Victron Energy MEGA fuse 400A - rated up to 80V
Victron Energy MEGA fuse 400A - rated up to 80V
SKU:VMG400-80
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Victron Energy MEGA Fuse
400A | 80V DC | M8 Bolt-Down Terminals
The Victron Energy MEGA Fuse 400A/80V (SKU: VMG400-80) is a high-quality DC fuse engineered to deliver robust over-current protection for demanding electrical systems. Rated at 400 amps and compatible with DC system voltages up to 80V, it is an essential component for safeguarding valuable equipment in various applications.
Designed to interrupt circuits swiftly in the event of short circuits, equipment faults, or overloads, this MEGA fuse helps prevent damage to sensitive components and reduces the risk of system failure or fire. Its reliable performance makes it suitable for automotive, marine, off-grid, and industrial power systems.
SYSTEM PROTECTION: Essential over-current safeguard for high-amperage DC circuits up to 80V.
Key Features
| ▶ High Current Rating (400A) — Provides robust protection for demanding DC power systems. |
| ▶ Wide Voltage Compatibility (Up to 80V DC) — Suitable for 12V, 24V, 48V, and higher voltage installations. |
| ▶ Robust M8 Bolt-Down Design — Ensures secure, vibration-resistant connections for critical circuits. |
| ▶ Low Voltage Drop (80 mV) — Maximises system efficiency by reducing energy loss and heat generation. |
| ▶ Genuine Victron Energy Quality — Manufactured to high standards for dependable performance in challenging environments. |
Technical Specifications
| Parameter | Value |
|---|---|
| Current Rating | 400 A |
| Voltage Rating | 80 V DC |
| Fuse Type | MEGA (AMG) |
| Terminal Size | M8 (5/16") |
| Centre-to-Centre Hole Distance | 50.8 mm |
| Overall Length | 68.8 mm |
| Total Width | 19 mm |
| Cold Resistance | 0.128 mΩ |
| Approximate Voltage Drop | 80 mV |
| Mounting Type | Bolt-on |
| Weight | 10 g |
Typical Applications
| Solar & Off-Grid Systems | Protection for solar charge controllers, inverters, and battery banks. |
| Automotive & Marine | Safeguarding high-current DC circuits in vehicles, boats, and RVs. |
| Battery Distribution | Between battery banks and DC loads or charging systems. |
| Industrial & Commercial | Reliable circuit protection in various industrial and commercial DC power installations. |
Built-In Protection Functions
The Victron Energy MEGA fuse is designed to provide critical over-current protection, safeguarding your electrical system against potentially damaging conditions. It offers reliable protection against short circuits • overloads • equipment faults. Victron Energy products, including MEGA fuses and fuse holders, conform to relevant European Union directives such as EMC 2014/30/EU, Low Voltage Directive 2014/35/EU, and RoHS 2011/65/EU, ensuring compliance with safety and environmental standards.
Common Questions
What is a Victron Energy MEGA fuse?
A Victron Energy MEGA fuse is a high-quality, bolt-down DC fuse specifically designed to provide reliable over-current protection for high-amperage electrical systems, such as those found in solar, marine, and automotive applications, rated up to 80V DC.
How do I select the correct fuse rating?
To select the correct fuse rating, choose a value that is slightly higher than your maximum expected continuous operating current, but lower than the maximum current rating of the component or cable you are protecting. Always consult your system's specifications and relevant electrical codes.
What systems is this 400A/80V fuse suitable for?
This 400A/80V MEGA fuse is ideal for large 12V, 24V, 48V, and other DC systems up to 80V. Common applications include protecting main battery circuits, high-power inverters, charge controllers, and DC distribution systems in off-grid solar setups, marine vessels, and heavy-duty automotive applications.
Is a fuse holder required for installation?
Yes, a compatible MEGA fuse holder is absolutely essential for safe and proper installation of this fuse. The bolt-down design requires a dedicated fuse holder to ensure secure electrical contact and system integrity.
Installation Notes
- Installation should be performed by a qualified professional to ensure safety and compliance with local electrical regulations.
- Always use a compatible MEGA fuse holder designed for the appropriate voltage and current rating.
- Ensure all connections are clean, tight, and secure to prevent overheating and ensure optimal performance.
- Verify correct polarity before energising the system.
Before You Buy
- Verify your system's maximum operating current and voltage to ensure this 400A/80V fuse is correctly rated for your application.
- Confirm you have a compatible MEGA fuse holder, or purchase one separately, as this fuse requires a specific bolt-down holder.
- Consult your system's wiring diagrams or a qualified electrician if you are unsure about fuse sizing or installation requirements.
Always verify product specifications and compatibility with your specific system requirements before purchase and installation. E&OE.
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