Mersen A4BT1000 1000A 600V Class L Time-Delay Fuse

Part A4BT1000 belongs to the Mersen A4BT Series and is rated 1000A. Electrical limits are 600V AC / 500V DC, with 200kA AC / 100kA DC interrupting capability. The protection profile emphasizes 10-second time delay at 500% rating for large motors and high-inrush loads. Mechanically, it follows the Class L form factor and blade terminal style for clip-mounted fuse installations. Typical selection contexts include Motor Controllers, Transformers, Mains. For design release, confirm coordination, dimensions and approval details in the official Mersen documentation.