The Omron S8FS-G15048CD is a 150 W DIN-rail switching power supply delivering 48 V DC at 3.3 A from a single-phase 100–240 V AC input. That 150 W figure is the continuous rated output — it's the number that governs whether this supply carries your load without derating. The 3.3 A at 48 V DC is the current you can draw continuously; if your 48 V DC bus pulls more than that, you need the next frame up. Input frequency range is 47–450 Hz, so it handles both 50/60 Hz mains and higher-frequency generator or UPS outputs without complaint. The supply is built for panel integration — DIN-rail mount, aluminum and stainless steel housing, screw terminals accepting 12–20 AWG wire. The housing material matters in washdown or corrosive environments: the stainless steel resists rust, and the aluminum body acts as a heatsink. Green LED status indicator gives a quick visual on output health. Protection suite includes overload, overvoltage, and automatic reset — meaning it recovers on its own after a fault clears, which reduces nuisance service calls on remote or unattended panels. Series operation is supported, so you can stack two units for higher voltage if needed.
Reliability and lifecycle read
Hold-up time is specified at 11 msec minimum at full load, 55 msec at lighter load — enough to ride through most line dips without dropping the DC bus. Start-up time is 1,000 msec maximum, so factor that into your power-up sequence if the downstream loads need a staggered ramp.
Approvals and compliance documentation
This supply carries UL 508 listing and UL 60950-1 recognition, plus cUL, cUR, and VDE marks. It also meets SEMI F47-0706 voltage sag immunity at 200 V AC input — a key spec for semiconductor fab equipment where a 20 msec dip can't drop the tool. The approvals package covers North America (UL/cUL), Europe (VDE), and the semiconductor industry standard, so it's accepted in most industrial control panels and OEM machinery. Efficiency hits 88% at 230 V AC, which keeps the heat rise manageable in a sealed enclosure. Output noise is capped at 120 mV — clean enough for most PLC and sensor loads, but verify against sensitive analog circuits.