What this light curtain delivers on the line
The F3SG-4SRA0800-25 is a 25 mm detection-capability safety light curtain from the F3SG-SR series, sized for hand protection with a 800 mm protective height across 40 beams at 20 mm pitch. Rated operating range spans 0.3 m to 20.0 m, powered by 24 VDC, with an IP65/IP67/IP67G enclosure that's dust-tight, water-resistant, and oil-resistant — suitable for washdown zones in food or automotive lines. Built-in blanking and muting functions let you configure fixed or floating blanking around fixtures and mute the curtain during material pass-through, reducing nuisance trips without external bypass modules.
The 25 mm detection capability is the key selection parameter — it's rated for hand protection per IEC 61496, meaning it catches a 25 mm test rod anywhere in the field. That's the spec you match to your risk assessment's minimum object sensitivity. 800 mm protective height covers a typical reach-through zone for a standing operator at a machine access point. The 20 mm beam pitch gives 40 beams, which means no gaps larger than 20 mm between beams — finer than the 25 mm detection capability requires, adding margin. Operating range of 0.3 m to 20.0 m covers both close-in guarding (under 1 m) and long-perimeter applications. The 24 VDC supply is standard for safety circuits; verify your safety relay or controller can source the current for the emitter-receiver pair. IP65/IP67/IP67G means the housing handles hose-down cleaning and temporary submersion; the 'G' suffix indicates oil resistance, which matters in machining or hydraulic areas where coolant mist is present.