Abstract: Electrical switching device are disclosed having a housing with internal component within the housing. The internal components comprise contacts configured to operate, to change the state of the switching device from a closed state, allowing current flow through the switching device to an open state which interrupts current flow through the switching device. A pyrotechnic feature is included that is configured to interact with the internal components to transition the switching device from the closed state to the open state when the pyrotechnic feature is activated. The pyrotechnic feature is configured to trigger in response to levitation between the contacts at elevated current signal flowing through the switching device.

Abstract: Fuse devices and electrical systems using the fuse devices are disclosed, with the fuse devices having internal components to cause a fuse blown event when the pre-determined current level is reached through the contacts. The internal components can comprise a levitation actuator that causes separation between one or more of the contacts as the current level approaches the predetermined level. This causes contact levitation and arcing, which increases the resistance at the contact being separated. This in turn causes the current through the contacts to seek another path that in the embodiments herein is a path to a pyro feature. The current activates the pyro feature, which causes the contacts to separate and puts the fuse device in “fuse blown” condition where currents can no longer flow through the contacts.

Abstract: Contact assemblies are described herein having certain components, or portions thereof, that are formed integral to one another to reduce the complexity of manufacturing, improve the operation characteristics, and increase operational reliability of devices using the contact assemblies. New shapes to features and components of the contact assemblies are also disclosed, with the shapes providing the desired operational characteristics. Embodiments of the invention are also directed contactors or fuses (i.e., electrical switching devices) utilizing the contactor assemblies according to the present invention, and to electrical circuits and systems utilizing the electrical switching devices according to the present invention.

Abstract: Electrical switching device are disclosed having a housing with internal component within the housing. The internal components comprise contacts configured to operate, to change the state of the switching device from a closed state, allowing current flow through the switching device to an open state which interrupts current flow through the switching device. A pyrotechnic feature is included that is configured to interact with the internal components to transition the switching device from the closed state to the open state when the pyrotechnic feature is activated. The pyrotechnic feature is configured to trigger in response to levitation between the contacts at elevated current signal flowing through the switching device.

Abstract: A contactor assembly is adapted for switching power to a circuit having a power source. The contactor assembly includes a housing, carry contacts, and arc contacts. The housing defines an interior compartment and includes internal chamber walls that laterally extend within the compartment to define a protection chamber. The carry contacts are disposed in the protection chamber of the housing. The carry contacts include conductive bodies that protrude from the housing and are configured to close the circuit. The arc contacts are disposed in the housing outside of the protection chamber. The arc contacts include conductive bodies that protrude from the housing and are configured to close the circuit. The internal chamber walls of the housing prevent material that is expelled from one or more of the arc contacts when an electric arc emanates from one or more of the arc contacts from contaminating one or more of the carry contacts.

Abstract: A contactor assembly is adapted for switching power to a circuit having a power source. The contactor assembly includes a housing, carry contacts, and arc contacts. The housing defines an interior compartment and includes internal chamber walls that laterally extend within the compartment to define a protection chamber. The carry contacts are disposed in the protection chamber of the housing. The carry contacts include conductive bodies that protrude from the housing and are configured to close the circuit. The arc contacts are disposed in the housing outside of the protection chamber. The arc contacts include conductive bodies that protrude from the housing and are configured to close the circuit.