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AAA 100A 12V Battery Switch with Removable Key – Heavy-Duty Marine & RV Power Isolation
Professional-grade marine product — trusted by boaters across the UK.
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The AAA 100A 12V Battery Switch with Removable Key is a robust, professional-grade solution for isolating batteries in boats, caravans, and RVs. Designed for continuous 100A loads and short-term surges of up to 500A, it ensures safe power management. The removable key provides...
The AAA 100A 12V Battery Switch with Removable Key is a robust, professional-grade solution for isolating batteries in boats, caravans, and RVs. Designed for continuous 100A loads and short-term surges of up to 500A, it ensures safe power management. The removable key provides secure operation, preventing accidental or unauthorised use, while the compact design allows easy installation in a variety of 12V electrical systems.
Product Description
The AAA Battery Switch with Removable Key (100A, 12V) is engineered to provide complete control over your battery power, offering a reliable way to isolate circuits during maintenance, long-term storage, or emergency situations. Its rugged design is suited to the harsh conditions encountered in marine and RV environments.
This switch supports a continuous load of 100A and can handle short-term surges of up to 500A for 10 seconds, making it ideal for starting motors, powering high-demand devices, or controlling auxiliary systems. The removable key allows the user to safely disconnect the battery, preventing drain or unauthorised access.
Installation is straightforward thanks to the 10mm stud connections, which are compatible with standard 12V battery cables. Compact dimensions—60mm base diameter and 110mm height—allow fitting in tight spaces while maintaining easy access for operation. The switch replaces the older VS-053 model, offering an updated, high-performance solution for power isolation.
This battery switch is perfect for boat owners, RV enthusiasts, and anyone needing a reliable, easy-to-use method for controlling battery power. By using the AAA 100A Battery Switch, you protect your battery, prevent accidental discharges, and ensure the safety and efficiency of your onboard electrical system.
Specifications
| Specification | Details |
|---|---|
| Brand | AAA |
| Model / Part Number | 100A 12V |
| Type | Battery Switch with Removable Key |
| Voltage | Max. 24V DC |
| Current Rating | 100A continuous, 500A surge (10 seconds) |
| Connection Type | 10mm studs |
| Base Diameter | 60mm |
| Height | 110mm (4.3") |
| Length | 120mm |
| Width | 102mm (4") |
| Replacement For | VS-053 |
| Key Feature | Removable key for secure battery isolation |
| Applications | Marine, caravans, RVs, 12V electrical systems |
| Safety Features | Prevents accidental discharge, overload protection |
| Construction | Heavy-duty, durable materials suitable for harsh conditions |
| Warranty | 1-year limited manufacturer’s warranty |
Why buy from Marine Chandlery?
- UK marine specialists, based in North Shields
- Next-day UK delivery available
- Same-day collection from our store
- Expert advice before and after purchase
- Carefully selected marine-grade products
- Secure checkout & trusted payment options










