PEC Low Profile JCase Fuse Link

The Low Profile JCase fuse is a female-terminal cartridge fuse built for high-current circuit protection, and this is the genuine PEC range. It performs like a fusible link — the type you’ll find protecting alternator, starter and main feed circuits — but is far easier to inspect and replace. The low-profile body reduces height for tight fuse boxes, and the slow-blow design with low voltage drop rides out inrush current without nuisance tripping. Rated to 58V, it suits 12V and 24V systems in 4WDs, caravans, trucks, camper and marine builds. Available here from 20A to 60A.

Key features

• Genuine PEC brand — quality cartridge fuse links for automotive and marine use.
• Low Profile JCase format — female-terminal cartridge fuse in a reduced-height body.
• 58V rated — suits both 12V and 24V DC systems.
• Slow-blow / time-delay with low voltage drop, designed to handle inrush currents.
• Fusible-link performance in an easy-to-replace cartridge.
• Colour-coded by rating for fast, at-a-glance identification.

Specifications

Amperage & colour guide

What it suits

Low Profile JCase fuse links protect higher-current circuits — alternator and main feeds, DC-DC chargers, inverters, winch and accessory runs — in 12V and 24V setups. Match the fuse rating to the cable and load it protects: the fuse is there to protect the cable, so size it to the cable’s safe current-carrying capacity and the circuit’s draw.

Built to spec. Made for the track.

══════════ FAQ (on-page) ══════════

Q: What is a Low Profile JCase fuse?
A: A Low Profile JCase fuse is a female-terminal cartridge fuse link for high-current circuit protection, in a reduced-height body. It performs like a fusible link but is far easier to inspect and replace, and is rated to 58V for 12V and 24V systems.

Q: Are these genuine PEC fuses?
A: Yes — these are genuine PEC brand Low Profile JCase fuse links, available in 20A, 25A, 30A, 40A, 50A and 60A.

Q: What do the colours mean?
A: The colour identifies the amp rating at a glance. In this range 20A is blue, 25A is clear/neutral, 30A is pink, 40A is green, 50A is red and 60A is yellow.

Q: What’s the difference between JCase and MCase fuses?
A: JCase fuses are larger, higher-current cartridge fuses rated to 58V, while MCase fuses are a smaller format rated to 32V. Use JCase for heavier feeds like alternator and main circuits, and MCase for lighter accessory circuits.

Q: Will these work in a 24V system?
A: Yes. Low Profile JCase fuses are rated to 58V DC, so they comfortably suit both 12V and 24V DC electrical systems.

Q: How do I choose the right rating?
A: Match the fuse rating to the cable and load it protects — the fuse should protect the cable, so it’s sized to the cable’s safe current-carrying capacity and the device’s draw.