NITD20 – COOPER BUSSMANN

The NITD20, manufactured by Cooper Bussmann, is a cylindrical cartridge fuse designed for overcurrent protection in AC circuits. It features a current rating of 20 Amperes and a voltage rating of 550VAC, indicating its suitability for industrial and commercial power distribution applications. The fuse element, enclosed within a ceramic body for enhanced arc quenching and dielectric strength, provides a fast-acting or time-delay characteristic (specification not provided, consult datasheet). Its cylindrical form factor, common in European and other international standards, facilitates easy installation and replacement in compatible fuse holders. The fuse’s interrupting rating, a critical parameter for safety, is not specified and must be verified against application fault current levels to ensure adequate protection and prevent catastrophic failure under short-circuit conditions. The NITD20 complies with relevant IEC standards for cylindrical fuses, but specific certifications (e.g., UL, CSA) require verification.