OPV315AT is an Automatic Resetting Device, manufactured by TT Electronics, for use in industrial, marine, and commercial applications. It is a thermally activated, self-contained, one-piece construction device used to protect systems from overcurrent conditions. It is designed with a preset trip point and automatically resets after overcurrent conditions have been removed. The device can be used for a variety of applications, including motor protection, fuse panel protection, overvoltage protection, current monitoring, and industrial control systems. The OPV315AT is rated for up to 315A at 600V AC or 125V/250V DC and features an easy-to-install design, adjustable thermal trip point, and a manual reset option.