A DIN rail device mount system includes a base, a module and a locking mechanism. The base is configured to be mounted on a DIN rail. The base defines a receiver slot. The module is configured to be removably mounted in the receiver slot to form a DIN rail mount assembly. The locking mechanism includes: a lock member having opposed proximal and distal ends and including an integral lock member latch feature on its distal end, wherein the lock member is pivotally connected to the base at its proximal end to pivot between a closed position and an open position; and an integral module latch feature on the module. The DIN rail mount system is selectively positionable in each of: a locked configuration wherein the module is seated in the receiver slot, the lock member is in the closed position, and the lock member latch feature is interlocked with the module latch feature, whereby the lock member secures the module in the receiver slot; and an unlocked configuration wherein the lock member is in the open position, the lock member latch feature is not interlocked with the module latch feature, and the module can be withdrawn from the receiver slot.

A transition assembly for interconnecting a hybrid trunk cable and electronic equipment includes: an enclosure having first and second ends, first and second side walls, and a cavity; a hybrid trunk cable comprising first and second sets of pluralities of power conductors and a plurality of optical fibers, wherein the first and second sets of power conductors enter the enclosure at the first end; first and second sets of pluralities of connectors mounted to at least one of the first and second side walls; and an overvoltage protection module (OVP module).

A transition assembly for interconnecting a hybrid trunk cable and electronic equipment includes: an enclosure having first and second ends, first and second side walls, and a cavity; a hybrid trunk cable comprising first and second sets of pluralities of power conductors and a plurality of optical fibers, wherein the first and second sets of power conductors enter the enclosure at the first end; first and second sets of pluralities of connectors mounted to at least one of the first and second side walls; and an overvoltage protection module (OVP module).

A device for dissipating a surge includes at least three metal oxide varistors (MOVs). Each of the MOVs may be positioned adjacent to each other. Each of the MOVs may have two contact surfaces. Contact surfaces of adjacent MOVs are electrically connected together. The at least three MOVs include a first outer MOV, a second outer MOV, and at least one inner MOV positioned between the first outer MOV and the second outer MOV. The first outer MOV and the second outer MOV have a greater voltage at a given current than at least one of the at least one inner MOV. The device further includes a first connector electrically coupled to at least one of the at least three MOVs. The device further includes a second connector electrically coupled to at least another of the at least three MOVs.

Disclosed in the present invention are a linkage mechanism, a base, and a surge protection device. The linkage mechanism comprises a linkage swing rod and transmission components, wherein the linkage swing rod is arranged to be rotatably connected, and is provided with a trigger portion capable of triggering a switch when rotating and at least two stress portions arranged spaced apart from each other on one side of an axis of rotation of the linkage swing rod; one transmission component is arranged corresponding to each of the stress portions; and the transmission components are arranged in such a way that any of the transmission components applies a pushing force to the stress portion to rotate the linkage swing rod, and thus the trigger portion triggers the switch. According to the surge protecting device using the linkage mechanism provided in the present invention, a module failure signal can be sent out when any surge protection module fails under the condition where only one microswitch is arranged, which not only simplifies the structure of the surge protecting device and reduces the volume, but also reduces the cost.

Disclosed in the present invention are a linkage mechanism, a base, and a surge protection device. The linkage mechanism comprises a linkage swing rod and transmission components, wherein the linkage swing rod is arranged to be rotatably connected, and is provided with a trigger portion capable of triggering a switch when rotating and at least two stress portions arranged spaced apart from each other on one side of an axis of rotation of the linkage swing rod; one transmission component is arranged corresponding to each of the stress portions; and the transmission components are arranged in such a way that any of the transmission components applies a pushing force to the stress portion to rotate the linkage swing rod, and thus the trigger portion triggers the switch. According to the surge protecting device using the linkage mechanism provided in the present invention, a module failure signal can be sent out when any surge protection module fails under the condition where only one microswitch is arranged, which not only simplifies the structure of the surge protecting device and reduces the volume, but also reduces the cost.

A protection device comprises a substrate, a fusible element and a heating element. The substrate has a surface provided with a first electrode and a second electrode. The fusible element comprises a first metal layer and a second metal layer disposed on the first metal layer. The melting temperature of the second metal layer is higher than that of the first metal layer. The fusible element connects to the first and second electrodes through solder. The solder has a melting temperature lower than that of the first metal layer. The heating element heats up to blow the fusible element in the event of over-voltage or over-temperature.

A protection device comprises a substrate, a fusible element and a heating element. The substrate has a surface provided with a first electrode and a second electrode. The fusible element comprises a first metal layer and a second metal layer disposed on the first metal layer. The melting temperature of the second metal layer is higher than that of the first metal layer. The fusible element connects to the first and second electrodes through solder. The solder has a melting temperature lower than that of the first metal layer. The heating element heats up to blow the fusible element in the event of over-voltage or over-temperature.

A surge protective device (SPD) module includes a varistor and an electrical conductor. The varistor includes a hole defined therein and extending through the varistor. The electrical conductor extends through the hole in the varistor.

A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.