Blue Sea Systems 5502 Class T Fuse Blocks, 320A — High-Speed Short-Circuit Protection

Overview

Blue Sea Systems 5502 Class T Fuse Blocks provide fast-acting protection for high-demand DC circuits, a preferred choice for many inverter setups. Designed for Class T fuses rated from 225 to 400 A, this block helps deliver a prompt response when faults arise while keeping the electrical path organized and protected.

Key benefits

• High-speed response to short circuits helps safeguard critical components
• Clear insulating cover supports ABYC/USCG compliance and quick inspection
• Suitable for systems up to 160 Volts DC
• Large 3/8-inch-16 stud terminals accept ring terminals for wire up to 4/0 AWG
• Large heat-dissipating tin-plated copper mounting blocks for reliable mounting

Specifications at a glance

• Fuses sold separately, keeping the block compatible with your preferred fuse type
• Recommended for Class T fuses in demanding power setups
• Durable construction designed to withstand vibration in marine and mobile environments

Real-world use scenarios

In a boat's main inverter installation, this fuse block sits between batteries and the inverter, providing fast fault isolation while allowing for easy wire routing. For off-grid RV or cabin systems, it helps keep power pathways clear, with a transparent cover that makes it simple to verify fuse status during routine checks.