand.

What does the IP67 rating mean for these connectors in outdoor use?

IP67 mated means the M Branch connectors are fully sealed against dust and can withstand temporary water immersion when connected. When unmated, the rating drops to IP2X, meaning the open contacts have limited protection, so connectors should be mated or capped when not in use in wet conditions.