Vehicle electrical safety and battery preservation made straightforward with a manual master cut-off switch for cars, boats and caravans. Owners fitting accessories or leaving a vehicle in storage can stop parasitic drain and lower risk of electrical faults. Is the Bolatus Battery Isolator Switch a simple, robust fit for everyday and marine use?
⚡ At a Glance
- • Switch Capacity: Suitable for 12–48V systems; 200A continuous, 455A intermittent, 1250A instantaneous
- • Best for: Owners of cars, boats, caravans and motorhomes needing a manual master disconnect
- • Not ideal for: Applications that require automatic charging isolation or automatic switching
High-current manual cut-off for 12–48V systems with clear on/off markings. Tin-plated copper core and ABS housing aim to reduce corrosion while keeping the switch simple to operate.
Safe power isolation – thanks to heavy-duty current ratings
High-current ratings are specified as 200A continuous, 455A intermittent and 1250A instantaneous at 12V, allowing the switch to handle surge loads and repeated switching. Two M10-compatible ring terminals accept robust cable terminations to maintain low-resistance connections.
Securely disconnect the battery to prevent parasitic drain, allow safe maintenance and reduce fire risk. The rating range suits a wide selection of vehicle electrical systems.
Durable electrical contacts – with a tin-plated red copper core
Tin plating on a solid red copper core improves oxidation resistance and helps maintain conductivity over time, while the ABS plastic housing resists environmental wear. The choice of materials reduces the pace of corrosion compared with bare copper.
Reliable contact life in road and marine conditions leads to fewer maintenance interventions. Expect consistent connection performance where corrosion could otherwise cause voltage drop or failure.
Easy fit and operation – with M10 terminals and colour-coded markings
Design includes two screw terminals sized for M10 ring terminals and clear green and red markings to indicate ON and OFF positions. Manual operation uses a simple rotary or flip action to open or close the circuit.
Fitting is straightforward for anyone comfortable with basic vehicle electrics, and colour-coded positions reduce wiring errors. Quick manual isolation speeds up servicing and storage procedures.
✨ The 4 Key Reasons for Bolatus Battery Isolator Switch
- Heavy-duty terminals – Secure M10 ring terminals for robust, low-resistance cable connections
- Corrosion-resistant core – Tin-plated copper prolongs contact life in damp environments
- Clear on/off markings – Colour-coded green and red positions reduce installation errors
- Manual master cut-off – Quickly isolate battery to prevent parasitic drain during storage
📋 Technical Details at a Glance
- Type: Battery isolator / master battery cut-off switch
- Voltage compatibility: 12–48V DC
- Continuous current rating: 200A DC (12V)
- Intermittent current rating: 455A DC (12V)
- Instantaneous current rating: 1250A DC (12V)
❓ Frequently Asked Questions
Q: Is the switch compatible with 24V systems?
A: Yes, the switch is suitable for systems from 12V up to 48V, so 24V systems are supported.
Q: Can the switch be used as an automatic isolator for dual-battery charging?
A: No, the switch is intended only to disconnect the power supply and does not provide automatic charging isolation or automatic switching.
Q: What terminal size and cable connections are required?
A: Two screw terminals accept M10 ring terminals (10mm); measure cable and ring sizes carefully before fitting.
🏆 Our Verdict
The Bolatus Battery Isolator Switch suits vehicle and marine owners who need a straightforward manual master disconnect for maintenance, storage and safety. Robust current capacity and corrosion-resistant contacts deliver dependable isolation with clear on/off markings. Straightforward fitting and durable materials make it a practical long-term choice for preventing parasitic drain and simplifying service work.
