Abstract: A snap-on assembly includes a housing that holds an integrated circuit with a sensor. A connector supplies power to the integrated circuit and transmits a signal from the integrated circuit to an electronic circuit. An insert fits into an opening of the housing and secures a conductor in the housing without a mechanical fastener. The sensor measures a magnetic field resulting from a current traveling through the conductor.

Abstract: Disclosed are multi-channel input trigger sensors for pyrotechnic fuses. In some embodiments, the current sensor may include a multi-channel-input triggering pyrotechnic fuse for electric vehicle (EV) applications, which is fast, reliable, and operates with different trigger sources and with different vehicle modes.

Abstract: A snap-on assembly includes a housing that holds an integrated circuit with a sensor. A connector supplies power to the integrated circuit and transmits a signal from the integrated circuit to an electronic circuit. An insert fits into an opening of the housing and secures a conductor in the housing without a mechanical fastener. The sensor measures a magnetic field resulting from a current traveling through the conductor.

Abstract: A hybrid current sensor (104, 204, 304, 404, 504, 554, 604, 624, 644, 664) may include a main conductor (206, 306, 406), having a first end (220) and a second end (222), wherein a current flow direction extends between the first end (220) and the second end (222), as well as a magnetic core (208, 308, 408), disposed at least partially around a middle portion of the main conductor (206, 306, 406). The magnetic core (208, 308, 408) may define a core gap region (226) above a first surface of the main conductor (206, 306, 406), where a chip assembly (218, 518, 618, 628) is disposed within the core gap region (226). As such, in a first portion the core gap region (226) has a first gap (G1) along a transverse direction, perpendicular to the current flow direction, and wherein in a second portion the core gap region (226) has a second gap (G2) along the transverse direction, greater than the first gap (G1).

Abstract: A pyrotechnic current breaker with passive and active triggering for severing a busbar through which electric current flows has a housing through which passes the busbar that is formed with at least one break point and an adjacent fuse part. A separating punch is shiftable in the housing past the busbar to cut same. There is also a first igniter for passive triggering and moving the punch past the busbar and a second igniter for active triggering and moving the punch past the busbar. Both of the igniters act on the separating punch such that, when triggered, the separating punch cuts the busbar at the break point. The first igniter has two conductors connected to two sides of the fuse part and the second igniter has contacts connectable to an external trigger. One of the igniters is in the separating punch.

Abstract: An active/passive fuse module including a fuse having an electrically insulating fuse body, first and second endcaps disposed on opposing ends of the fuse body, a fusible element extending through the fuse body between the first endcap and the second endcap, and an arc quenching material disposed within the fuse body and surrounding the fusible element. The fuse module further includes a pyrotechnic interrupter (PI) coupled to the fuse body, the PI having a housing defining a shaft, a piston disposed within the shaft, a drive pin extending from the piston into the fuse body, the drive pin terminating in a cutter disposed adjacent the fusible element, and a pyrotechnic ignitor disposed within the shaft above the piston configured to detonate upon receiving an initiation signal from a controller, whereby the piston and the drive pin are forcibly driven through the shaft causing the cutter to separate the fusible element.

Abstract: The invention relates to a pyrotechnic current breaker (1) for severing a bus bar (2), comprising a first detonator (7) for passive tripping and a second detonator (14) for active tripping. Both act on a severing piston (9), which severs the bus bar (2) at at least one severing point (5a, 5b) in the event of tripping. The first detonator (7) is connected, by means of two conductors (8a, 8b), to the two sides of a fuse, through which the current through the bus bar (2) flows, while the second detonator (14) has contacts (15a, 15b) for the connecting of an external tripping device. According to the invention, one of the Iwo detonators, preferably the first detonator (7), is disposed in the severing piston (9). The fuse is preferably formed integrally with the bus bar (2), the fuse being formed either by the severing point(s) (5a, 5b) or by a weakened region between two severing points (5a, 5b).

Abstract: A fuse including a fuse body having a main body portion formed of a dielectric material, a plurality of arc chambers formed in the main body portion, the arc chambers arranged in a matrix configuration, a conductor extending through the main body portion and intersecting the arc chambers, the conductor having bridge portions disposed within the arc chambers, the bridge portions being mechanically weaker than other portions of the conductor and configured to melt and separate upon the occurrence of an overcurrent condition in the fuse.

