Abstract: An enclosure that houses one or more fuses includes one or more fuse positioning structures. A fuse housing in the enclosure holds the one or more fuses. Each fuse positioning structure includes one or more fuse seats. Each fuse seat is configured to contact and apply pressure to a respective fuse in the fuse housing. The fuse positioning structure(s) cause one or both terminals of each fuse to be seated in a respective fuse clip or clips.

Abstract: A window assembly is for an enclosure. The enclosure has a plurality of walls. The window assembly includes a cover member structured to be coupled to each of the plurality of walls in order to form an enclosed region; a window member coupled to the cover member; a frame member coupled to the cover member; and a number of stud members each secured to the frame member and extending through the cover member. The cover member is located between the frame member and the window member.

Abstract: A window assembly is for an enclosure. The enclosure has a plurality of walls. The window assembly includes a cover member structured to be coupled to each of the plurality of walls in order to form an enclosed region; a window member coupled to the cover member; a frame member coupled to the cover member; and a number of stud members each secured to the frame member and extending through the cover member. The cover member is located between the frame member and the window member.

Abstract: A window assembly is for an enclosure. The enclosure has a plurality of walls. The window assembly includes a cover member structured to be coupled to each of the plurality of walls in order to form an enclosed region; a window member coupled to the cover member; a frame member coupled to the cover member; and a number of stud members each secured to the frame member and extending through the cover member. The cover member is located between the frame member and the window member.

Abstract: A window assembly is for an enclosure. The enclosure has a plurality of walls. The window assembly includes a cover member structured to be coupled to each of the plurality of walls in order to form an enclosed region; a window member coupled to the cover member; a frame member coupled to the cover member; and a number of stud members each secured to the frame member and extending through the cover member. The cover member is located between the frame member and the window member.

Abstract: A switch apparatus usable in a DC circuit employs a rotatable shaft having conductors that are removably connected with two or more pairs of contacts that are situated on line conductors and load conductors and that are connected in parallel by the conductors on the shaft. In rotating the shaft to open the switch, one pair of the contacts is electrically disconnected prior to electrical disconnection of the other pair of contacts. Further rotation of the shaft causes the other pair of contact to eventually become disconnected. Electrical arcs thus form only at the air gaps between the other pair of contacts and the conductor. Magnetic field elements in the form of permanent magnets are situated in the vicinity of the air gaps of only the other pair of contacts and apply Lorentz forces to the arcs to extinguish them.

Abstract: A switch apparatus usable in a DC circuit employs a rotatable shaft having conductors that are removably connected with two or more pairs of contacts that are situated on line conductors and load conductors and that are connected in parallel by the conductors on the shaft. In rotating the shaft to open the switch, one pair of the contacts is electrically disconnected prior to electrical disconnection of the other pair of contacts. Further rotation of the shaft causes the other pair of contact to eventually become disconnected. Electrical arcs thus form only at the air gaps between the other pair of contacts and the conductor. Magnetic field elements in the form of permanent magnets are situated in the vicinity of the air gaps of only the other pair of contacts and apply Lorentz forces to the arcs to extinguish them.

Abstract: A switch apparatus usable in a DC circuit employs a rotatable shaft having conductors that are removably connected with two or more pairs of contacts that are situated on line conductors and load conductors and that are connected in parallel by the conductors on the shaft. In rotating the shaft to open the switch, one pair of the contacts is electrically disconnected prior to electrical disconnection of the other pair of contacts. Further rotation of the shaft causes the other pair of contact to eventually become disconnected. Electrical arcs thus form only at the air gaps between the other pair of contacts and the conductor. Magnetic field elements in the form of permanent magnets are situated in the vicinity of the air gaps of only the other pair of contacts and apply Lorentz forces to the arcs to extinguish them.

Abstract: A switch apparatus usable in a DC circuit employs a rotatable shaft having conductors that are removably connected with two or more pairs of contacts that are situated on line conductors and load conductors and that are connected in parallel by the conductors on the shaft. In rotating the shaft to open the switch, one pair of the contacts is electrically disconnected prior to electrical disconnection of the other pair of contacts. Further rotation of the shaft causes the other pair of contact to eventually become disconnected. Electrical arcs thus form only at the air gaps between the other pair of contacts and the conductor. Magnetic field elements in the form of permanent magnets are situated in the vicinity of the air gaps of only the other pair of contacts and apply Lorentz forces to the arcs to extinguish them.

Abstract: An improved arc extinction apparatus that can be used in an improved DC switch apparatus includes a pair of magnetic field elements in the exemplary form of permanent magnets to apply Lorentz forces to the arcs. The magnetic fields are arranged in the vicinity of the air gaps that form between the ends of a pivoting conductor and a pair of contacts such that the system is optimized to extinguish an arc at one air gap when current is flowing through the conductor in a first direction and is further optimized to extinguish an arc at the other air gap when current is flowing in an opposite direction through the conductor. This is accomplished by providing a magnet at each air gap of the circuit, with the magnetic fields being oriented parallel with the pivot axis and having their north poles pointed in the same direction.

Abstract: An improved arc extinction apparatus that can be used in an improved DC switch apparatus includes a pair of magnetic field elements in the exemplary form of permanent magnets to apply Lorentz forces to the arcs. The magnetic fields are arranged in the vicinity of the air gaps that form between the ends of a pivoting conductor and a pair of contacts such that the system is optimized to extinguish an arc at one air gap when current is flowing through the conductor in a first direction and is further optimized to extinguish an arc at the other air gap when current is flowing in an opposite direction through the conductor. This is accomplished by providing a magnet at each air gap of the circuit, with the magnetic fields being oriented parallel with the pivot axis and having their north poles pointed in the same direction.