Shawmut ATQ3-1 Time-Delay Fuse 2A 500VAC

The Shawmut ATQ3-1 Time-Delay Fuse is a 2 A Amp-Trap midget fuse rated for 500 VAC, part of the ATQ series. As a time-delay (slow-blow) device, it tolerates brief overloads while protecting circuits from sustained faults in high‑voltage applications. ATQ fuses are rated for 500 VAC and are available in current ratings from 0.1 A up to 30 A, with the ATQ3-1 variant representing the 2 A segment of this family. The Amp-Trap line originated with Ferraz Shawmut and is now carried under the Mersen name, continuing to offer compact cylindrical fuses designed for use in industrial control panels and power circuits where brief surges may occur but faults must be isolated quickly. This 2 A, 500 VAC part is suitable for protecting moderate-load circuits within equipment that expects occasional inrush or surge currents, aligning with the ATQ family’s documented voltage rating and broad range of current ratings.