Gould Shawmut Amp-Trap A4J3 Class J Fast-Acting Fuse, 3A, 600V AC (Box of 7)

The Gould Shawmut Amp-Trap A4J3 is a Class J fast-acting fuse designed for superior protection in industrial and commercial electrical systems. Rated at 3 amperes and 600 volts AC, these fuses provide current-limiting performance to minimize damage from short circuits and overloads. They are ideal for applications such as motor branch circuits, transformers, lighting, heating, and control circuits where quick response to faults is critical. Key features include high interrupting capacity up to 200kA, ensuring safe operation in high-fault environments, and a compact ferrule design for easy installation in fuse holders or blocks. Advantages over similar products like standard cartridge fuses include faster blow times, better arc quenching, and reduced let-through current, which enhances equipment longevity and safety. However, they are not time-delay fuses, so they may not be suitable for inrush current scenarios like motor startups without additional considerations. These fuses are from Gould Shawmut, now part of Mersen, known for reliable overcurrent protection. The box contains 7 fuses, appearing new but in a slightly worn original packaging, making them a cost-effective option for maintenance and replacement needs in manufacturing, HVAC, and power distribution systems.