Triggered fuse for low-voltage applications

A triggerable melting fuse for protecting one or more devices that are connectable to a power supply system 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 at least one fusible conductor in the event of malfunctions or overload states of the connected one or more devices, wherein an extinguishing medium is introduced into the housing,

• wherein the at least one fusible conductor has a plurality of electrical bottlenecks, which are designed for a rated load of the triggerable melting fuse,
• wherein at least one further additional geometric bottleneck is provided, which is disconnectable by rupturing depending on the trigger device when applied by tension,
• wherein the at least one further additional geometric bottleneck despite the smaller cross-section at identical current load will not respond before the plurality of electrical bottlenecks at all current loads, but will respond in a time-delayed manner or at higher loads, and
• wherein the at least one fusible conductor, when not being ruptured, has an angled area with respect to a length axis of the at least one fusible conductor, the angled area being adapted to be bent when the at least one further additional geometric bottleneck of the at least one fusible conductor is being ruptured.

A triggerable melting fuse for protecting one or more devices that are connectable to a power supply system 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 at least one fusible conductor in the event of malfunctions or overload states of the connected one or more devices, wherein an extinguishing medium is introduced into the housing,

• wherein the at least one fusible conductor has a plurality of electrical bottlenecks, which are designed for a rated load of the triggerable melting fuse,
• wherein at least one further additional geometric bottleneck is provided, which is disconnectable by rupturing depending on the trigger device when applied by tension,
• wherein the at least one further additional geometric bottleneck despite the smaller cross-section at identical current load will not respond before the plurality of electrical bottlenecks at all current loads, but will respond in a time-delayed manner or at higher loads, and
• wherein the trigger device controls an actuator, the actuator being comprised of a piston, the movement of which is triggered by a bridge igniter, wherein the bride igniter is situated in a hollow space and is surrounded by a projectile, which is guided in a piston, and
• wherein the at least one fusible conductor is clamped under pressure between a conical area of the projectile and a further conical part of the projectile.