An embodiment of a fuse module has been disclosed. The fuse module includes a housing and a fuse element assembly contained within the housing. The fuse element assembly includes at least one fuse element unit having a plurality of trigger mechanisms and a perforated strip electrically connected to the trigger mechanisms. Increased ampacity ratings in a more compact arrangement provides for fuse modules having increased current protection capability that, in turn, provides for improved disconnect switching capabilities.

A multi-load fuse block, which receives insertion of at least two safety fuses therein, includes: a housing, a first surface of the housing configured with a first fuse slot and at least one second fuse slot; a conductive joint, configured on a second surface of the housing, and in electric connection with the first fuse slot; a first load conductive wire, configured on a third surface of the housing; and a second load conductive wire, configured on a fourth surface of the housing, where the first fuse slot and second fuse slot allow a plurality of safety fuses to be inserted therein or separated therefrom. The first load conductive wires and second load conductive wires of the housing can provide electric connection for automotive electronics, allowing the safety fuses to be in electric connection with more automotive electronics so as to protect them from overcurrent.

A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, an overvoltage clamping element electrically connected between the first and second module electrical terminals, and a thermal disconnector mechanism. The thermal disconnector mechanism is positioned in a ready configuration, wherein the overvoltage clamping element is electrically connected with the second module electrical terminal. The thermal disconnector mechanism is repositionable to electrically disconnect the overvoltage clamping element from the second module electrical terminal. The thermal disconnector mechanism includes: an electrode electrically connected to the overvoltage clamping element; a disconnect spring elastically deflected and electrically connected to the electrode in the ready configuration; a solder securing the disconnect spring in electrical connection with the electrode in the ready configuration; and a heat sink member thermally interposed between the electrode and the solder, the heat sink member having a thermal capacity. The solder is meltable in response to overheating of the overvoltage clamping element. The disconnect spring is configured to electrically disconnect the overvoltage clamping element from the second module electrical terminal when the solder is melted. The thermal capacity of the heat sink member buffers and dissipates heat from the overvoltage clamping element to prevent the solder from melting in response to at least some surge currents through the SPD module.

A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, an overvoltage clamping element electrically connected between the first and second module electrical terminals, and a thermal disconnector mechanism. The thermal disconnector mechanism is positioned in a ready configuration, wherein the overvoltage clamping element is electrically connected with the second module electrical terminal. The thermal disconnector mechanism is repositionable to electrically disconnect the overvoltage clamping element from the second module electrical terminal. The thermal disconnector mechanism includes: an electrode electrically connected to the overvoltage clamping element; a disconnect spring elastically deflected and electrically connected to the electrode in the ready configuration; a solder securing the disconnect spring in electrical connection with the electrode in the ready configuration; and a heat sink member thermally interposed between the electrode and the solder, the heat sink member having a thermal capacity. The solder is meltable in response to overheating of the overvoltage clamping element. The disconnect spring is configured to electrically disconnect the overvoltage clamping element from the second module electrical terminal when the solder is melted. The thermal capacity of the heat sink member buffers and dissipates heat from the overvoltage clamping element to prevent the solder from melting in response to at least some surge currents through the SPD module.

An electric potential difference between both ends of a first fuse portion is increased to more than the electric potential difference that is generated by an electric potential applied to drive print elements in a state where a first print element and a first covering portion are electrically connected to each other.

An electric potential difference between both ends of a first fuse portion is increased to more than the electric potential difference that is generated by an electric potential applied to drive print elements in a state where a first print element and a first covering portion are electrically connected to each other.

An extended protection device for a vehicle includes: a housing, three conductive wires configured therein, the three conductive wires respectively being a first conductive wire, second conductive wire and third conductive wire extended outward form one end of the housing, another end of the housing configured with a fuse slot, and a combination portion configured on the outside of the fuse slot; a protection element, constituted by two sets of safety fuses, and in corresponding combination with the fuse slot, allowing the protection element to be in electric connection with the first conductive wire, second conduction wire and third conductive wire; and a cover, covered correspondingly on the combination portion of the housing for the protection of the protection element.

A multi-load fuse block, which receives insertion of at least two safety fuses therein, includes: a housing, a first surface of the housing configured with a first fuse slot and at least one second fuse slot; a conductive joint, configured on a second surface of the housing, and in electric connection with the first fuse slot; a first load conductive wire, configured on a third surface of the housing; and a second load conductive wire, configured on a fourth surface of the housing, where the first fuse slot and second fuse slot allow a plurality of safety fuses to be inserted therein or separated therefrom. The first load conductive wires and second load conductive wires of the housing can provide electric connection for automotive electronics, allowing the safety fuses to be in electric connection with more automotive electronics so as to protect them from overcurrent.

The invention relates to a protective device (2) for an electrical circuit (1), including a first fuse (8), a pyroelectric switch (12) connected in parallel with the first fuse and comprising a control area (16), capable of receiving a trigger signal (S), and a power area (18) for the passage of the electric current. The device also comprises a control circuit configured to produce and transmit the trigger signal to the control area. The device includes a second fuse connected in series between a first input conductor (4) and the first fuse and capable of supplying a power supply voltage (V) to the control circuit, which is connected between the second fuse and the control area.

The invention relates to a protective device (2) for an electrical circuit (1), including a first fuse (8), a pyroelectric switch (12) connected in parallel with the first fuse and comprising a control area (16), capable of receiving a trigger signal (S), and a power area (18) for the passage of the electric current. The device also comprises a control circuit configured to produce and transmit the trigger signal to the control area. The device includes a second fuse connected in series between a first input conductor (4) and the first fuse and capable of supplying a power supply voltage (V) to the control circuit, which is connected between the second fuse and the control area.