Schneider Electric NSB 2510AF21 Limit Switches

Schneider Electric's Square D 2510AF21 Limit Switches, EA-series, are legacy industrial limit switches designed for end-of-travel sensing in control panels and machinery, delivering a compact electromechanical method to signal a machine's position to a control system. The part number 2510AF21 identifies this EA-series device within the Square D catalog, and distributor listings consistently refer to it as Square D 2510AF21 EA limit switches, establishing its identity across suppliers. Current catalogs and distributor references indicate this specific SKU is discontinued, meaning it is no longer part of Schneider Electric's active lineup, which is important for compatibility checks in legacy installations. In typical operation across industrial controls, limit switches translate mechanical actuation into electrical signals that can drive PLC inputs, relays, or interlocks to detect end-of-travel and prevent over-travel in automation systems. As the parent company of Square D, Schneider Electric maintains historical references for legacy parts like 2510AF21 in its product literature, even after active status has ended.