A circuit board with integrated fusing includes an insulating substrate having a circuit trace formed on a surface thereof, the circuit trace including a first circuit trace portion and a second circuit trace portion. A fusible link electrically connects the first circuit trace portion to the second circuit trace portion, the fusible link including a planar surface extending from the first circuit trace portion to the second circuit trace portion. A dielectric reflow encapsulates the fusible link on the planar surface from the first circuit trace portion to the second circuit trace portion.

A flexible printed circuit board (FPCB) including a pattern circuit layer. The pattern circuit layer has a pattern fuse embedded therein, and the pattern fuse includes a first conductive wire made of a metal and having a spiral structure, and a second conductive wire made of a metal and having a spiral structure. The first conductive wire and the second conductive wire have a double helix structure.

Disclosed are various protection devices and associated methods. In some embodiments, a protection device may include a fuse assembly having a fusible link extending between a first lead end and a second lead end, and a first lead extending from the first lead end and a second lead extending from the second lead end. The protection device may further include a body including a first section coupleable with a second section, wherein the first and second sections define a central cavity housing the fusible link. The first section may include an interior face operable to engage an opposite interior face of the second section, an engagement member extending away from the interior face towards the second section, and an engagement channel adjacent the engagement member, the engagement channel operable to receive a corresponding engagement member of the second section.

Disclosed are various protection devices and associated methods. In some embodiments, a protection device may include a fuse assembly having a fusible link extending between a first lead end and a second lead end, and a first lead extending from the first lead end and a second lead extending from the second lead end. The protection device may further include a body including a first section coupleable with a second section, wherein the first and second sections define a central cavity housing the fusible link. The first section may include an interior face operable to engage an opposite interior face of the second section, an engagement member extending away from the interior face towards the second section, and an engagement channel adjacent the engagement member, the engagement channel operable to receive a corresponding engagement member of the second section.

A fuse including an electrically insulating, tubular fuse body, electrically conductive first and second endcaps disposed over opposing ends of the fuse body, a fusible element extending through the fuse body and connecting the first endcap to the second endcap, the fusible element having a central portion adapted to melt and separate upon an overcurrent condition in the fuse, and first and second arc barriers disposed on the fusible element on opposing sides of the central portion, the first and second arc barriers formed of a silicone composition that includes an arc quenching filler suspended in a silicone resin.

A fuse including an electrically insulating, tubular fuse body, electrically conductive first and second endcaps disposed over opposing ends of the fuse body, a fusible element extending through the fuse body and connecting the first endcap to the second endcap, the fusible element having a central portion adapted to melt and separate upon an overcurrent condition in the fuse, and first and second arc barriers disposed on the fusible element on opposing sides of the central portion, the first and second arc barriers formed of a silicone composition that includes an arc quenching filler suspended in a silicone resin.

A fuse assembly including a fuse connected to two busbars, an injection molded base and an injection molded cover. The busbars are powder-coating with a powder-based adhesive or adhesion promoter, then cured in an oven. The busbars are then placed in the cavity image of an injection molding apparatus. Plastic is heated to a liquid form and injected into the cavity image. The resulting injection molded base is resistant to both dust and water, protecting the fuse inside.

A fuse assembly including a fuse connected to two busbars, an injection molded base and an injection molded cover. The busbars are powder-coating with a powder-based adhesive or adhesion promoter, then cured in an oven. The busbars are then placed in the cavity image of an injection molding apparatus. Plastic is heated to a liquid form and injected into the cavity image. The resulting injection molded base is resistant to both dust and water, protecting the fuse inside.

Provided are approaches for forming a fusible element assembly, wherein an arc suppressant (e.g., silicone) is deposited on a fusible element. The arc suppressant is delivered to the fusible element at a plurality of angles.

Provided are approaches for forming a fusible element assembly, wherein an arc suppressant (e.g., silicone) is deposited on a fusible element. The arc suppressant is delivered to the fusible element at a plurality of angles.