A4BT900 extends the Mersen A4BT Series lineup with a 900A rating. For selection, note the 600V AC / 500V DC rating and 200kA AC / 100kA DC interrupting data. 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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At 900A, A4BT900 is one of the rated options available in Mersen’s A4BT Series. For coordination, the key ratings are 600V AC / 500V DC and 200kA AC / 100kA DC interrupting performance. 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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