Omron F3SG-4SRA0400-25 Safety Light Curtain
Omron F3SG-4SRA0400-25 is a Safety Light Curtain designed for 25 mm hand protection across a 400 mm protective height. Its sensing field uses 20 infrared beams arranged with a 20 mm beam gap to detect opaque objects entering the guarded opening. The operating range is specified at 0.3 to 20.0 m or 0.3 to 7.0 m depending on configuration. It operates from a SELV/PELV 24 VDC supply and provides PNP/NPN safety outputs. Within the F3SG-SR Series, the F3SG-4SRA0400-25 provides compact hand-detection coverage. For industrial machine guarding, explore 400 mm hand protection light curtains from 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 Safety Light Curtain provides 25 mm hand detection across a 400 mm protective height. Its sensing field consists of 20 infrared beams arranged with a 20 mm beam gap to detect opaque objects entering the guarded machine opening. The operating range is specified at 0.3 to 20.0 m or 0.3 to 7.0 m depending on configuration. It operates from a SELV/PELV 24 VDC ±20% supply and provides PNP/NPN safety outputs. Maximum current consumption is specified at 79 mA for the emitter and 119 mA for the receiver. The enclosure carries IP65 and IP67 protection ratings.
For selection, the F3SG-4SRA0400-25 should be evaluated by its 25 mm detection capability, 400 mm protective height, 20 mm beam spacing, sensing distance, and PNP/NPN output configuration. These specifications determine the protected vertical area and electrical interface required for the safety control system. A model with greater height can be considered where the guarded opening extends beyond 400 mm while retaining the same hand-protection class. For a taller 1200 mm configuration using 60 beams with the same 20 mm beam gap, see Omron F3SG-4SRA1200-25.


