A disconnect/test terminal block may include a body including a front side and a back side including a protruding part. The block may include at least one circuit element disposed in the body. The block may include at least one case wire terminal disposed on the front side of the body and coupled to the at least one internal circuit. The block may include at least one field cable terminal disposed on the protruding part and coupled to the at least one internal circuit.

A terminal block for use with a railroad terminal board may include a terminal block body comprising first and second sides, a plurality of first connection posts extending from the first side of the body, and a second connection post extending from the second side of the body. The second connection post may be connected to one of the plurality of first connection posts. The second connection post may be configured to mount the terminal block to the railroad terminal board. The terminal block body may include a single hole extending through the first and second sides and configured to accept a mounting screw for mounting the terminal block to the railroad terminal board.

A connector for a circuit breaker and a downstream contactor has a one-piece configuration and facilitates an electrical connection between the circuit breaker and the downstream contactor. The connector includes at least one sensor, the connector includes an evaluation unit for measured values of the sensor, and the connector includes first contacts for the circuit breaker and second contacts for the downstream contactor, both acting in the same mating direction. A feeder for connecting a load and an arrangement having a distribution system, a load and a feeder, are also provided.

An electronic device for mounting on a support rail, has a housing, an electronic unit arranged in the housing, and an elastic contact element that serves in the electrically-conductive connection between the electronic unit and the support rail. The contact element has two contact legs, a connecting area connecting the contact legs to one another, and a contacting section connected to the connecting area for making contact with the electronic unit, and wherein when the electronic device is in the mounted state, the contact legs of the contact element make contact in a clamping manner with a leg of the support rail in-between. The contact element arranged ensures, with small size, good electrical and mechanical contacting of the support rail. The sides of the two contact legs facing one another form a short contact area. The first contact area on is sharp-edged, and the second contact area forms a swivel.

A modular distribution block for a high-current power system includes a ground module and one or more phase modules. The ground module includes a grounding clamp configured to electrically and mechanically connect to a DIN rail and to retain the distribution block in place with respect to the DIN rail. The phase module(s) include: a conductive splice block that connects a line current from a power supply to a powered device; and, a first surge protective device (SPD) terminal and a second SPD terminal configured to together receive and electrically connect to an SPD module, such connection forming a surge protection circuit within the distribution block, the first SPD terminal electrically connecting to the bus terminal and the second SPD terminal electrically connecting, to the splice block. A rigid bus bar electrically connects the ground module to the phase module(s).

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 surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, a gas discharge tube (GDT) mounted in the module housing, and a fail-safe mechanism mounted in the module housing. The GDT includes a first GDT terminal electrically connected to the first module electrical terminal and a second GDT terminal electrically connected to the second module electrical terminal. The fail-safe mechanism includes: an electrically conductive shorting bar positioned in a ready position and repositionable to a shorting position; a biasing member applying a biasing load to the shorting bar to direct the shorting bar from the ready position to the shorting position; and a meltable member. The meltable member maintains the shorting bar in the ready position and melts in response to a prescribed temperature to permit the shorting bar to transition from the ready position to the shorting position under the biasing load of the biasing member. In the shorting position, the shorting bar forms an electrical short circuit between the first and second GDT terminals to bypass the GDT.

A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, a gas discharge tube (GDT) mounted in the module housing, and a fail-safe mechanism mounted in the module housing. The GDT includes a first GDT terminal electrically connected to the first module electrical terminal and a second GDT terminal electrically connected to the second module electrical terminal. The fail-safe mechanism includes: an electrically conductive shorting bar positioned in a ready position and repositionable to a shorting position; a biasing member applying a biasing load to the shorting bar to direct the shorting bar from the ready position to the shorting position; and a meltable member. The meltable member maintains the shorting bar in the ready position and melts in response to a prescribed temperature to permit the shorting bar to transition from the ready position to the shorting position under the biasing load of the biasing member. In the shorting position, the shorting bar forms an electrical short circuit between the first and second GDT terminals to bypass the GDT.

A PV terminal assembly includes a mounting frame and at least one PV terminal. The mounting frame is provided with mounting positions used for fixing PV terminals, and there are at least two mounting positions, so that at least two PV terminals can be integrated on the mounting frame. The number of PV terminals on the whole PV terminal assembly can be adjusted by adjusting the number of PV terminals on the mounting frame. An electrical device includes the PV terminal assembly.

A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, a gas discharge tube (GDT) mounted in the module housing, and a fail-safe mechanism mounted in the module housing. The GDT includes a first GDT terminal electrically connected to the first module electrical terminal and a second GDT terminal electrically connected to the second module electrical terminal. The fail-safe mechanism includes: an electrically conductive shorting bar positioned in a ready position and repositionable to a shorting position; a biasing member applying a biasing load to the shorting bar to direct the shorting bar from the ready position to the shorting position; and a meltable member. The meltable member maintains the shorting bar in the ready position and melts in response to a prescribed temperature to permit the shorting bar to transition from the ready position to the shorting position under the biasing load of the biasing member. In the shorting position, the shorting bar forms an electrical short circuit between the first and second GDT terminals to bypass the GDT.