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Electrical specifications include current carrying capacity, current rating and voltage rating. Current carrying capacity, measured in amps, is the maximum load that a switch will carry when the contacts are in a closed position. Current and voltage ratings are the tested amperage and voltage capacity when switching contact positions under load. An electrical arc occurs when switching between positions under load which over a period of time will cause contact wear. A switch with the contacts closed has no arc, and the carrying capacity is higher.
PTM Published on: 2011-10-27
