A fuse includes an integrated measuring function. In an embodiment, the fuse includes a fuse housing which in turn has a first receiving space delimited by a pressure body and a second receiving space which is spatially separated from the first receiving space and is delimited by a protective body, the first and second receiving spaces being arranged one behind the other in a direction of longitudinal extent. A fusible conductor is accommodated and mounted in the first receiving space and a measuring device is accommodated and mounted in the second receiving space. The measuring device has a current transformer and an electronic assembly which is electrically conductively connected to the current transformer. The current transformer and the electronic assembly are arranged one behind the other in the direction of longitudinal extent.

An improved surface mount electrical fuse including a first fuse terminal; a second fuse terminal spaced apart from the first fuse terminal; and a fuse element formed from a conductive material, the fuse element having a support bridge for supporting the fuse element, the fuse element electrically connecting the first fuse terminal and the second fuse terminal.

A circuit protection device including a housing having a top section mounted to a bottom section, a first arc barrier extending from the bottom section, a second arc barrier extending from the top section, the top and bottom sections mounted together to define a cavity between the first arc barrier separated a distance from the second arc barrier, a first terminal and a second terminal secured to the bottom section, and a fuse element comprising a body of metallic material arranged in one of a plurality of geometric configurations mounted within the top section and the bottom section of the housing, extending through the first arc barrier and the second arc barrier and connected to the first and second terminals, wherein the first and second arc barriers resist arcing upon activation of the fuse and the fuse element melts upon occurrence of an overcurrent condition.

A fuse includes an integrated measuring function. In an embodiment, the fuse includes a fuse housing which in turn has a first receiving space delimited by a pressure body and a second receiving space which is spatially separated from the first receiving space and is delimited by a protective body, the first and second receiving spaces being arranged one behind the other in a direction of longitudinal extent. A fusible conductor is accommodated and mounted in the first receiving space and a measuring device is accommodated and mounted in the second receiving space. The measuring device has a current transformer and an electronic assembly which is electrically conductively connected to the current transformer. The current transformer and the electronic assembly are arranged one behind the other in the direction of longitudinal extent.

A fuse assembly includes a casing having two slots defined through the first end thereof, and a conductive member is located in the casing and has a first end extending through the second end of the casing. The conductive member includes two blades with a fuse connected therebetween. A cap is detachably mounted to the first end of the casing and has a light member connected thereto. The light member has a leg portion which is electrically connected to a second end of the conductive member. When the fuse is burned off, the light member lights on, the cap is removed from the casing, and is detachably connected to a new casing with a functional fuse therein.

A fuse assembly includes a casing having two slots defined through the first end thereof, and a conductive member is located in the casing and has a first end extending through the second end of the casing. The conductive member includes two blades with a fuse connected therebetween. A cap is detachably mounted to the first end of the casing and has a light member connected thereto. The light member has a leg portion which is electrically connected to a second end of the conductive member. When the fuse is burned off, the light member lights on, the cap is removed from the casing, and is detachably connected to a new casing with a functional fuse therein.

A three phase surge protection device is disclosed. In an embodiment a device include a stack comprising a first varistor, a second varistor and a third varistor, wherein the varistors are electrically connected to form a circuit and a first thermal disconnect configured to interrupt the circuit when a temperature of the first thermal disconnect exceeds a predefined temperature.

Disclosed are a fuse, a fuse box, and a fuse device capable of preventing insertion of wrong products into the box or device and persistent electric arc. In certain aspects, the fuse includes a pair of electro-conductive terminals, a fuse element having a fusion portion provided between the electro-conductive terminals, and an insulating housing mounted so as to cover at least a part of the fusion portion and the electro-conductive terminals, wherein a notch is provided on a lower-end side of the insulating housing, the notch is located between the pair of electro-conductive terminals and at a position that does not interfere with the shape of the fusion portion provided between the pair of electro-conductive terminals, and the notch is formed in a manner that a protrusion provided in a fuse box for housing the fuse can be fitted therein.

Disclosed are a fuse, a fuse box, and a fuse device capable of preventing insertion of wrong products into the box or device and persistent electric arc. In certain aspects, the fuse includes a pair of electro-conductive terminals, a fuse element having a fusion portion provided between the electro-conductive terminals, and an insulating housing mounted so as to cover at least a part of the fusion portion and the electro-conductive terminals, wherein a notch is provided on a lower-end side of the insulating housing, the notch is located between the pair of electro-conductive terminals and at a position that does not interfere with the shape of the fusion portion provided between the pair of electro-conductive terminals, and the notch is formed in a manner that a protrusion provided in a fuse box for housing the fuse can be fitted therein.

Method and apparatus for mounting fuses in switchgear and similar electrical isolation equipment provide a nonconductive fuse support that allows the fuses to be mounted separately from the transformers. Two such fuse supports may be used to support a fuse, one fuse support for each fuse terminal. Each fuse support may support two fuse terminals so dual fuses may be supported by the same pair of fuse supports. The fuse supports substantially surround the fuse terminals to provide an insulating barrier that helps prevent electrical discharge and also ensure sufficient spacing between the fuse terminals and ground or other conductors in the switchgear. Such an arrangement allows the fuses and transformers to fit within a reduced space in the switchgear and similar electrical isolation equipment while complying with industry-standard performance requirements. The fuse supports are preferably noncontiguous, thereby leaving the nonconductive portion of the fuse physically unsurrounded.