Abstract: An active/passive fuse module including a base, a busbar disposed on the base and including a fuse element extending over a cavity in a top surface of the base and having a plurality of weak points formed therein, a pyrotechnic interrupter (PI) disposed atop the base and including a piston disposed within a shaft above the fuse element, the piston having an edge with a geometry that corresponds to a geometry of a pattern defined by the weak points in the fuse element, a first pyrotechnic ignitor coupled to a controller and configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads and configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

Abstract: A fuse housing for safe outgassing of a fuse is disclosed. The fuse housing features labyrinth walls disposed at opposing sides of the fuse housing. The labyrinth walls feature serpentine paths for the flow of outgassing material. At an end of the serpentine paths which is farthest away from a fuse element are vent channels. The vent channels are narrower in depth than that of the serpentine paths of the labyrinth walls, facilitating a suctioning effect during outgassing. Conductive material deposits along the serpentine paths so that the fuse maintains a high OSR rating. By directing and controlling the outflow of gases, the fuse housing is able to reduce the temperature of the gases produced. The fuse housing is also able to reduce the physical and observable effects of outgassing.

Abstract: A snap-on assembly includes a housing that holds an integrated circuit with a sensor. A connector supplies power to the integrated circuit and transmits a signal from the integrated circuit to an electronic circuit. An insert fits into an opening of the housing and secures a conductor in the housing without a mechanical fastener. The sensor measures a magnetic field resulting from a current traveling through the conductor.

Abstract: A fuse housing for safe outgassing of a fuse is disclosed. The fuse housing features labyrinth walls disposed at opposing sides of the fuse housing. The labyrinth walls feature serpentine paths for the flow of outgassing material. At an end of the serpentine paths which is farthest away from a fuse element are vent channels. The vent channels are narrower in depth than that of the serpentine paths of the labyrinth walls, facilitating a suctioning effect during outgassing. Conductive material deposits along the serpentine paths so that the fuse maintains a high OSR rating. By directing and controlling the outflow of gases, the fuse housing is able to reduce the temperature of the gases produced. The fuse housing is also able to reduce the physical and observable effects of outgassing.

Abstract: An active/passive fuse module including a base, a busbar disposed on a top surface of the base and including a fuse element and first and second terminal portions extending from opposite ends of the fuse element, the fuse element extending over a cavity in the top surface of the base, a pyrotechnic interrupter (PI) disposed atop the base, the PI including a piston disposed within a shaft above the fuse element, a first pyrotechnic ignitor coupled to a controller, the first pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads, the second pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

Abstract: A fuse including a fuse body having a main body portion formed of a dielectric material, a plurality of arc chambers formed in the main body portion, the arc chambers arranged in a matrix configuration, a conductor extending through the main body portion and intersecting the arc chambers, the conductor having bridge portions disposed within the arc chambers, the bridge portions being mechanically weaker than other portions of the conductor and configured to melt and separate upon the occurrence of an overcurrent condition in the fuse.

Abstract: A fuse housing for safe outgassing of a fuse is disclosed. The fuse housing features labyrinth walls disposed at opposing sides of the fuse housing. The labyrinth walls feature serpentine paths for the flow of outgassing material. At an end of the serpentine paths which is farthest away from a fuse element are vent channels. The vent channels are narrower in depth than that of the serpentine paths of the labyrinth walls, facilitating a suctioning effect during outgassing. Conductive material deposits along the serpentine paths so that the fuse maintains a high OSR rating. By directing and controlling the outflow of gases, the fuse housing is able to reduce the temperature of the gases produced. The fuse housing is also able to reduce the physical and observable effects of outgassing.

Abstract: An active/passive fuse module including a base, a busbar disposed on the base and including a fuse element extending over a cavity in a top surface of the base and having a plurality of weak points formed therein, a pyrotechnic interrupter (PI) disposed atop the base and including a piston disposed within a shaft above the fuse element, the piston having an edge with a geometry that corresponds to a geometry of a pattern defined by the weak points in the fuse element, a first pyrotechnic ignitor coupled to a controller and configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads and configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

Abstract: Provided herein are protection devices having U-shaped fuse elements. In some embodiments, a protection device may include a housing defining a cavity, and a fuse element within the cavity. The fuse element may include a first component and a second component separated by a barrier, and wherein the first and second components are joined at a fusible bridge.

Abstract: An active/passive fuse module including a base, a busbar disposed on a top surface of the base and including a fuse element and first and second terminal portions extending from opposite ends of the fuse element, the fuse element extending over a cavity in the top surface of the base, a pyrotechnic interrupter (PI) disposed atop the base, the PI including a piston disposed within a shaft above the fuse element, a first pyrotechnic ignitor coupled to a controller, the first pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads, the second pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

Abstract: A method provides electronic overload protection having a thermal trip level. The method executes a function by a processor; provides the electronic overload protection by the function executed by the processor; and adjusts the thermal trip level by the function executed by the processor in order to mimic adjusting a physical thermal characteristic of a thermal time constant of a fixed mechanical system.

Abstract: A method provides electronic overload protection having a thermal trip level. The method executes a function by a processor; provides the electronic overload protection by the function executed by the processor; and adjusts the thermal trip level by the function executed by the processor in order to mimic adjusting a physical thermal characteristic of a thermal time constant of a fixed mechanical system.