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We think you mean: Blue Sea Systems 5191 MRBF Terminal Fuse Block.

This looks like a model or part number. Exact identity is prioritized before similar products.

We understood this as SYSTEMS-5191. The closest reviewed result is Blue Sea Systems 5191 MRBF Terminal Fuse Block.
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Blue Sea Systems 5191 MRBF Terminal Fuse Block

The model or part identity matches your search.

Battery-terminal MRBF fuse holder rated up to 58 VDC and 300 A; the fuse is sold separately and determines circuit protection.

Bos Component Type
terminal_fuse_holder
Bos Enclosure Only
Yes
Bos Fuse Family
MRBF terminal fuse, 30-300 A
No verified US buying route yet
SEE VERIFIED DETAILS →
Evidence reviewed: 2026-09-18 · Part 5191
Comparable modelcurrent

Blue Sea Systems 5045 ST Blade Compact 4-Circuit Fuse Block

This is a reviewed alternative from the same equipment family. Compare capacity, output and connections before choosing it.

Four-position ATO/ATC fuse block rated 32 VDC, 100 A per block and 30 A per circuit; fuses are sold separately.

Bos Dc Voltage Rating V
32 V
Bos Circuit Count
4 circuits
Bos Component Type
branch_fuse_block
No verified US buying route yet
SEE VERIFIED DETAILS →
Evidence reviewed: 2026-09-18 · Part 5045
Comparable modelcurrent

Blue Sea Systems 5502 Class T Fuse Block

This is a reviewed alternative from the same equipment family. Compare capacity, output and connections before choosing it.

Covered Class T fuse holder for 225-400 A fuses, rated up to 160 VDC and 400 A; the fuse is sold separately.

Bos Component Type
class_t_fuse_holder
Bos Enclosure Only
Yes
Bos Fuse Family
Class T, 225-400 A
No verified US buying route yet
SEE VERIFIED DETAILS →
Evidence reviewed: 2026-09-18 · Part 5502
Comparable modelcurrent

Blue Sea Systems 7725 SafetyHub 100 Fuse Block

This is a reviewed alternative from the same equipment family. Compare capacity, output and connections before choosing it.

Seven-circuit sealed fuse block combining three MIDI/AMI and four ATO/ATC positions, with a 280 A combined maximum only when using 4/0 AWG or 120 mm² input conductors; current manufacturer voltage documents conflict.

Bos Device Capacity
3 MIDI/AMI positions: available fuses 30-200 A, block maximum 240 A, per-circuit maximum 170 A; 4 ATO/ATC positions: fuses 1-20 A, block maximum 50 A, per-circuit maximum 20 A
Bos Circuit Count
7 circuits
Bos Component Type
mixed_dc_fuse_block
No verified US buying route yet
SEE VERIFIED DETAILS →OFFICIAL MANUAL
Evidence reviewed: 2026-09-18 · Part 7725
Comparable modelcurrent

Blue Sea Systems 6006 m-Series Mini On-Off Battery Switch

This is a reviewed alternative from the same equipment family. Compare capacity, output and connections before choosing it.

Single-circuit battery switch rated to carry 300 A continuously at up to 48 VDC, with separately documented short-term, starting and switching limits.

Bos Dc Voltage Rating V
48 V
Bos Component Type
battery_disconnect_switch
Bos Environment Rating
IP66
No verified US buying route yet
SEE VERIFIED DETAILS →OFFICIAL MANUAL
Evidence reviewed: 2026-09-18 · Part 6006
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