The Victron Energy MEGA-fuse 100A/80V, part number CIP138100020, is a high-current DC fuse designed to protect compatible battery cables, distribution circuits, and electrical equipment from excessive current. Rated for 100A with an 80V maximum voltage rating, this MEGA-format fuse is well suited to RV, marine, van, overland, off-grid, backup-power, and other DC electrical systems where dependable overcurrent protection is required.
This listing includes a package of five 100A MEGA fuses, providing multiple replacement fuses for new installations, service inventories, or systems with several appropriately sized fused circuits. MEGA fuses are available in multiple current and voltage ratings, allowing installers to select the appropriate level of protection for the cable size, connected equipment, and overall electrical system design.
Best For
- RV and camper van battery systems
- Marine DC electrical installations
- Off-grid solar and battery systems
- DC distribution panels and busbar systems
- Battery-to-equipment circuit protection
- Inverter, charger, and DC accessory circuits when a 100A fuse is specified
- Commercial vehicle and mobile-power installations
- Replacement fuse inventory for service and maintenance
Core Functions
- 100A Fuse Rating: Provides 100A overcurrent protection for compatible DC circuits.
- 80V DC Maximum Rating: Suitable for DC systems operating up to 80V.
- MEGA Fuse Format: Bolt-down design for compatible MEGA fuse holders and high-current DC distribution.
- 5-Pack: Includes five 100A/80V MEGA fuses.
Need Help Choosing the Right Victron Components?
Building a reliable mobile power system is about more than choosing individual parts. Battery capacity, inverter sizing, charging sources, AC distribution, monitoring, and future expansion all need to work together.
If you are comparing Victron products or planning a larger RV, van, marine, overland, or off-grid power system, schedule a no-risk consultation with the MobileMustHave team. We can help you home in on the right products for your system goals before you buy.
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With MobileMustHave, you get more than access to professional-grade Victron power products. You get a partner who can help you choose the right components, understand how they work together, and build a power system around the way you actually travel.
For customers who know exactly what they need, MMH makes it easy with in-stock products, ultra-fast shipping, easy returns, and competitive pricing. For customers who want more guidance, we can help with curated power bundles, system planning, remote commissioning, onsite installation options, remote monitoring support, and access to a nationwide support network.
Whether you are making a simple upgrade or planning a complete off-grid power system, MobileMustHave gives you as much or as little help as you need — before, during, and after the sale.





