Abstract: A high current fuse with a short time constant is provided for use in an electric vehicle. The fuse is designed to exhibit thermal characteristics that are similar if not substantially identical to those of the wire bond interconnects used in the vehicle's battery pack. As a result, the system does not go into an overheat protection condition when the system is subjected to repetitive high current cycles, such as those common during aggressive and/or spirited driving. The fuse includes an arc suppressor.

Abstract: A surge protection element includes a contact stud and a contact element disposed at a distance from the contact stud. A connection element is configured to be transferred into a first position, in which the connection element is applied to the contact stud and to the contact element so as to electrically connect the contact stud to the contact element, and into a second position, in which the connection element is disposed at a distance from the contact stud and the contact element. In the first position, the connection element engages at least partially around at least one of the contact stud and the contact element and a thermally separable connection is provided between the connection element and the contact stud and between the connection element and the contact element.

Abstract: A protection device for a circuit includes a case and a breaker unit received in the case. The case has two sets of wires and each wire has two wire ends connected to the case. The breaker unit has at least one meltable member, at least two first resilient members, at least two conductive members and at least two second resilient members. When overload or overheat, the meltable member of the breaker unit reaches a pre-set temperature and melts and breaks to become debris. The conductive members are separated from the two wire ends to cut off the circuit.

Abstract: A high voltage fuse is disclosed. The high voltage fuse is compact and includes a molded plastic housing that holds connecting terminals, a fuse element, and optionally, a spring between one of the terminals and the fuse element or thin wire. When the fuse opens upon melting of the fuse element, the spring pulls apart ends of the wire and separates them as far as the spring and housing allow. The terminals may be mounted in separated parts of the housing, separated in some embodiments by the spring acting as an arc barrier. When the fuse element melts and the ends are pulled apart, the separation itself, or the arc barrier, prevents arcing between ends of the fuse element. In another embodiment, the housing itself furnishes a non-conducting plastic spring which urges the fuse link apart, the spring itself dividing the housing into two separate parts to prevent arcing.

Abstract: A flipper is described for a fuse of the type having a generally cylindrical fuse tube, a fusible element within the tube and a fuse leader, the fuse leader having two ends with one of the ends connected to the fusible element disposed within the tube and with the other end of the leader adapted to be connected to a fixed terminal such as one of the two terminals of a power factor capacitor. In one embodiment, the flipper has two elongated arms disposed adjacent one another, a helical torsion spring at one end of each arm, an eyelet connecting together the other end of the arms and adapted to pass through the fuse leader, and a hook or similar connection carried by the springs to mount the flipper assembly to the associated terminal to which the free end of the fuse leader is joined. The flipper assists in the extraction of the leader from the fuse tube and provides positive restraint of the leader after the fuse has blown.

Abstract: A combination fuse has a current limiting section and a low current expulsion section with the expulsion section within the high current section. This arrangement makes it possible to increase the length of the expulsion tube as compared to the prior art and provide greater arc cooling without increasing the overall length of the fuse. In addition the fuse arrangement places one fuse terminal between the ends of the fuse rather than at one end as in the prior art, thereby reducing the strain on the mounting means and the tendency to vibrate. The expulsion section includes an expulsion tube with a standard fuse link inside. The expulsion tube is mounted within the casing of the current limiting section to an end closure at one end of the casing. The expulsion tube projects through an end closure at the other end of the casing. A connector terminal is mounted to the casing adjacent the end from which the expulsion tube projects.

Abstract: An indicating sectional two-part fuse is provided having a high-current current-limiting section, and a low-current expulsion section, mechanically connected together, and in electrical series, the low-current section utilizing a standard-type fuse-link, which may be replaced. The high-current current-limiting section may contain one or more current-limiting type fuse elements, supported by an interrupter rod within an enclosed casing filled with an arc-extinguishing granular material, and the low-current expulsion section of the fusible device may comprise an open-ended fuse tube, through which the standard fuse-link may extend, with the cable of the fuse-link extending out of the open end of the fuse tube.

Abstract: An indicating composite sectionalized fuse is provided having a high-current interrupting section, and a mechanically-connected detachable low-current interrupting section in series therewith, with the low-current interrupting section including a pull-away indicating fuse-link cable, which indicates externally a blown condition of the fuse. The low-current interrupting section is replaceable, following a low-current interruption, which has no effect upon the high-current interrupting section, the latter remaining intact and may be further used. During high-current interruption, both sections are fused, and collectively contribute together to a quick interruption of the connected electrical circuit, again there being an external indicated condition of the blown condition of the fuse by an ejection of the fuse-link cable.

Abstract: A heat-sensitive protector, that is connectable into an electric circuit, has an elongated, effectively non-fusing element which performs the function of a connector as long as that protector is intact, and thereafter moves fron a retracted position to an extended position to perform the function of an indicator when that protector responds to heat to open that circuit. That element spans the full distance between the terminals of that heat-sensitive protector.