Abstract

A surface mount fuse and fuse element thereof are disclosed. The fuse element has a lead-free flat fuse, a flux layer, and a porous metal layer. The porous metal layer is bonded on one surface of the lead-free flat fuse through the flux layer. A part of the flux layer penetrates into the porous metal layer through capillary action, so the flux fills the pores of the first porous metal layer to distribute on the lead-free flat fuse evenly. When overcurrent occurs in the current loop and high temperature occurs, the flux layer helps the porous metal layer and the lead-free flat fuse to melt effectively, thereby interrupting the current loop in time.

IPC Classes  ?

• H01H 85/06 - Fusible members characterised by the fusible material
• H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
• H01H 85/143 - Electrical contactsFastening fusible members to such contacts

Abstract

A lightweight industrial fuse has a housing and a conductive fuse. The housing has a first plastic half-housing and a second half-housing combined with each other. The conductive fuse is integrally formed and clamped between the first and second half-housing. The conductive fuse has a fusible body and two intermediary portions disposed within the housing, and two electrode portions exposed from two opposite ends of the housing. Thus, an enclosed accommodation cavity of the housing is defined through the combination of the first and second half-housing. A manufacturing process is simplified, and a manufacturing cost is decreased, and further a weight of the industrial fuse is effectively reduced.

IPC Classes  ?

• H01H 85/17 - Casings characterised by the casing material
• H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
• H01H 85/143 - Electrical contactsFastening fusible members to such contacts
• H01H 85/175 - Casings characterised by the casing shape or form

Abstract

The present invention relates to a protection element having a cover. The protection element has a base and a cover. The base has a low melting point alloy layer. The cover has a receiving recess and a guiding passage. The guiding passage corresponds to a melting area of the low melting point alloy layer. The flux is arranged on the accommodating groove of the cover body. When the flux is melted, the flux flows to the guiding passage so that the flux is kept on the melting area of the low melting point alloy layer. Therefore, it is only necessary to place the flux in the receiving recess during manufacture, which can effectively reduce the manufacturing steps and thus reduce the production cost.

IPC Classes  ?

• H01H 85/055 - Fusible members
• H01H 85/165 - Casings
• H01H 85/143 - Electrical contactsFastening fusible members to such contacts

Abstract

An easy-to-assemble fuse has a fusible body, a socket, and a cover. The fusible body is engaged with the socket. The cover is covered on the socket and the fusible body and is engaged with the socket. By the engagement between the fusible body and the socket and the engagement between the socket and the cover, the fuse achieves the purpose of fast alignment and positioning. The fuse can be quickly assembled during the manufacturing process, thereby simplifying the manufacturing process, and reducing the production cost.

IPC Classes  ?

• H01H 85/175 - Casings characterised by the casing shape or form
• H01H 85/044 - General constructions or structure of low voltage fuses, i.e. below 1,000 V, or of fuses where the applicable voltage is not specified
• H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
• H01H 85/47 - Means for cooling
• H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type

Abstract

An airtight surface mount fuse with a cavity has a housing, a conductive fuse, a cover and an encapsulant. The housing has an opening and an airtight inner space. The fusible element has a part disposed inside of the airtight inner space and another part exposed from the opening. The cover is configured to fit into the opening. The encapsulant encapsulates the housing, the cover and a segment of the exposing part of the fusible element. The other segment of the fusible element is exposed from the encapsulant. The inner space of the housing is encapsulated by the encapsulant and becomes airtight. The fusible element is disposed inside of the airtight inner space to prevent the hazard occurring from arc spark interacting with flammable gases when a fusible body of the fusible element is fused. It also ensures the fusible body is affected by the external environment.

IPC Classes  ?

• H01H 85/175 - Casings characterised by the casing shape or form
• H01H 85/055 - Fusible members

Goods & Services

fuse wire; electrical fuses; electric resistors; rectifiers; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electric current; electric connectors; circuit breakers; electric circuit interrupters; electric fuse boxes; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; voltage surge suppressors; electric current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; electrical current overload protector devices; voltage surge protectors

Goods & Services

fuse wire

Goods & Services

fuse wire; fuses; electric resistors; rectifiers; electric apparatus for commutation; electric connectors; circuit breakers; electric circuit interrupters; fuse holders; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; surge absorbers; current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; current overload protectors; voltage surge protectors.

