Bussmann EV Fuses | BeiLuo Distributor

About EV Fuses

Bussmann EV fuses provide specialized high-voltage DC protection for electric vehicles, charging infrastructure, and battery systems. These fuses are designed for 500V-1000VDC applications with breaking capacities up to 100kA and AEC-Q200 qualification.

As an authorized distributor of Bussmann, BeiLuo provides a comprehensive range of EV Fuses products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right EV Fuses

Product List

4 products available

Part Number ↕	Voltage Rating ↕	Current Rating ↕	Breaking Capacity ↕	Size ↕	Mounting ↕	Package ↕	Stock Status	Action
EV100-500-1	1000V DC	500A	50kA @ 1000V DC	Special EV package	Bolt-on M10	-	In Stock	View Details
EV100-400-1	1000V DC	400A	50kA @ 1000V DC	Special EV package	Bolt-on M10	-	In Stock	View Details
EV100-300-1	1000V DC	300A	50kA @ 1000V DC	Special EV package	Bolt-on M8	-	In Stock	View Details
EV100-600-1	1000V DC	600A	50kA @ 1000V DC	Special EV package	Bolt-on M10	-	In Stock	View Details

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Frequently Asked Questions

What voltage is needed for EV battery fuses?

EV battery fuse voltage depends on system voltage: 500V systems use 500V fuses, 800V systems use 1000V fuses. Always select rating 20% above nominal DC voltage. For 400V systems, use 500V fuses. For 800V systems, use 1000V fuses.

Select voltage 20% above nominal system voltage.

What is AEC-Q200 qualification?

AEC-Q200 is the automotive standard for passive component reliability. It includes tests for temperature cycling, vibration, humidity, and thermal shock. EV fuses must meet AEC-Q200 for automotive applications.

Always verify AEC-Q200 qualification for automotive applications.

How do I calculate breaking capacity for EV batteries?

Battery fault current = Battery Voltage / (Battery Internal Resistance + Circuit Resistance). Large EV packs can deliver 20-50kA. Select fuse breaking capacity at least 25% above calculated fault current.

Calculate maximum fault current and add 25% margin for breaking capacity selection.

What mounting torque should I use?

EV fuse bolt terminals typically require 25-30 Nm for M10 bolts and 12-15 Nm for M8 bolts. Use calibrated torque wrench and verify torque after thermal cycling. For more detailed information and application guidance, please consult the product datasheet or contact our technical support team.

Use specified torque values. Verify after installation and thermal cycling.

How do EV fuses coordinate with BMS?

BMS handles moderate overcurrents via contactors. Fuses protect against high-current faults BMS cannot clear. Coordinate fuse time-current curve with BMS trip characteristics for layered protection. For more detailed information and application guidance, please consult the product datasheet or contact our technical support team.

Coordinate fuse with BMS protection curves. Fuse should clear faults BMS cannot handle.