The Siemens 3SF3243-0XX30-0BA1 is a communication-capable position switch in a molded-plastic block housing per EN 50047, fitted with an AS-i adapter for direct bus connection. It provides two normally-closed (NC) contacts with positive opening — the mechanical action that forces the contacts apart even if they weld, a requirement for safety circuits in machine guarding applications.
Integration & Wiring
The switch uses screw fixing for panel or machine mounting, and the electrical connection is via AS-i insulation displacement — no separate terminal block needed for the bus drop. The separate actuator (ordered separately) allows alignment flexibility on guard doors or sliding gates.