OptiFuse 153 Series: High-Current DC Circuit Breakers for Marine and Automotive Use
When your system demands high current protection, especially in battery, marine, or heavy-duty DC applications, the OptiFuse 153 Series is built to handle severe fault conditions with reliability and safety in mind.
Highlights:
- Interrupt rating: 3,000 A @ 30 VDC (ABYC / marine compliant)
- Voltage range: Up to 42 VDC; stainless-stud variants (153-SS) rated 48 VDC
- Amperage options: 25 A – 200 A
- Rugged build: UL 94V-0 thermoset body, nickel/stainless studs, IP67 waterproof, SAE J1171 ignition-protected
- Manual reset: Resettable design reduces downtime vs. single-use fuses
Typical Applications:
- Marine power distribution (ignition-protected for engine compartments)
- Automotive and heavy-duty vehicle battery protection
- RV and off-grid battery systems
- Industrial DC equipment and backup power circuits
Mounting the 153
Designed with ¼ – 28 for surface mounting, ensuring secure, vibration-resistant terminations. This standard mounting style allows installers to use common heavy-gauge ring lugs, making it ideal for high-amperage applications.
Why Choose the 153 Series?
When a system calls for high current protection with reliability and serviceability, the 153 Series stands out. Unlike single-use fuses, it allows quick resetting after a fault. And unlike lower-grade breakers, it’s engineered to survive in demanding, high-fault environments.
For a deeper dive into when to choose fuses vs circuit breakers, check out OptiFuse’s comparison guide. To ensure you select the best protection for your application, see our Circuit Protective Device Selection Guide for complete context.
Sebastian Castañeda, Application Engineer at OptiFuse, supports customers with technical solutions, custom circuit protection design, and training. He provides tailored guidance and shares expert insights on the OptiFuse Blog.