USCO Power Switches

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DESIGN CHARACTERISTICS Contacts The AGCH5 is supplied with line-high pres- sure silver-to-silver jaw contacts producing the highest conductivity initially and over time. The contact fingers, fabricated from hard drawn copper, are silver metallized and elec- tro-tin plated. The male contact, also of hard drawn copper, has a brazed silver overlay and is electro-tin plated. These methods and materials used in the application of the silver provide surfaces of differing hardness with anti-galling properties, resulting in minimal wear over years of operation. All contacts on the AGCH5 are field replace- able. The AGCH5 uses USCO’s time tested welded lamination hinge assembly producing a straight-line current path eliminating any current transfer at the hinge. This is accom- plished with a welded aluminum laminated conductor that is used to create a bypass at the hinge. This eliminates the need for bolted or sliding pressure connections, or high pressure contacts, and enables ease of operation. The welded connections create a single metallic path from the hinge terminal pads to the main contacts on the blades of the switch. The laminated conductor is con- structed of commercially pure aluminum strip, which does not work harden during operation.

Blade The blade is constructed of heat-treated aluminum tubing with heat-treated aluminum castings welded to hinge and jaw ends. Blade Mechanism The center break design of the AGCH5 allows for better weight distribution of the blade assemblies providing excellent opera- tional performance. The center break design increases rigidity of the blades while de- creasing probability of contact misalignment, especially with higher rated switches. The two insulator configuration decrease cost while providing a simple field friendly instal- lation.

C E N T E R B R E A K

ACCESSORIES • Grounding switches: Through 100kA momentary • Auxiliary switches: Up to 12 contact decks are standard • Standard arcing horns are installed on all switches • Outriggers: Custom designed for your application • Connectors: Available on all switch types

HUBBELL / USCO  – LEEDS, ALABAMA USA

SEPTEMBER 2013