A thermomagnetic trip assembly includes a thermal trip, a magnetic trip, and first and second actuation levers. The thermal trip includes a bimetal strip that is capable of deforming in order to actuate the first actuation lever. The magnetic trip includes a movable armature, a fixed armature and an electrical conductor. The movable armature is capable of moving in order to actuate the second actuation lever. The electrical conductor and the bimetal strip are electrically connected in series with one another between first and second connection terminals of the trip assembly. The movable armature is connected to the first connection terminal, the fixed armature is connected to the second connection terminal, and the respective contact areas of the fixed armature and of the movable armature are made of electrically conductive materials that exhibit a low degree of mutual weldability.

Various embodiments disclosed relate to an alloy. The alloy includes elemental silver. The alloy further includes a metal oxide phase in the elemental silver. The metal oxide phase includes a wetting agent layer that coats the metal oxide phase.

Various embodiments disclosed relate to an alloy. The alloy includes elemental silver. The alloy further includes a metal oxide phase in the elemental silver. The metal oxide phase includes a wetting agent layer that coats the metal oxide phase.

Various embodiments disclosed relate to an alloy. The alloy includes elemental silver. The alloy further includes a metal oxide phase in the elemental silver. The metal oxide phase includes a wetting agent layer that coats the metal oxide phase.

Various embodiments disclosed relate to an alloy. The alloy includes elemental silver. The alloy further includes a metal oxide phase in the elemental silver. The metal oxide phase includes a wetting agent layer that coats the metal oxide phase.

The present invention is a clad material for an electric contact, including a base material composed of a Cu-based, precipitation-type age-hardening material, and a contact material composed of an Ag alloy bonded to the base material. On a bonded interface between the contact material and the base material, a width of a diffusion region including Ag and Cu is 2.0 m or shorter. The clad material is produced by bonding each other the contact material and the base material having undergone solutionizing and age-hardening beforehand, suppressing the diffusion region from expanding after bonding. The present invention is capable of providing an electric contact, which achieves higher conductivity, without sacrificing property of the Cu-based, precipitation-type age-hardening material.

A surge suppression system provides surge protection both locally within the radio station building were the power plant and telecommunication equipment are located and remotely next to the radios and antennas located outside of the building on the communication tower. An external surge suppression unit provides a waterproof enclosure for both surge suppression devices and fiber optic connectors. A rack mountable surge suppression unit provides local in-line surge suppression protection for the electrical equipment located in the communication station. A unique surge suppression tray is hot swappable so that multiple surge suppression devices can be replaced at the same time without disrupting radio operation. Pluggable surge suppression modules can be used in both the external surge suppression unit and the rack mountable surge suppression unit.

The invention disclosed is a knife blade switch 2 having copper jaws 10 and a copper blade 4 with a steel end-plate 6 fastened to the free end of the blade, the steel end-plate having a higher resistivity than the resistivity of the copper blade and copper jaws. As the copper blade is withdrawn from the copper jaws, the steel end-plate of the blade remains in contact with a higher resistivity steel jaw-spring mounted on and electrically connected to the copper jaws. The connection of the steel end-plate 6 of the blade with the steel jaw-spring 12 imposes a greater resistance path for the current flowing through the switch than through the copper blade 4 and copper jaws 10, so that an arc formed at the plate and jaw-spring has a diminished current, over what would otherwise occur with a copper blade and jaws, when the contact separation occurs.

The invention disclosed is a knife blade switch 2 having copper jaws 10 and a copper blade 4 with a steel end-plate 6 fastened to the free end of the blade, the steel end-plate having a higher resistivity than the resistivity of the copper blade and copper jaws. As the copper blade is withdrawn from the copper jaws, the steel end-plate of the blade remains in contact with a higher resistivity steel jaw-spring mounted on and electrically connected to the copper jaws. The connection of the steel end-plate 6 of the blade with the steel jaw-spring 12 imposes a greater resistance path for the current flowing through the switch than through the copper blade 4 and copper jaws 10, so that an arc formed at the plate and jaw-spring has a diminished current, over what would otherwise occur with a copper blade and jaws, when the contact separation occurs.

There is provided a silver-plated product wherein a surface layer of silver is formed on the surface of an underlying layer of nickel formed on a base material, the silver-plated product having a good bendability. In a silver-plated product which comprises a base material of copper or a copper alloy, an underlying layer of nickel formed on the base material, and a surface layer of silver formed on the surface of the underlying layer, the surface layer having a thickness of 10 m or less, the thickness of the underlying layer is 2 m or less, preferably 1.5 m or less, and the area fraction in {200} orientation of the surface layer is 15% or more, preferably 25% or more.