The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. By way of example, an arc quenching medium-free region is formed in the housing such that the at least one fusible conductor is exposed, and a mechanical disconnection element can be introduced into the arc quenching medium-free region via an access point in the housing in order to mechanically destroy the at least one fusible conductor depending on the trigger device, and independently of its melting integral.

A protection element includes a first electrode (1), a second electrode (2) having a spring property, and a fuse element material (3) that is disposed between the first electrode and the second electrode, in which the fuse element material (3) is supported by being interposed between the first electrode (1) and the second electrode (2) in a bent state.

Provided are a fuse and a circuit system. The fuse includes: a housing, a closed chamber being provided in the housing and being filled with an arc extinguishing filler, and a first conductive terminal and a second conductive terminal which are used as a current input end and a current output end being respectively connected to the housing; a melt which is connected in series between the first conductive terminal and the second conductive terminal, at least part of the melt being disposed through the closed chamber; and an impact apparatus, which is arranged in the housing, is positioned outside the closed chamber, and is configured to act, when receiving an excitation signal, on the melt to generate an impact force to make the melt break in the closed chamber.

A protection element includes a first electrode (1), a second electrode (2) having a spring property, and a fuse element material (3) that is disposed between the first electrode and the second electrode, in which the fuse element material (3) is supported by being interposed between the first electrode (1) and the second electrode (2) in a bent state.

Provided is a protecting device that can prevent damage of the device by releasing the pressure inside the housing by providing openings in the housing and can secure appropriate insulation. The protecting device includes: a meltable conductor 3; first and second external connection terminals 7, 8 connected to both ends of the meltable conductor 3; and a housing 6 having a lower case 4 and an upper case 5, wherein one end of the first external connection terminal 7 and one end of the second external connection terminal 8 are led out from the housing 6, and the housing is provided with a first opening 24 formed facing a front surface of the first external connection terminal 7 and a second opening 25 formed facing a front surface of the second external connection terminal 8.

The invention relates to a lightning protection spark gap assembly. The lightning protection spark gap assembly comprises: a lighting protection spark gap (1) having a first main connection (1a) and a second main connection (1b), wherein a first voltage line (S1) of a supply network can be connected to the first main connection (1a) and a second voltage line of the supply network can be connected to the second main connection (1b); a safety fuse device (8) which can be triggered and which can be connected between the first or second voltage line (S1, S2) and the corresponding main connection (1, 1b) of the lightning protection spark gap (1), wherein at least one current path (TS) leading via the lighting protection spark gap (1) can be formed between the first voltage line (S1) and the second voltage line (S2) during operation; an indicator device (I) for detecting a current flow in the current path (TS) or a corresponding portion of the current flow in the current path (TS) and for mechanically or electrically delayed triggering of the safety fuse device (8) if the detected current flow in the current path (TS) or the corresponding portion of the current flow in the current path (TS) fulfills a predefined criterion.

An active/passive fuse module including a base, a busbar disposed on a top surface of the base and including a fuse element and first and second terminal portions extending from opposite ends of the fuse element, the fuse element extending over a cavity in the top surface of the base, a pyrotechnic interrupter (PI) disposed atop the base, the PI including a piston disposed within a shaft above the fuse element, a first pyrotechnic ignitor coupled to a controller, the first pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads, the second pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

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.

An active/passive fuse module including a base, a busbar disposed on a top surface of the base and including a fuse element and first and second terminal portions extending from opposite ends of the fuse element, the fuse element extending over a cavity in the top surface of the base, a pyrotechnic interrupter (PI) disposed atop the base, the PI including a piston disposed within a shaft above the fuse element, a first pyrotechnic ignitor coupled to a controller, the first pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon receiving an initiation signal from the controller, and a second pyrotechnic ignitor coupled to the busbar by a pair of leads, the second pyrotechnic ignitor configured to detonate and force the piston through the fuse element upon an increase in voltage across the leads.

The disclosure relates to an energy supply apparatus for the overcurrent-protected electric power supply to an electric consumer, including a power supply device configured to provide an electric current for the electric consumer, and a controllable power protection element configured to disable a supply of electric current to the electric consumer when the electric current reaches a first current limit value, wherein the controllable power protection element comprises an adjustable second current limit value set by the power supply device, wherein the power supply device receives an increased power requirement of the electric consumer within a time interval and to control the controllable power protection element for a duration of the time interval to set the second current limit value, and wherein the controllable power protection element disables the supply of the electric current to the electric consumer upon reaching the second current limit value by the electric current.