Description
Blue Sea Systems m-Series Battery Switch Spare Locking Key – Red – 7903
The Blue Sea Systems m-Series Battery Switch Spare Locking Key – Red is designed for marine electrical switching and control.
- Replacement red locking key for compatible Blue Sea Systems m-Series battery switches
- Useful as a spare or replacement for installations using locking-key m-Series switches
- Product Type: Spare locking key
- Designed for marine electrical-distribution applications
- Supports reliable battery isolation, bank selection, or load management in marine DC systems
This switch is intended for properly engineered battery-management systems; confirm cable size, current rating, mounting arrangement, and system voltage before installation.
Specifications
- Color: Red
- Product Type: Spare locking key
- Manufacturer: Blue Sea Systems
- Part Number: 7903









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