FD400-1000
400A 1000VDC fuse for EV and energy storage with 100kA breaking capacity. Ideal for industrial and consumer applications with excellent performance and reliability.
Product Overview
Description
The FD400-1000 is a high-performance DC fuse designed for electric vehicle and energy storage applications.
With 1000VDC rating and 400A continuous current, this fuse provides reliable protection for high-voltage battery systems.
The 100kA breaking capacity ensures safe interruption of severe DC fault currents.
Product Series
FD
Primary Application
EV battery pack protection
Key Features
- 1000VDC rating for high-voltage applications
- 100kA breaking capacity for battery protection
- Specialized DC arc quenching technology
- Compact bolt-on mounting
- Wide temperature range for automotive use
- UL and IEC recognized
Specifications
| Voltage Rating | 1000V DC |
|---|---|
| Current Rating | 400A |
| Breaking Capacity | 100kA @ 1000V DC |
| Size | Size 3 (76mm) |
| Mounting | Bolt-on M10 terminals |
| Operating Temperature | -40°C to +125°C |
| Time-Current | Fast-acting |
| Standards | IEC 60269-6, UL 248-13 |
Applications
EV battery pack protection
Battery and charging management
Energy storage systems
Renewable energy systems
DC fast charging stations
Battery and charging management
Battery module protection
Battery and charging management
DC distribution systems
Electronic system design
FAE Expert Insights
"The FD series is my go-to recommendation for DC applications. The specialized DC arc quenching is critical - I've seen AC fuses fail spectacularly on DC circuits. For EV applications, the 1000V rating handles 800V nominal systems with margin. Breaking capacity is crucial for battery protection - large battery packs can deliver 50-100kA fault currents. I always verify the fuse DC rating matches the application - some fuses have different AC and DC ratings. For installation, proper torque is essential - 25-30 Nm for M10 terminals."
Reliable DC protection with specialized arc quenching for EV and energy storage
— Steven Liu, BeiLuo
Frequently Asked Questions
Can I use this fuse for AC applications?
While DC fuses can typically be used for AC, the reverse is not true. The FD400-1000 is rated for 1000V DC but may have a higher AC rating (typically 690V AC). Check the datasheet for specific AC ratings. For mixed AC/DC applications, verify both ratings are adequate.
Check datasheet for AC rating if needed. DC fuses generally work for AC but AC fuses cannot be used for DC.