USCO Power Switches

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DESIGN CHARACTERISTICS Contacts The ASB is supplied with reverse loop, silver-to-silver jaw contacts producing the highest conductivity initially and over time. The contact fingers, fabricated from hard drawn copper, are silver plated, then electro- tin plated. The male contact, also of hard drawn copper is silver metallized and then 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 ASB are field replaceable. The ASB uses USCO’s time tested welded lamination hinge assembly producing a straight-line current path eliminating any current transfer at the hinge. This is accomplished 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 constructed 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.

S I D E B R E A K S W I T C H

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