The present disclosure relates to a fuse bank design for a heating, ventilation, and/or air conditioning (HVAC) system. The disclosed stair-step design enables the positioning of electrical components of the fuse bank in a non-vertically aligned manner, which blocks the accumulation of heat in the upper electrical components as a result of convection heating from the lower components of the fuse bank during operation of the HVAC system. For example, a fuse bank is disclosed for an HVAC system that includes: a mounting surface; a first fuse block including a first fuse holder coupled to the mounting surface; a spacer coupled to the mounting surface vertically below the first fuse block; and a second fuse block including a second fuse holder coupled to the spacer, wherein the spacer offsets the second fuse block from the mounting surface of the fuse bank in a stair-step arrangement.

The present disclosure relates to a fuse bank design for a heating, ventilation, and/or air conditioning (HVAC) system. The disclosed stair-step design enables the positioning of electrical components of the fuse bank in a non-vertically aligned manner, which blocks the accumulation of heat in the upper electrical components as a result of convection heating from the lower components of the fuse bank during operation of the HVAC system. For example, a fuse bank is disclosed for an HVAC system that includes: a mounting surface; a first fuse block including a first fuse holder coupled to the mounting surface; a spacer coupled to the mounting surface vertically below the first fuse block; and a second fuse block including a second fuse holder coupled to the spacer, wherein the spacer offsets the second fuse block from the mounting surface of the fuse bank in a stair-step arrangement.

An electrical assembly may include a bus bar assembly, a fuse connected to the bus bar assembly, a contactor connected to the bus bar assembly, a bracket connected to the bus bar assembly, and/or a cooling member connected to the bracket such that the fuse is indirectly connected to the cooling member via the bus bar assembly and the bracket. A method of operating an electrical assembly may include controlling the contactor to provide current from a power source to a load, generating heat via the current flowing through the fuse, conducting the heat from the fuse to the bus bar assembly, conducting the heat from the bus bar assembly to the cooling member, and/or dissipating the heat via the cooling member.

An electrical assembly may include a bus bar assembly, a fuse connected to the bus bar assembly, a contactor connected to the bus bar assembly, a bracket connected to the bus bar assembly, and/or a cooling member connected to the bracket such that the fuse is indirectly connected to the cooling member via the bus bar assembly and the bracket. A method of operating an electrical assembly may include controlling the contactor to provide current from a power source to a load, generating heat via the current flowing through the fuse, conducting the heat from the fuse to the bus bar assembly, conducting the heat from the bus bar assembly to the cooling member, and/or dissipating the heat via the cooling member.

A fuse link including magnet for inducing arc directivity is provided, in which the magnet is arranged in an inner surface, an outer surface or the inside of an insulating tube forming the fuse link, and the progress direction of arc energy is coherently directed in a certain direction in accordance with Fleming's left-hand rule by the direction of magnetic field of the arranged magnet so as to increase a disconnection speed of an element (i.e., reducing a blocking speed of a fault current), thereby increasing fault current blocking performance of the fuse link. In particular, a position of the magnet arranged on the insulating tube is arranged at a middle point between a notched portion and the notched portion, a point of notched portion, and the insulating tube corresponding to the middle point between the notched portion and the notched portion and the point of notched portion.

A fuse link including magnet for inducing arc directivity is provided, in which the magnet is arranged in an inner surface, an outer surface or the inside of an insulating tube forming the fuse link, and the progress direction of arc energy is coherently directed in a certain direction in accordance with Fleming's left-hand rule by the direction of magnetic field of the arranged magnet so as to increase a disconnection speed of an element (i.e., reducing a blocking speed of a fault current), thereby increasing fault current blocking performance of the fuse link. In particular, a position of the magnet arranged on the insulating tube is arranged at a middle point between a notched portion and the notched portion, a point of notched portion, and the insulating tube corresponding to the middle point between the notched portion and the notched portion and the point of notched portion.

A power distribution panel for distributing power to a plurality of components. A modular frame may removably attach in an aperture of a side of a chassis. A first module may be removably attached in an opening of the modular frame. A second module, different from the first module, may be removably attached in the opening of the modular frame.

A power distribution panel for distributing power to a plurality of components. A modular frame may removably attach in an aperture of a side of a chassis. A first module may be removably attached in an opening of the modular frame. A second module, different from the first module, may be removably attached in the opening of the modular frame.

A protection relay device includes a housing and a fuse unit. The fuse unit includes a connection conductor, an input conductor connected to the connection conductor and receiving an external power, a fuse connected to the connection conductor, and an external device connection conductor connected to the fuse on a side opposite to the input conductor, and to which an external device is connected. A short-circuit induction conductor is provided on at least one of the input conductor on a side opposite to the fuse and the flapper portion, the short-circuit induction conductor protruding toward the other of the input conductor and the flapper portion.

A protection relay device includes a housing and a fuse unit. The fuse unit includes a connection conductor, an input conductor connected to the connection conductor and receiving an external power, a fuse connected to the connection conductor, and an external device connection conductor connected to the fuse on a side opposite to the input conductor, and to which an external device is connected. A short-circuit induction conductor is provided on at least one of the input conductor on a side opposite to the fuse and the flapper portion, the short-circuit induction conductor protruding toward the other of the input conductor and the flapper portion.