Sierra FS46630 Dual Bus Bar — 12-Gang 150A Marine Electrical Distribution

Sierra FS46630 Dual Bus Bar — 12-Gang, 150 Amp

The Sierra FS46630 is a heavy-duty dual bus bar designed for centralizing 12V DC power distribution on boats with larger electrical loads. With 12 gang terminals rated at 150 amps total, this bus bar handles the demands of a fully equipped helm — from navigation electronics and lighting to bilge pumps, accessories, and more. The dual-bar design provides separate positive and negative distribution points in a single compact unit, keeping your wiring organized and your panel clean.

Built to marine standards, the FS46630 is a step up from basic bus bars when you need higher ampacity and more connection points in one assembly. It's a solid foundation for any serious panel build or electrical refit.

Part Details

• Brand: Sierra
• Part Number: FS46630
• SKU: 11-FS46630
• Type: Dual Bus Bar (positive + negative in one unit)
• Terminals: 12-gang (12 connection points total)
• Ampacity: 150 Amps
• Barcode: 808282381844

Compatible Applications

• 12V DC marine electrical panel distribution on powerboats and sailboats
• Helm station wiring consolidation — positive and negative bus in one assembly
• High-load accessory circuits: navigation electronics, lighting, bilge pumps, windlasses
• Electrical refit and panel upgrade projects requiring 12+ circuit distribution
• Any marine application requiring a 150A-rated dual bus bar

Key Features

• 12-gang dual bus bar — positive and negative distribution in a single unit
• 150A total rating — handles high-load marine electrical systems
• Compact dual-bar design reduces panel space and wiring complexity
• Marine-grade construction for corrosion resistance in humid environments
• Clean, professional appearance for finished panel installations

Related Products

• Sea-Dog Bus Bar with Cover — 4 Terminals — covered 4-terminal bus bar for smaller circuit groups
• Sea-Dog Bus Bar with Cover — 6 Terminals — covered 6-terminal option
• Sea-Dog Dual Bus Bar with Cover — 12 Terminals — covered dual bus bar alternative
• Sea-Dog Stud Terminal Bus Bar — 100A — high-current stud terminal bus for main feeds
• Sierra 408 Series Fuse Block with Bus Bar — 6-Gang — fused distribution block for protected circuits
• Sierra 408 Series Fuse Block with Bus Bar — 12-Gang — 12-gang fused block for fully protected panel builds

Parts Desk Insights

The FS46630 is the right choice when you're building or refitting a helm panel that needs both positive and negative distribution in one tidy assembly. The 12-gang, 150A rating gives you enough capacity for a fully loaded boat — electronics, lighting, pumps, and accessories — without needing separate positive and negative bars mounted in different locations. The dual-bar format is especially useful in tight helm spaces where you want to minimize the footprint of your distribution hardware. If your circuits need individual fuse protection at the bus, pair this with a fuse block on the positive side rather than running everything off a single upstream fuse.