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⚓ Command your power with confidence — the ultimate battery switch for pros who won’t settle.
The Blue Sea Systems 350 Amp E-Series Battery Switch is a high-performance, ignition-protected marine switch designed for single circuit ON-OFF control. Rated for 350 amps continuous current and up to 48V DC, it features IP66 waterproofing and meets ISO 8846 and ABYC safety standards. Its push-button actuator and durable copper/brass contacts ensure reliable operation in demanding marine environments, making it a trusted choice for professional boaters.





| ASIN | B000FOW1C6 |
| Actuator Type | Push Button |
| Batteries Included | No |
| Brand | Blue Sea Systems |
| Circuit Type | 1-way |
| Colour | Red |
| Compatible with | Boat electrical systems, alternators, batteries, and other marine electrical loads |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Screw Terminals |
| Contact Material | Copper, Brass |
| Contact Type | Normally Open |
| Control Method | Push Button |
| Controller Type | Ring |
| Country of Origin | USA |
| Current Rating | 350 Amps |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,240) |
| Date First Available | 6 August 2012 |
| Generic Name | Blue Sea Systems - 9004e Battery Switch ON/Off AFD, Red |
| Global Trade Identification Number | 00632085900458 |
| Height | 5 Inches |
| Included Components | Blue Sea Systems - 9004e Battery Switch ON/Off AFD, Red |
| International Protection Rating | IP66 |
| Item Dimensions LxWxH | 25.4 x 17.8 x 12.7 Centimeters |
| Item Weight | 408 g |
| Item dimensions L x W x H | 25.4 x 17.8 x 12.7 Centimeters |
| Length | 10 Inches |
| Lower Temperature Rating | 40 Degrees Celsius |
| Manufacturer | Blue Sea Systems |
| Material Type | Plastic |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Positions | 2 |
| Operating Voltage | 48 Volts (DC) |
| Operation Mode | Off,On-off |
| Shape | As Shown |
| Size | No Size |
| Style | On-off W/Afd |
| Terminal | Plug In, Clamp, Crimp |
| Upper Temperature Rating | 85 Degrees Celsius |
| Usage | personal |
| Weight | 0.9 Pounds |
| Width | 7 Inches |
S**O
Missing nut :(
V**L
Prodotto di qualitÃ
A**N
Quality you can feel. Note: Not the same mounting holes pattern that the older version.
F**S
Correspond à mes attentes
T**N
Used these on the solar system in my travel trailer. Works great to isolate and test / charge batteries individually.
Trustpilot
1 month ago
3 days ago