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Blue Sea ST Blade Fuse Block – 12 Circuits with Negative Bus & Cover
The Blue Sea ST Blade Fuse Block – 12 Circuits with Negative Bus is a complete power distribution solution designed to consolidate branch circuits and in-line fuses into one organised system. Ideal for automotive, marine, caravan, and off-grid applications, it simplifies wiring while ensuring safe and efficient circuit protection.
Featuring both positive and negative bus bars, this fuse block allows clean and efficient wiring, reducing clutter and improving system reliability.
Key Features
- 12 independent fused circuits for organised distribution
- Integrated negative bus for simplified wiring
- Positive distribution bus with #10-32 stud
- Suitable for 24-hour circuits
- Clear insulating cover with push-button latch for easy access
- Cover meets ABYC/USCG insulation requirements
- Includes storage for two spare fuses
- Label recess with 20 write-on circuit labels included
- Tin-plated copper buses and fuse clips for corrosion resistance
- Accepts ATO® and ATC® blade fuses
- Compatible with ring or spade terminals
Specifications
- Circuits: 12
- Maximum Current: 30 A per circuit
- Maximum Current (Block): 100 A
- Maximum Voltage: 32 V DC
- Mounting: #8 screw (M4)
- Negative Bus: #10-32 stud
- Positive Bus: #10-32 stud
- Recommended Torque: 2.71 Nm
- Terminal Type: #8-32 with captive star lock washer
- Weight: 0.34 kg
Additional Notes
- Fuses sold separately
- Supports ATO® and ATC® fast-acting blade fuses
- Designed for clean, safe, and efficient DC power distribution
The Blue Sea 12 Circuit Fuse Block with Negative Bus is a preferred solution for managing multiple circuits, offering reliability, safety, and ease of installation.

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