ORDER BY 3PM FOR DISPATCH TODAY*
350A 12V-48V High Current Battery Isolating Switch
350A 12V-48V High Current Battery Isolating Switch
SKU:sw-iso-350
Out of stock
BUNDLE & SAVE
350A 12V-48V High Current Battery Isolating Switch
📝 350A Red On/Off Battery Switch
The 350A High Current Battery Isolating Switch is a heavy-duty safety device designed to disconnect power in campervans, caravans, RVs, 4WDs, boats, and off-grid electrical systems. Engineered for reliability with a rugged rotary actuator and IP66 weather protection, it provides safe isolation for high-current circuits up to 48V. Ideal for lithium, AGM, and dual-battery setups, it delivers dependable performance for both DIY and professional installations.
⭐ Essential Benefits
• 350a continuous rating – handles high-demand electrical systems with ease.
• Ip66 weather resistance – protects against dust, spray, and harsh conditions.
• Red rotary on/off actuator – simple, fast battery isolation.
• Prevents electrical drain – safely disconnects batteries during storage or maintenance.
• Flexible mounting options – suits panel mount or surface mount installations.
⚙️ Functionality
The isolator installs into your electrical system as a master disconnect switch. By rotating the actuator, you can instantly cut power to your vehicle’s auxiliary or house battery system, protecting wiring, accessories, and onboard electronics. Rated for up to 350A continuous and 600A for 30 seconds, it is designed to handle large inverter loads, DC chargers, distribution systems, and lithium battery banks.
🔌 Compatibility
• Works with 12v–48v dc systems
• Suitable for lithium, agm, wet, gel, and calcium batteries
• Ideal for caravans, campervans, rvs, 4wds, boats, and off-grid setups
• Compatible with high-current circuits such as inverters, dcdc chargers, dc distribution, and battery banks
🧰 Installation Difficulty
🟡 3/5 (Moderate)
Requires correct cable sizing, secure mounting, and proper termination of high-current lugs (M10 posts). Recommended for confident DIY installers or professionals.
🔍 Features
• Operation mode – simple on/off rotary isolator.
• High current handling – 350a continuous, 600a peak for 30 seconds.
• Protection – ip66 rating for water and dust resistance.
• Actuator – heavy-duty red rotary knob.
• Mounting – surface or panel installation.
• Terminals – m10 (3/8") heavy-duty studs.
📊 Specifications
| Specification | Value |
|---|---|
| Operation mode | ON–OFF |
| Maximum operating voltage | 48V |
| Continuous current rating | 350A |
| Peak current (30s) | 600A |
| Item dimensions | 98 × 98 × 80mm |
| Terminal size | M10 (3/8”) |
| Actuator type | Rotary |
| IP rating | IP66 |
| Number of positions | 2 |
📦 What’s Included
• 1 × 350a 12v–48v high current battery isolating switch
🙌 Why Choose This Product?
This isolator provides reliable, high-current switching in demanding off-grid environments. With rugged construction, m10 terminals, and full ip66 weather protection, it is ideal for safeguarding lithium battery banks, inverters, and large 12v–48v systems. A dependable choice for serious touring builds, marine setups, and professional installations.
🚀 Our Promise
Order today for same-day dispatch and upgrade your electrical system with dependable high-current isolation for safer, more efficient power management.

check_circle
Tested for Reliability
All products are tested in real Aussie off-grid conditions before we stock them.
check_circle
Fast Dispatch
Order before 3 PM AEST for same-day shipping from Geelong, VIC.
check_circle
Quality Over Price
We only stock products we’d use ourselves—even if they cost a bit more.
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.


















