Blue Sea Systems 5032 ST Blade Fuse Block – Dual 12, Ground, Cover, 100 Amps

The Blue Sea Systems 5032 ST Blade Fuse Block is a compact, protected distribution solution designed to organize and guard circuits in tight spaces. Fuse blocks provide targeted protection to wiring and help mitigate the risk of damage from overloads or short circuits. Built for marine and demanding environments, this unit is ideal when a panel has run out of breakers or when you need to extend power to multiple loads from a single source.

Smart, space-saving design

This block delivers two isolated banks of six ATO/ATC fuse slots, allowing up to 12 circuits to be fed from one source or from two isolated batteries. The integrated ground connection supports a safer setup for mixed loads, whether you run continuous 24‑hour circuits or switched profiles.

• Dual six-circuit groups with a dedicated ground for mixed switched and 24-hour circuits
• Accepts ATO/ATC fuses from 1 A to 40 A with configurable protection
• Screw terminals for secure wire connections, compatible with ring terminals
• Cover meets ABYC/USCG insulation requirements and features a push-button latch for easy fuse access
• Storage for two spare fuses and label recesses for Blue Sea Systems labels

What you can connect and how it works

You can feed the unit from a single breaker at your distribution panel and distribute power to up to 12 circuits. It supports a mix of 24-hour and switched loads and can be configured for two isolated batteries or a single battery setup.

• Two isolated groups of six fuse slots optimize organization
• Compact footprint suitable for panel gaps and near load centers

Specifications and practical notes

The block is rated for 100 Amps total and is designed for installations where space is at a premium. Wires terminate at screw terminals, and the hinged cover provides quick access while shielding fuses from dust and moisture in exposed environments.

In everyday use, this fuse block supports a modular approach to power distribution. A single feed from the distribution panel can power nearby systems, with spare fuses safely stored behind the cover for quick maintenance.