Core Features Roller Lever Actuation for Low-Wear Detection: Functions as a single-pole, double-throw (SPDT) basic limit switch designed for sensing linear or rotational motion in light-to-medium industrial applications. It features a spring-loaded rotary lever with a wear-resistant nylon roller—the roller minimizes friction and mechanical abrasion when interacting with moving parts (e.g., metal slides, plastic workpieces, or conveyor belts). This design makes it ideal for frequent-actuation scenarios (up to 15 cycles per minute), such as assembly line part alignment, machine slide end-stop monitoring, or product positioning. Standard Industrial Electrical Ratings: Rated for AC 230V (50/60Hz) and DC 24V (the most common industrial control voltages), with a maximum switching current of 5A (resistive load) and 2A (inductive load). The SPDT configuration (1 normally open/NO + 1 normally closed/NC contact) supports flexible control logic: for example, using the NO contact to send a “position reached” signal to a PLC (e.g., Siemens S7-1200), or the NC contact to interrupt a low-power control circuit (e.g., for a small relay or indicator light). Durable & Compact Construction: Housed in an impact-resistant thermoplastic (ABS) enclosure (UL94 V-0 flame-retardant rating) with a zinc-plated steel lever shaft. The enclosure’s compact dimensions (62mm × 38mm × 30mm) save space in tight installations (e.g., between machine components or inside control cabinets), while the sealed internal structure protects contacts from dust, oil, and light moisture. It meets IP65 protection (IEC 60529) to withstand low-pressure water jets and dust ingress—suitable for manufacturing floors, packaging lines, or workshop equipment. Reliable Actuation & Reset: The lever rotates 90° to trigger contact actuation, with a stable return spring force (3.5N) ensuring consistent performance even after repeated use (≥1 million mechanical operations). The nylon roller reduces wear on both the switch and the contacted part (e.g., delicate plastic components or thin metal sheets), extending the service life of both the switch and the machinery. Additionally, the lever’s moderate length (50mm from housing to roller) provides a balanced contact area, improving detection accuracy for irregularly shaped workpieces. Simplified Installation & Wiring: Supports surface mounting via integrated M4 screw holes, with a low-profile design that avoids interfering with moving machinery. The terminal block uses screw connections for 0.2–1.5mm² wires (solid or stranded), with clear labeling (NO/NC/Common) to reduce wiring errors. The switch also includes a removable actuator cap for custom labeling (e.g., “End Stop” or “Product Detect”), enhancing operator clarity in complex control setups. Global Basic Safety Compliance: Meets essential industrial standards including IEC 60947-5-1 (low-voltage switches for control circuits), UL 508 (industrial control equipment), and CSA C22.2 No. 14. It complies with basic machinery safety guidelines (EN ISO 13849-1, Category 1) for non-critical position monitoring, making it a cost-effective choice for applications where high safety redundancy (e.g., forced-guided contacts) is not required. Typical Applications The Siemens Switch 3SE3100-0B is engineered for light-to-medium duty position sensing in industrial environments, with core use cases including: Machine Slide End-Stop Control: Installed at the travel limits of small-to-medium machine slides (e.g., CNC lathe tool turrets, 3D printer build plates, or automated assembly arms). When the slide reaches the roller lever, the NC contact interrupts the control circuit, stopping movement and preventing overtravel damage to precision components. Conveyor Product Detection: Deployed on lightweight to medium-duty conveyors (e.g., those handling electronics components, packaged goods, or automotive parts) to detect product presence. The NO contact triggers a signal to the conveyor controller, enabling actions like speed adjustment, product sorting, or stop/start cycles—reducing manual intervention and improving line efficiency. Packaging Line Alignment: Used in packaging machinery (e.g., filling machines, sealing equipment, or label applicators) to confirm that packages are properly aligned before processing. If a package is misaligned, it fails to actuate the lever, and the NC contact pauses the line to prevent defective packaging—minimizing waste and rework. Door & Gate Status Monitoring: Mounted on the access doors or safety gates of non-critical machinery (e.g., storage cabinets, auxiliary equipment enclosures, or manual workstations) to monitor open/closed status. The switch sends a signal to a HMI or indicator light, alerting operators if a door is left open during operation—reducing dust ingress or accidental contact risks. Benchtop Equipment Control: Integrated into benchtop tools (e.g., small drills, routers, or laser engravers) to monitor the position of moving parts (e.g., drill bits or engraving heads). The switch ensures the tool stops if the part moves beyond its safe range, reducing the risk of equipment damage or operator injury in workshop settings.