Abstract: A fuse incorporates a fusible element assembly and an auxiliary fusible element assembly in a solid arc extinguishing material configuration. The fusible element assembly has a first operating characteristic and the auxiliary fusible element has a second operating characteristic different than the first operating characteristic.

Abstract: A fuse incorporates a fusible element assembly and an auxiliary fusible element assembly in a solid arc extinguishing material configuration. The fusible element assembly has a first operating characteristic and the auxiliary fusible element has a second operating characteristic different than the first operating characteristic.

Abstract: A fuse incorporates a fusible element assembly and an auxiliary fusible element assembly in a solid arc extinguishing material configuration. The fusible element assembly has a first operating characteristic and the auxiliary fusible element has a second operating characteristic different than the first operating characteristic. An installation adapter may be used to adapt a fuse to a non-standard mounting for the fuse. The installation adapter may include first and second adapter members that secure to the fuse to provide contacts having an appropriate spatial relationship to engage the non-standard mounting. A fuse and an installation adapter may be packaged as a kit.

Abstract: A fuse incorporates a fusible element assembly and an auxiliary fusible element assembly in a solid arc extinguishing material configuration. The fusible element assembly has a first operating characteristic and the auxiliary fusible element has a second operating characteristic different than the first operating characteristic. An installation adapter may be used to adapt a fuse to a non-standard mounting for the fuse. The installation adapter may include first and second adapter members that secure to the fuse to provide contacts having an appropriate spatial relationship to engage the non-standard mounting. A fuse and an installation adapter may be packaged as a kit.

Abstract: A fuse cartridge is provided having improved tensile strength via the provision of a mechanical strain wire that is in parallel with a fusible element mechanically but not electrically, thereby increasing the tensile strength of the fusible element without altering the electrical time-current characteristics of the fusible element. In a preferred embodiment, the strain wire is provided by looping a fusible element wire from a first terminal around a second terminal and back near the first terminal but electrically insulated therefrom.

Abstract: A fuse is provided that is suitable for operation in unusual environments and includes an operation indicator that is simple and reliable. A movable arcing tube is released during operation. As the arcing tube moves outside the fuse assembly, a latching spring moves into a receiving groove in the arcing tube to retain the arcing tube in the external operated position.

Abstract: A current-limiting device is provided that defines a cavity of predetermined dimensions and an elongated circuitous path through the cavity. The device also includes provisions for supporting a current-limiting fusible element along the path. The cavity is filled with a pulverulent arc-quenching filler material. To increase the heat-withstand capabilities of the current-limiting device, heat withstand facilities are provided between the portions of the circuitous path to maximize the length of the path while minimizing the corresponding volume of the device, e.g. via heat resistant materials, the addition of heat shielding materials to the cavity-defining device structure or the structure of support portions of the cavity-defining structure. In one specific arrangement, the path of the fusible element is defined by one or more U-shaped sections. The fusible element includes a configuration of steps or bends along its length to maximize the path length of the fusible element.

Abstract: A fuse is provided that is suitable for operation in unusual environments and includes an operation indicator that is simple and reliable. A movable arcing tube is released during operation. As the arcing tube moves outside the fuse assembly, a latching spring moves into a receiving groove in the arcing tube to retain the arcing tube in the external operated position.