The comb plate switch on an escalator is a safety device located at both the top and bottom landings of the escalator, where the moving steps transition into a stationary comb plate. The comb plate is a toothed metal plate that aligns with the grooves in the escalator steps, allowing passengers to smoothly step on or off the moving escalator. The primary function of the comb plate switch is to detect obstructions or foreign objects that may become lodged between the moving steps and the stationary comb plate. This is a critical safety feature, as such obstructions can create a tripping ha....
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