A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, arc barrier materials and single piece terminal fabrications. Methods of manufacture are also disclosed.

A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, and arc barrier materials. Methods of manufacture are also disclosed.

A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, and arc barrier materials. Methods of manufacture are also disclosed.

An example interruption switch includes a casing surrounding a contact unit, defining a current path through the switch, which has two connection contacts, a separation region and a sabot. A current supplied to the contact unit may be interrupted via the one of the connection contacts and discharged via the other connection contact. At least one chamber in the switch, delimited by the separation region, is substantially filled with a vaporizable medium in contact with the separation region. The separation region is separable into at least two parts through the supplied current when a threshold amperage is exceeded. An electric arc forming between the two parts at least partially vaporizes the vaporizable medium, and a gas pressure to which the sabot is exposed forms. The sabot moves, in the casing, from a starting to an end position, achieving an insulation spacing between the connection contacts.

The present disclosure discloses a miniature super surface mount fuse, comprising: a fuse element provided with a low overload fusing point and at least two high breaking capacity fusing points connected in series with the low overload fusing point and respectively arranged on two sides of the low overload fusing point, at least two cavity plates provided with cavities, the low overload fusing point and the high breaking capacity fusing points being located at corresponding positions of the cavities; the present disclosure further provides a manufacturing method for a surface mount fuse; the miniature super surface mount fuse of the present disclosure can provide the protection for the civil consumer electronic circuit under various overload conditions without the occurrence of safety hazards such as smoking or cracking of the housing or explosion.

A power fuse for protecting an electrical load subject to transient load current cycling events in a direct current electrical power system is provided. The power fuse includes at least one fuse element assembly that includes an elongated planar substrate, a plurality of fusible weak spots, and a conductor. The weak spots are formed on the substrate and are longitudinally spaced from one another on the substrate. The conductor is separately provided from the substrate and the weak spots. The conductor includes a solid elongated strip of metal having no stamped weak spot openings therein and therefore avoiding thermal-mechanical fatigue strain in the conductor when subjected to the transient load current cycling events. The solid elongated strip of metal includes coplanar connector sections that are mounted to respective ones of the weak spots and obliquely extending sections bent out of plane of the connector sections to extend above the substrate.

A protection device comprises a substrate, a fusible element and a heating element. The substrate comprises a first electrode and a second electrode on its surface. The fusible element is disposed on the substrate and connects to the first electrode and the second electrode at two ends. The fusible element comprises a first metal layer and a second metal layer disposed on the first metal layer. The second metal layer has a lower melting point than that of the first metal layer. The heating element is disposed on the substrate. In the event of over-voltage or over-temperature, the heating element heats up to melt and blow the fusible element. The second metal layer is 40-95% of the fusible element in thickness.

A flexible and non-magnetic fuse that can be used in a MRI. The fuse is made up of a substrate and a first layer located upon the substrate. The first layer including a first electrical conductor material suspended within a first base material. Upon the first layer is located a second layer. This second is made up of a material that is suspended within a second base material. The second layer has a solid to liquid phase transition temperature lower than a solid to liquid phase transition temperature of a material of the first layer and the second base material intermixes with the first base material at the transition temperature the second layer.

A safety device comprises a first heat dissipation part, a second heat dissipation part and a connecting part. The connecting part is arranged between the first heat dissipation part and the second heat dissipation part, and at least one heat locking hole disposed thereon. The heat locking hole of the connecting part can reduce a diffusion speed of heat of the connecting part, so that the heat is concentrated between the first heat locking hole and the second heat locking hole, and thus the connecting part can be fused in time at a high temperature.

The present disclosure discloses a miniature super surface mount fuse, comprising: a fuse element provided with a low overload fusing point and at least two high breaking capacity fusing points connected in series with the low overload fusing point and respectively arranged on two sides of the low overload fusing point, at least two cavity plates provided with cavities, the low overload fusing point and the high breaking capacity fusing points being located at corresponding positions of the cavities; the present disclosure further provides a manufacturing method for a surface mount fuse; the miniature super surface mount fuse of the present disclosure can provide the protection for the civil consumer electronic circuit under various overload conditions without the occurrence of safety hazards such as smoking or cracking of the housing or explosion.