The Gould Shawmut OT400 One-Time Fuse is a 400amp, 250V electrical fuse designed for industrial applications. Made of aluminum and with a length of 8.5 inches and a width of 2 inches, this current-limiting fuse has been continuity tested for reliability. With a voltage rating of 250V or less, this unit is ideal for protecting electrical circuits from overcurrent situations. The dual-pole design ensures enhanced safety and protection, making it a quality product from the trusted brand Gould Shawmut.