The San Ace 109S304 is a 115V AC Round-Sidecut Ø172 cooling fan delivering high airflow (up to 226.1 CFM) and solid static pressure (up to 196 Pa) in a compact, sidecut-friendly 150 × 51 mm depth design. With capacitor motor stability and safety protections, it’s a trusted choice for telecom, IT infrastructure, industrial enclosures, and power conversion equipment.

Key Features

• Round-Sidecut Housing: Ø172 × 150 × 51 mm footprint for clean panel integration

• High Cooling Capacity: Up to 226.1 CFM, 196 Pa (0.787 inH₂O)

• Rugged Build: Aluminum frame, UL 94V-1 rated impeller

• Reliable Operation: Capacitor motor, locked rotor burnout protection

• Noise-Controlled: 51 / 56 dB(A) at 50/60 Hz

• Longevity: 25,000 hrs @ 60°C (L10), reference 56,000 hrs @ 40°C

Specifications (from datasheet)

• Model: 109S304

• Rated Voltage: 115V AC

• Frequency: 50 / 60 Hz

• Input Power: 27/25 W (100V reference; 115V is in the same family table; 109S304 current shown below)

• Current: 0.29 / 0.22 A (locked rotor 0.55 / 0.54 A)

• Rated Speed: 2900 / 3500 min⁻¹

• Max Airflow: 5.3 / 6.4 m³/min (187.3 / 226.1 CFM)

• Max Static Pressure: 147 / 196 Pa (0.59 / 0.787 inH₂O)

• SPL: 51 / 56 dB(A)

• Operating Temp: -30 to +60°C

• Mass: ~1000 g

• Motor: Capacitor motor

Applications

• Power distribution, rectifiers, inverters, battery backup

• Datacom/telecom cooling; cabinets and rack systems

• Energy, industrial automation, process control

• Thermal management in compact side-mounted panels

Mounting & Accessories

• Mounting: Round-sidecut layout; M4×0.7 earth tap depth 5 mm

• Finger Guards: 109-319E, 109-319J, 109-319H

• Plug Cords: PSE: 489-1619-L10/L21; UL/CSA: 489-084-L10/L21

• Set Model: ST1-109S304 (includes fan, guard, PSE plug, screws)