Marine Battery Switch 100A Square Isolator 12V 24V Boat Kill Disconnect Switch
MD1133
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Marine Battery Switch 100A
Isolator & Change-over Switch for Dual Battery Systems
This heavy-duty marine grade battery switch works as both an isolator and a change-over switch. It can be used in dual battery systems, switching either battery or both batteries at the same time. Rated at 100 Amps continuous duty at 12V, it suits small to mid-sized craft and helps preserve battery charge when the system is not in use.
Key Features
- ✔ Battery isolator and change-over switch
- ✔ Switches either or both batteries in dual battery systems
- ✔ 100A continuous duty at 12V
- ✔ Surface mounting
Technical Specs
| Continuous Rating | 100 Amps at 12V |
| Function | Isolator / change-over (either or both batteries) |
| Material | ABS, non-corrosive marine grade metals |
| Colour | Red with black knob |
| Dimensions | 127.5mm diameter x 50.8mm height |
| Mounting | Surface mount |
Compatibility / Fitment Guide
| System Type | Application | Rating |
|---|---|---|
| Marine | Outboards, Speedboats, Fishing Boats | 100A continuous at 12V |
| Dual Battery Systems | Start and house battery banks | Either or both batteries |
OEM Cross Reference
| 4Boats SKU | MD1133 |
Questions & Answers
Is this a genuine original part?
This is a quality aftermarket battery switch, not a branded original-equipment part.
How do I know if it is compatible?
Check you have room for a round 127.5mm diameter, 50.8mm high surface-mounted switch, and that your continuous load is within 100A at 12V.
Can it handle two batteries?
Yes. It is a change-over switch for dual battery systems and can switch either battery or both at the same time.
Note: Distributed by 4boats.co.uk. Please verify your mounting space and current requirements before purchasing.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.