A4BT1800 is the 1800A selection in Mersen’s A4BT Series. The electrical profile is 600V AC / 500V DC, with 200kA AC / 100kA DC published interrupting performance. The series is intended for applications needing 10-second time delay at 500% rating for large motors and high-inrush loads.
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Mersen A4BT1800 is a 1800A Class L fuse from the A4BT Series. The published rating combines 600V AC / 500V DC operation and 200kA AC / 100kA DC short-circuit 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 Mains, Feeders, Motors. For design release, confirm coordination, dimensions and approval details in the official Mersen documentation.
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