Omron F3SG-4SRA0400-25 Safety Light Curtain
The Omron F3SG-4SRA0400-25 Safety Light Curtain combines 25 mm hand detection with a 400 mm protective height for industrial machine safeguarding applications. A protective field formed by 20 infrared beams with a 20 mm beam gap monitors hand intrusion through the guarded machine opening. The unit operates from 24 VDC and provides PNP/NPN safety outputs for connection with compatible machine safety equipment. Its 400 mm protective height provides localized vertical coverage while maintaining the hand-detection characteristics of this F3SG configuration. The F3SG-4SRA0400-25 identifies this model within the F3SG-SR Series. It belongs to the wider hand detection safety light curtain range associated with Omron machine safeguarding products.

| Brand | Omron |
| Product | Safety Light Curtain |
| Model Number | F3SG-4SRA0400-25 |
Omron F3SG-4SRA0400-25 Safety Light Curtain - Technical Specifications
| Specification | Value |
|---|---|
| Application | Hand protection |
| Object Resolution | Opaque objects |
| Detection Capability | 25-mm dia |
| Beam Gap | 20 mm |
| Number Of Beams | 20 Beams |
| Protective Height | 400 mm |
| Lens Size | 6.7 × 4.5 mm (W × H) |
| Operating Range | 0.3 to 20.0 m, 0.3 to 7.0 m |
| Light Source | Infrared LEDs, Wavelength: 870 nm |
| Startup Waiting Time | 3 s max. |
| Power Supply Voltage | SELV/PELV 24 VDC±20% (ripple p-p 10% max.) |
| Current Consumption | Emitter: 79 mA max.; Receiver: 119 mA max. |
| Safety Outputs Ossd | PNP/NPN |
| Degree Of Protection | IP65 and IP67 |
| Net Weight | 1 kg |
The Omron F3SG-4SRA0400-25 is a F3SG Safety Light Curtain designed for use in machine guarding, access protection, and point-of-operation safety around conveyors, presses, and automated lines. It is usually evaluated together with related models such as Omron F3SG-4RA1070-30 (Hand and arm protection, 20 mm beam gap, 52 beams, 1070 mm protective height), Omron F3SG-4RA1470-30 (Hand and arm protection, 20 mm beam gap, 72 beams, 1470 mm protective height), and Omron F3SG-4RA0510-30 (Hand and arm protection, 20 mm beam gap, 24 beams, 510 mm protective height) when engineers are matching safety light curtains to application risk levels and space constraints. Reviewing application type, beam gap, number of beams, protective height, and connection method makes it easier to select the right curtain for finger protection, hand detection, or body protection zones along the machine. The F3SG-4SRA0400-25 integrates cleanly with safety relays, controllers, and emergency circuits where a reliable Omron Safety Light Curtain is required.


