

🔋 Power your adventures with confidence—switch smart, live fearless!
The Blue Sea Systems BS9003E Battery Switch Series e is a high-performance, marine-grade battery switch designed for professional-grade reliability. Rated for 350 Amps continuous current, it features durable one-piece tinned copper terminals and advanced AFD technology for safe switching under load. With IP66 protection and compliance with key marine safety standards, it’s the trusted choice for demanding petrol and diesel engine applications, ensuring both safety and convenience in one sleek, easy-to-install package.


| ASIN | B000MMC914 |
| Actuator Type | Push Button |
| Best Sellers Rank | 123,744 in Automotive ( See Top 100 in Automotive ) 10 in Boat Battery Switches 356 in Car Battery Switches |
| Brand | Blue Sea Systems |
| Circuit Type | 1-way |
| Colour | Multi-coloured |
| Connectivity Protocol | X-10 |
| Connector Type | IDC |
| Connector type | IDC |
| Contact Material | Metal |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | Touch |
| Controller Type | Ring |
| Country Of Origin | USA |
| Current Rating | 350 Amps |
| Current rating | 350 Amps |
| Customer Reviews | 5.0 out of 5 stars 9 Reviews |
| Global Trade Identification Number | 00632085900359 |
| Included Components | Components included in the description |
| International Protection Rating | IP66 |
| Item Dimensions | 7.4 x 16.2 x 21.9 centimetres |
| Item Type Name | Switch battery series e on/off |
| Item Weight | 0.59 Kilograms |
| Manufacturer | Blue Sea Systems |
| Material | Plastic |
| Model Number | 9003e |
| Mounting Type | Flush-mounted or surface mounted |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operating Voltage | 48 Volts |
| Operating voltage | 48 Volts |
| Operation Mode | ON-OFF |
| Operation mode | ON-OFF |
| Specification Met | ABYC, ISO 8846, IP66 |
| Switch Type | Push Button |
| Terminal | Stud |
| UPC | 632085900359 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 1 Degrees Fahrenheit |
| Wattage | 16800 watts |
O**O
Buy this, not the cheap Chinese switches. Safety is worth the price.
Bought this for our self built camper to replace one of the cheap power switches that are all too common on Amazon. The old one was getting extremely hot even though it was operating well below its rates current, hot enough that what alerted us to it was the smell, it had only been installed for a couple of days. You get what you pay for, the quality of this switch is great, handles higher currents than the last one without even getting warm. I'm confident this one is actually rated for the current it states. Easy to install, works great. The old one was dangerous. Don't buy the the cheap Chinese ones, they're dangerous & a false economy. Spend the money, buy one of these. It's not worth the risk of an electrical fire. We've been living in our van full time for a year & a half & we've never had an issue with this switch with it regularly handling 165A when running an air fryer on our 12V leisure battery.
C**Y
Best battery switch for your boat with big engines
Very well made and easy to fit and sturdy when in place and reassuring to use compared to the usual red key switches normally fitted
Trustpilot
1 month ago
1 day ago