MC4 Diode Connector

MC4 Diode Connector is an integrated inline solar connector with built-in anti-reverse blocking diode, designed for PV panel string protection and reverse current prevention.

It complies with IEC 62852 standards, supports DC 1000V/1500V and 15A/20A/30A. The connector features IP67 waterproof, UV-resistant and UL94 V-0 flame-retardant PPO housing for long-term outdoor use.

The tinned copper conductor ensures low contact resistance below 0.5mΩ, and insulation resistance reaches ≥500MΩ at DC 500V, providing safe and stable electrical performance.

Adopting standard MC4 male-female structure, it fits 2.5-6mm² solar cables, with stable locking and quick crimping. It can work reliably in a wide temperature range from -40℃ to +85℃.

This product effectively stops night-time current backflow, soge and hot-spot risks. It is widely used in on-grid, off-grid and commercial photovoltaic systems.

Strong Point

• Unidirectional conduction with clear polarity.
• Standard specifications: 1000V, 10A/15A/20A/30A
• Improves efficiency and prevents module hot-spot damage

Usage environment:

MC4 Diode Connector is specially designed for outdoor and indoor photovoltaic systems, suitable for various on-grid, off-grid, and commercial solar power installations. It can operate reliably under outdoor weather conditions, including direct sunlight, rain, dust, humidity and wind.

This connector works stably in a wide temperature range from -40℃ to +85℃, with strong resistance to ultraviolet radiation, ozone corrosion and thermal cycling. It is widely applied in outdoor solar panel arrays, PV combiner boxes, inverter connections, battery charging circuits and solar string protection scenarios.

With IP67 waterproof and dustproof rating, it can be used in outdoor open environments, coastal areas, industrial sites, agricultural photovoltaic projects, and other harsh working environments. It is suitable for long-term outdoor use without aging, cracking or performance degradation.

It is ideal for environments requiring anti-reverse current protection, preventing night-time backflow, hot-spot effect and component damage.

• Our MC4 Diode Connector is built for real solar system safety and reliability. With an integrated anti-reverse blocking diode, it effectively prevents night-time current backflow, panel damage, hot-spot effects and energy loss, protecting your entire photovoltaic system.
• High-purity tinned copper conductor provides low contact resistance below 0.5mΩ, while insulation resistance reaches ≥500MΩ, guaranteeing low loss, high safety and long-term stability.
• Standard MC4 male-female structure enables tool-free quick installation, perfect compatibility and stable locking. It is easy to crimp, connect and maintain, saving installation time and labor cost.
• Choosing our MC4 Diode Connector means higher safety, longer service life, better compatibility and lower failure rate for your solar system. It is the ideal and cost-effective solution for residential, commercial and industrial PV projects.