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40 Amp Flush Mount DC Circuit Breaker
40 Amp Flush Mount DC Circuit Breaker
SKU:CB40
In stock
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40 Amp Flush Mount DC Circuit Breaker
📝 40A Flush Mount DC Circuit Breaker
The 40A Flush Mount DC Circuit Breaker provides reliable, waterproof circuit protection for 12v–48v systems. Designed for campervans, RVs, and marine setups, it prevents damage caused by overloads, short circuits, and wiring faults. Featuring a manual reset function and clean panel-mounted design, it also doubles as a convenient power disconnect switch.
Built with pure copper internals and IP67-rated housing, this breaker offers dependable performance and long-term durability, even in demanding off-grid or marine environments.
⭐ Essential Benefits
• Manual reset design – push-button reset with a visible trip lever for easy diagnostics.
• Dual-function use – serves as both a circuit breaker and a master disconnect switch.
• 12v–48v compatibility – suitable for a wide range of DC electrical systems.
• Flush mount design – provides a sleek, professional finish on panels or dashboards.
• Waterproof protection – IP67 housing prevents dust and splash ingress.
• Copper internals – ensures excellent conductivity and corrosion resistance.
• Wide applications – ideal for campervans, caravans, boats, ATVs, trailers, and off-grid systems.
⚙️ Functionality
This 40A flush-mount breaker is perfect for safeguarding auxiliary and accessory circuits across 12v–48v DC systems. It can be mounted on panels or firewalls, replacing traditional inline fuse holders. The manual reset button also functions as a kill switch, providing fast and reliable circuit isolation when needed.
🔌 Compatibility
• Works with 12v–48v DC setups
• Suitable for campervans, RVs, caravans, boats, and marine systems
• Ideal for winches, battery chargers, sound amplifiers, and auxiliary power circuits
🧰 Installation Difficulty
🟢 1/5 (Easy) – straightforward flush mount design, installs in minutes.
🔍 Features
• Manual reset push-button operation
• Flush / panel mount design
• 40A current rating
• Compatible with 12v–48v DC systems
• Copper internal components
• IP67 splash & dustproof housing
• Compact dimensions (76D × 48W × 36H mm)
📊 Specifications
| Specification | Detail |
|---|---|
| Current Rating | 40A |
| Voltage Range | 12v–48v DC |
| Type | Manual Reset Circuit Breaker |
| Mounting Type | Flush / Panel Mount |
| Ingress Protection | IP67 |
| Material | Copper Internals |
| Dimensions | 76D × 48W × 36H mm |
| Applications | Campervan, RV, Boat, Trailer, Truck, Off-grid systems |
📦 What’s Included
• 1 × 40A Flush Mount DC Circuit Breaker
• 1 × Protective Terminal Cover
For a premium option, shop here!
Premium circuit breakers
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.