Allen-Bradley Z-19243 Limit Switch Head

The Allen‑Bradley Z‑19243 Limit Switch Head is the operating head component designed to mate with a 2‑pole horizontal switch base to form a complete Allen‑Bradley limit switch assembly. This head provides the mechanical‑to‑electrical actuation interface: when the attached actuator is depressed or released, the internal contacts change state to signal end‑of‑travel or interlock conditions in automated equipment. The Z‑19243 designation identifies a replaceable head unit that pairs with the corresponding base in Rockwell Automation’s limit switch family, enabling field replacement without replacing the entire switch body. Typical applications include end‑of‑travel sensing on conveyors and presses, position monitoring in automated lines, and safety interlocks where reliable, repeatable actuation is required. As part of Allen‑Bradley’s modular limit switch systems, the Z‑19243 head shares the same mounting geometry and actuator interface used across compatible bases, ensuring straightforward integration with existing AB installations.