Ignitions and Electrical› Charging Systems
BLUE SEA
SWITCH BATTERY M ON/OFF W/KEY BLK
SKU: B03C 6005200-BSS
Easy — 1–2 hours
Description
MIA's Description
Constructed with tin-plated copper studs for conductivity and corrosion resistance, this switch includes a removable key and an isolating cover with snap-on sections. It allows for surface, rear, or front panel mounting options and is waterproof, rated IP66. The switch is also ignition protected, making it safe for gasoline-powered boats.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | BLUE SEA |
| Part Number | B03C 6005200-BSS |
Videos
The Best Battery Switch for Van & RV Power Systems (Blue Sea Systems 9003e vs BEP Pro 770-EZ)
Blue Sea Systems | ML-ACR Managed Battery Switch – Complete Power Control
Blue Sea System Battery Switch ACR - Portland Marine Electronics
Installing a Blue Sea Systems Battery Switch
Blue Sea Systems m-Series Mini Battery Switches
Blue Sea Systems 350A Compact Battery Switch
Blue Sea 7611 ACR
Blue Sea 7622 Automatic Charging Relay Walkthrough
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy