The ANN-50 is a very fast-acting fuse limiter manufactured by Cooper Bussmann, designed to provide rapid response to short-circuit currents in electrical circuits. It is rated for 50A at 125Vac (or less) and 80Vdc (or less), with an interrupting rating of 2,500A ac and 2,700A dc, ensuring reliable protection against overcurrent conditions. The fuse features an open link element visible through a mica window for easy inspection, and stud mounts directly into Buss fuseblock 4164. With dimensions of 3.19" length and 0.88" diameter, the ANN-50 is UL recognized (Guide JFHR2, File E56412) and CSA component accepted, making it suitable for industrial and commercial applications requiring fast-acting overcurrent protection.