AGASTAT EMS18AB20U Rotary Stepping Switch

AGASTAT EMS18AB20U Rotary Stepping Switch, part of the AGASTAT family, is an 18-position rotary switch that mechanically steps through 18 discrete contacts to connect a common input to a single output at each shaft position. This 18-position stepping device is used in industrial control and instrumentation applications where deterministic, contact-based routing is preferred over solid-state logic, enabling straightforward path selection across multiple circuits without digital sequencing. The EMS18AB20U model represents an 18-position arrangement in the EMS series, reflecting AGASTAT’s long‑standing AGASTAT approach to precision, maintenance-friendly switching in automation environments. Because it relies on physical contacts, it provides inherent electrical isolation between circuitry and a clear, auditable state for each shaft position, supporting sequencing, channel selection, or diagnostic routing in legacy control panels and equipment. With the EMS18AB20U, technicians can implement simple, reliable signal routing in environments that favor robust, field-replaceable components with a proven track record in industrial settings.