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MCB 20 Amp DC Mini Circuit Breaker 2 Pole
MCB 20 Amp DC Mini Circuit Breaker 2 Pole
SKU:CBDIM20
In stock
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MCB 20 Amp DC Mini Circuit Breaker 2 Pole
📝 20A DC mini circuit breaker – 2 pole DIN rail
The 20A 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 its 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 conductors for safer and more complete circuit protection.
⭐ 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 secure.
⚙️ Functionality
The breaker continuously monitors the current flowing through the circuit. If the load exceeds 20 amps, the breaker automatically trips and disconnects power to prevent damage to wiring and electrical components.
After the issue is resolved, the breaker can be manually reset using the switch lever, restoring power to the circuit.
🔌 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 within 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
| Specification | Detail |
|---|---|
| Rated current | 20A |
| Rated voltage | Up to 1000v DC |
| Poles | 2 pole |
| Mount type | DIN rail |
| Breaking capacity | 4500A |
| Operating temperature | Approx -20°C to 70°C |
| Application | DC electrical protection |
📦 What’s included
• 1 × 20A DC mini circuit breaker (2 pole)
🙌 Why choose this product?
A reliable circuit breaker is essential for protecting solar systems, battery wiring, and caravan electrical setups. This breaker provides fast overload protection, safe dual pole isolation, and easy reset capability for dependable off-grid power systems.
🚀 Our promise
Order today for same-day dispatch and explore our full range of caravan and off-grid electrical components.

Our Commitment
At Campervan Builders, our commitment is simple: we only supply quality campervan, caravan, motorhome, and RV parts that we’ve personally tested in real off-grid conditions. From interior LED lighting to Starlink 12V conversion kits, every product is chosen for reliability, durability, and ease of installation. We back this with fast shipping Australia-wide, friendly support, and honest advice to help DIY builders and professionals alike. When you shop with us, you’re choosing proven gear that keeps you connected and comfortable on every adventure.
















