APT Micro2 Blade Fuses: Tiny Footprint, 48VDC Ready
Modern vehicles, RVs, carts, and compact equipment are squeezing in more electronics while moving to higher-voltage DC rails. APT (Micro2) blade fuses are the smallest blade style, letting you protect more circuits in less space, without giving up much voltage headroom.
Series Specifications at a Glance:
- Style: Micro2 blade
- Range: 5-30A
- Voltage: 48 VDC
- Interrupt Rating: 1kA @ 48 VDC
Where APT Fits Best
- Space-constrained DC harnesses and RV branch circuits
- Vehicle modules, lighting, pumps, fans, and accessories in 12V/24/36/48 V systems
- Electric golf carts and other 36-48VDC platforms needing compact protection
Selecting Your APT (Amps & Colors)
5A
7.5A
10A
15A
20A
25A
30A
Tan
Brown
Red
Blue
Yellow
Clear/White
Green
APT-5A
APT-7.5A
APT-10A
APT-15A
APT-20A
APT-25A
APT-30A
Sizing tip: pick the fuse rating based on wire ampacity and the circuit’s continuous current, then confirm the 48 V DC / 1kA ratings meet your system requirements.
Mounting Accessories
- Add-A-Circuit (Micro2): OptiFuse LPT-08 lets you add protected accessory circuits when panel space is tight.
- PCB fuse clips (Micro2): CNT-04 and CNT-06 for board-level designs or compact assemblies.
- Browse additional fuse holders & blocks to match your environment and service needs: LPT-04, or LPT-08
Typical Use Cases
- RV & camper 12-48 V DC branches (lighting, fans, pumps, USB/aux)
- Vehicle upfit harnesses and aftermarket accessories
- Electric golf carts and low-speed EVs (36-48 V)
Sebastian Castañeda is a circuit protection specialist and technical writer with application-focused experience in technical support and custom protection design. He contributes practical, application-driven insights to the OptiFuse Blog.