MC4 Inline Diode Connector, 1000V Solar Bypass / Blocking Diode for PV Panels – 10A/15A/20A/30A, IP67 Waterproof, Pre-Wired Plug-and-Play
Stop reverse current and hot-spot damage — before it starts.
When one panel in a string is shaded, it doesn't just underperform — it can become a load, heat up, and drain power from the healthy panels. This inline MC4 diode drops straight into your string and gives you a dedicated bypass or blocking diode in seconds, no soldering, no junction box surgery. Just plug it in and the diode does the rest: it blocks reverse current at night and around shading, keeping healthy panels working at full power.
Available in 10A, 15A, 20A, and 30A ratings to match your panel short-circuit current. The housing is the same UV-stabilized PPO and tin-plated copper as our MC4 connectors, sealed to IP67 once mated, rated for -40°C to +85°C and tested to IEC 62852. No heat-shrink, no crimping, no guesswork about diode orientation — the arrow on the body shows you the flow direction.
Sold as one pre-wired inline diode connector (male to female). Choose your current rating at checkout.
ey Features:
- 🔀 Bypass or blocking diode in one plug — Stops reverse current at night, protects shaded panels from hot-spot heating
- ⚡ 10A / 15A / 20A / 30A options — Match the rating to your panel's short-circuit current (Isc)
- 🔌 Pre-wired, no soldering — Arrow on housing shows correct flow direction; plugs straight into any MC4
- 🌧️ IP67 outdoor sealed — PPO housing, UL94-V0, -40°C to +85°C, IEC 62852 certified
- 💰 Cheaper than a combiner box — Add per-string protection without the cost and space of a PV combiner
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