MCB 40 Amp DC Mini Circuit Breaker 2 Pole

📝 40A DC mini circuit breaker – 2 pole DIN rail

The 40A DC mini circuit breaker (2 pole) is designed to protect 12v, 24v, and higher-voltage DC electrical systems from overloads and short circuits. When current exceeds safe limits, the breaker automatically trips to protect wiring, batteries, and connected equipment.

With a compact DIN rail mount design, this breaker is ideal for caravan, campervan, RV, solar, and off-grid electrical installations. The dual pole switching isolates both positive and negative lines, providing safer circuit protection for DC systems.

⭐ Essential benefits

• Dual pole protection – isolates both positive and negative circuits for improved safety
• Reliable overload protection – automatically trips to protect wiring and equipment
• Manual reset operation – quickly restore power once the fault is cleared
• DIN rail mounting – simple installation in electrical distribution boxes
• Compact design – ideal for caravan, solar, and off-grid installations

This breaker delivers dependable circuit protection while keeping electrical panels organised and safe.

⚙️ Functionality

The breaker continuously monitors current flowing through the circuit. If the load exceeds 40 amps, it automatically trips and cuts power to prevent damage to cables, batteries, or connected equipment.

Once the fault is resolved, the breaker can be manually reset using the switch lever, restoring power to the system.

🔌 Compatibility

• Solar power systems
• Caravan and RV electrical systems
• Campervan battery systems
• Off-grid DC power installations
• DIN rail electrical distribution boards

🧰 Installation difficulty

🟡 3/5 (Moderate) – requires correct wiring and DIN rail mounting inside an electrical enclosure.

🔍 Features

• 2 pole DC breaker – isolates both conductors
• DIN rail mount – fits standard electrical rails
• Manual reset lever – easy power restoration
• Compact enclosure – suitable for tight electrical panels
• High sensitivity trip protection – responds quickly to overload or short circuit
• Indicator window – quick visual status check

📊 Specifications table

📦 What’s included

• 1 × 40A DC mini circuit breaker (2 pole)

🙌 Why choose this product?

A quality DC breaker is essential for protecting solar systems, batteries, and caravan electrical wiring. This unit provides reliable overload protection, safe dual pole isolation, and easy reset functionality for off-grid and mobile electrical systems.

🚀 Our promise

Order today for same-day dispatch and explore our full range of caravan and off-grid electrical components.