Motion-triggered contact insufficiency

Motion-triggered contact insufficiency (MTCI) describes the effect of increased contact resistance occurring during or after mechanical stress or movement of an electrical contact system, sometimes appearing after a considerable amount of use, independent of electric current, difficult to detect due to temporary nature.

It covers effects related to:

fretting corrosion, a wear-off of the contacting surface
passivation
rolling of contacts
contamination

Switches
Analogue switch Banyan switch Battery isolator Cam switch Centrifugal switch Company switch Contact protection Crossbar switch Crossover switch Cryotron DIP switch Dry contact Electric switchboard Float switch Half-moon switch Humidistat Infinite switch Inertial switch Kill switch Key switch Knife switch Limit switch Latching switch Light switch Lightning switch Magnetic proximity fuze Magnetic starter Magnetic switch Mercury switch Miniature snap-action switch Motion-triggered contact insufficiency Optical switch Photoswitch Piezo switch Placebo button Pull switch Push switch Push-button Reed switch Rotary switch Sail switch Sea switch Silicone rubber keypad Softswitch Spark gap Staircase timer Stepping switch Time switch Touch switch Transfer switch Vacuum switch Vandal-resistant switch Wireless light switch Zero speed switch

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