K&N 25A-450V – 18A-800V Single String DC Switch Disconnector

🔌 K&N 25A–450V / 18A–800V Single String DC Switch Disconnector

The K&N 25A-450V – 18A-800V Single String DC Switch Disconnector is a robust, compact isolator designed specifically for solar photovoltaic (PV) systems. With dual voltage/current ratings of 25A at 450V DC and 18A at 800V DC, this disconnector is perfect for safely isolating a single PV string in both residential and commercial solar installations.

Built for safety, reliability, and ease of installation, it features arc-resistant switching, flame-retardant housing, and DIN rail mounting, making it a trusted solution for electricians and solar installers.

✅ Key Features

• ⚡ Rated for High-Voltage DC – 25A @ 450V or 18A @ 800V DC, ideal for modern PV arrays

• 🔌 Single String Isolation – Designed to disconnect one PV string safely and efficiently

• 🛠️ DIN Rail Mounting – Compact form factor for fast, clean installations in combiner boxes or DB boards

• 🔒 Manual Operation with Clear ON/OFF Indication – Ensures full disconnection during service or emergency

• 🔥 Flame-Retardant & UV-Resistant Housing – Engineered for harsh environments

• ✅ Compliant with International Standards – Meets IEC and safety specifications for solar DC isolators

🛠️ Applications

• DC isolation between PV string and MPPT input

• Rooftop, ground-mount, or off-grid solar installations

• Combiner boxes or inverter-side DC disconnection

• Residential and small commercial solar systems

• Solar maintenance, upgrades, and safe servicing

📊 Technical Specifications

🌍 Available for Worldwide Delivery

At Solar Power Africa, we provide trusted, installer-grade components built for performance and safety. The K&N Single String DC Disconnector gives you reliable isolation where it matters most — protecting people, systems, and power flow.

🔒 Ensure safe disconnection and system protection — order your K&N DC Switch Disconnector today!