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Using solid state switching technology offers numerous advantages versus other switching solutions, such as electromechanical relays. Solid state relays and contactors have no moving parts that wear out so they offer considerable longer life. The typical life expectancy of a solid state relay may be more than 50 times that of an electromechanical relay which makes them ideal for repetitive applications. Solid state switching solutions make no acoustical noise when the output contacts change states which makes them desirable for many commercial and medical applications. Low power consumption is another clear advantage. Solid state relays and contactors require very little input power "coil current" to switch large loads. Crydom solid state relays can switch up to 150A load current with less than 15mA current draw from the control input. Solid state relays have proven to be a reliable switching solution and not susceptible to erratic operation even when operating under tough environments with high levels of movement and vibration. Solid state relays high level of compatibility with control systems and fast switching capability are among some of the other advantages.
