The F3SG-4SRB0680-25-F is a Type 4 safety light curtain from the F3SG-SR series, rated for hand detection with a 25 mm detection capability. That 25 mm figure governs the minimum object size it reliably catches — a finger or hand reaching into the hazard zone triggers the stop signal. The 34 beams at 20 mm pitch create a 680 mm protective height, sized for guarding a single machine access point or a small conveyor opening. Operating range spans 0.3 m to 20.0 m, so it works both in tight press-brake applications and across wider automated cells. The 24 VDC supply is standard for safety circuits; the IP65/IP67/IP67G rating means the housing and optics survive washdown environments — oil-resistant and waterproof, which suits food-and-bev or machining lines where coolant spray is constant. Built-in blanking and muting functions let the curtain ignore fixed obstructions (like a workpiece fixture) or temporarily suspend detection during a material pass-through — both configurable without an external controller. Temperature range of -30°C to 55°C covers unheated warehouses and refrigerated zones.
Mounts via the standard end-bracket hardware included in the F3SG-SR family. The 680 mm column fits within a typical machine frame upright; cable exits from the bottom of the emitter and receiver. No separate controller required for basic operation — the curtain outputs a pair of OSSD signals (OSSD1 and OSSD2) that connect directly to a safety PLC or safety relay.