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What is a logic level contact block on a pushbutton?

Logic level contact blocks are used for PLC or PC applications where low voltage and current signals are used as inputs to other devices.  In the 10250T family the logic level contact blocks utilize palladium knife-blade contacts which is a metal that is more inert than gold.  If your amps and volts will approach zero, it is reccommended that you use these types of contact blocks.  They carry a maximum amperes rating of 0.5amps.