Limit Switches Explained: NO, NC & Changeover Contact Configurations
Quick answer: Limit switches use three main contact configurations — Normally Open (NO), Normally Closed (NC), and Changeover (SPDT) — to control circuits based on mechanical actuation. NO contacts stay open until triggered, NC contacts stay closed until triggered, and changeover contacts switch between two circuit paths simultaneously. Choosing the right configuration depends on your […]
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