Goods & Services

fuse wire; fuses; electric resistors; rectifiers; electric apparatus for commutation; electric connectors; circuit breakers; electric circuit interrupters; fuse holders; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; surge absorbers; current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; current overload protectors; voltage surge protectors.

Goods & Services

fuse wire; fuses; electric resistors; rectifiers; electric apparatus for commutation; electric connectors; circuit breakers; electric circuit interrupters; fuse holders; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; surge absorbers; current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; current overload protectors; voltage surge protectors.

Goods & Services

fuse wire; fuses; electric resistors; rectifiers; electric apparatus for commutation; electric connectors; circuit breakers; electric circuit interrupters; fuse holders; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; surge absorbers; current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; current overload protectors; voltage surge protectors.

Goods & Services

fuse wire; fuses; electric resistors; rectifiers; electric apparatus for commutation; electric connectors; circuit breakers; electric circuit interrupters; fuse holders; surge protectors; voltage stabilizers; electrical power supplies; chargers for batteries; surge absorbers; current shunts; surge protection apparatus; electric current control devices; uninterruptible electrical power supplies; current overload protectors; voltage surge protectors.

Abstract

A protective element has a body, an inner connection layer, an outer connection layer, a heating layer and a low-melting-point alloy layer. The body is made of a single insulation material. The inner and outer connection layers are formed on two upper and lower surfaces of the body. The low-melting-point alloy layer is formed on the upper surface of the body and is electrically connected to the inner connection layer. The heating layer is mounted inside the body and is electrically connected to the low-melting-point alloy layer by the inner connection layer. The outer connection layer is electrically connected to the low-melting-point alloy layer and the heating layer. The outer connection layer is soldered on a power circuit. When the power circuit encounters overcurrent, the heating layer is heated to fuse the low-melting-point alloy layer faster. Thus, power circuit is cut to protect the power circuit.

IPC Classes  ?

• H01H 69/02 - Manufacture of fuses
• H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
• H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details

Abstract

A fuse includes a tubular body having two ends each having a first cap, which is formed with a through hole; a fusible and breakable unit including a first fusible filament arranged inside the tubular body and having two ends extending outward through the through holes respectively; and a plurality of second caps each of which has a surface that is formed with a recessed part and an opposite surface that is provided with a conductive wire. The recessed parts of the second caps are mounted to outer circumferences of the first caps. The two ends of the first fusible filament are respectively coupled between the first caps and the second caps corresponding thereto so as to extend a distance between the two ends of the first fusible filament and thus, preventing the occurrences of electrical arc after the first fusible filament is fused and broken.

IPC Classes  ?

• H01H 85/38 - Means for extinguishing or suppressing arc
• H01H 85/055 - Fusible members
• H01H 85/165 - Casings
• H01H 85/143 - Electrical contactsFastening fusible members to such contacts

Abstract

An anti-surge winding fusible resistor fuse includes: a first column, in combination with a first cap, a first fuse wire wound around the first column at intervals and in combination with the first cap; a second fuse wire, coated on a second column in combination with the first column; a first ring, configured on a contact of the first column with the second fuse wire, and the first fuse wire in combination with the first ring; an insulation body, in combination with the second fuse wire; a third column, in combination with the insulation body and a second cap, a third fuse wire wound around the third column at intervals and in combination with the second cap; and a second ring, covered on the second fuse wire, insulation body and third column, and the third fuse wire in combination with the second ring.

IPC Classes  ?

• H01H 85/048 - Fuse resistors
• H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
• H01F 27/40 - Structural association with built-in electric component, e.g. fuse
• H01C 3/14 - Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding

Abstract

A fuse line fixing structure of a fuse includes a base having first and second support sections. The first support section has two sides each forming a first wing and a first concave surface is formed between the first support section and the first wings. First and second electrodes are respectively arranged at two ends of the base. The first electrode includes a first curved plate arranged between the first support section and the first wings. The first curved plate has a convex engagement surface positioned against the first concave surface and a concave engagement surface facing toward an upper side of the first concave surface. The fuse line straddles between the first and second support sections and has an outer circumferential surface in mutual contact, through surface to surface engagement, with the concave engagement surface of the first curved plate.

IPC Classes  ?

• H01H 85/22 - Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
• H01H 85/044 - General constructions or structure of low voltage fuses, i.e. below 1,000 V, or of fuses where the applicable voltage is not specified
• H01H 85/143 - Electrical contactsFastening fusible members to such contacts
• H01H 85/20 - Bases for supporting the fuseSeparate parts thereof