EF3 Fuse 200V DC IR up to 50kA, Size 77x22mm

Adler EF3 series EV fuses is specially engineered and tested to provide best-in-class protection performance in protecting high power battery charging and managing systems of Electrical Vehicles and Hybrid Electrical Vehicles.



Possible Amperage Rating: 150  A or 350 A (please select above)
• Reliable clearing of DC fault currents
• High cycling performance
• Low watt losses
• Ultra-compact size and power density
• High breaking capacity to 50kA
• Operation as low as 410% In overload protection
• QR code marks on each fuse for traceability

Attention:
You need electrical engineering knowledge to select the fuses! Please do not order if you do not have the appropriate training.
Please note that a higher current than the rated current can flow for a certain time with all fuses. All components in the circuit must be designed for this current.
Observe the maximum voltage and breaking capacity!
We often see fuses being fitted directly to one pole of a battery cell. We do NOT recommend this without consulting the cell manufacturer. Like all fuses, this fuse also heats up in the vicinity of the cut-off current. The heat input into the cell can have negative effects.
Ambient temperatures influence the cut-off point

FAQ:
Q: Shouldn't the fuse be as close to the battery as possible? So preferably on the battery block?
A: Due to the heat input, we do not recommend mounting directly on a cell. Use fuse holders. You can make the connection up to the fuse short-circuit-proof by laying the cables in such a way that a short circuit before the fuse is impossible. It is also possible to use double-insulated cables. We recommend NSGAFöü, for example. This is considered short-circuit-proof and has increased temperature resistance.