Ametek Gemco 1950-1 Handbuch - Seite 3
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ELECTRICAL CONTACTS
The welded silver cadmium oxide contacts provide the following advantages: (1) High electrical conductiv-
ity, (2) Excellent resistance to sticking contacts, (3) Minimum electrical erosion. The presence of cadmium
oxide gives high arc quenching characteristics of cadmium without a reduction of high conductivity of fine
silver. This is because the cadmium oxide remains as discrete particles throughout the silver base and each
exhibits its own physical characteristics.
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APPLICATION NOTE
The N.O. and N.C. contacts of the single pole, double throw snap on circuits of the same snap switch has
two poles, which can be used on opposite polarities. The N.O. and N.C. circuit of each pole of the two
pole snap switch, however, must be used on the same polarity.
DIRECTION OF ROTATION
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