Description
ebm-papst 4314S is a high-reliability industrial DC axial fan engineered with a standard 119 mm x 119 mm x 32 mm (4.69 in x 4.69 in x 1.26 in) footprint for critical electronic thermal management. Operating from a nominal 24 VDC supply (12.0 to 28.0 VDC range), it delivers 100.0 CFM (170.0 m³/h) of airflow and 78 Pa (0.313 in H₂O) maximum static pressure at an operating speed of 2,800 RPM while consuming just 5.0 W. Constructed from reinforced plastic housing and impeller assemblies with precision dual ball bearings, the unit supports universal mounting orientations and provides quiet 45.0 dB(A) sound emission. Electrical interfacing is handled via a 310 mm AWG 22 three-wire leaded harness featuring a factory-calibrated open-collector special tachometer speed output, reverse polarity diode protection, and intelligent locked-rotor automatic restart recovery.
Key Features
- Aerodynamic Delivery: Discharges up to 100.0 CFM (170.0 m³/h) with 78 Pa static pressure at 2,800 RPM nominal operation.
- Rugged Ball Bearings: Heavy-duty dual ball bearing system enables maintenance-free operation across any shaft mounting orientation.
- Integrated Tacho Output: Features a factory-integrated third-wire speed sensor output generating two monitor pulses per revolution.
- Comprehensive Motor Protection: Employs active locked-rotor auto-restart cycling alongside rectifying diode reverse polarity safeguards.
- Industrial Duty Construction: Lightweight 220-gram plastic housing and impeller rated for ambient operating temperatures up to 75°C.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | 4314S |
| Document / Material Number | 9294305021 (VWC0119AUJAS) |
| Product Series | 4300 |
| Product Category | DC Axial Fans |
| Fan / Component Type | Tubeaxial Fan |
| Supply Voltage Type | DC |
| Rated Voltage | 24 VDC |
| Operating Voltage Range | 12.0 to 28.0 VDC |
| Nominal Power Consumption | 5.0 W (±12.5%) |
| Power Consumption at 12 VDC | 1.1 W |
| Power Consumption at 28 VDC | 7.0 W |
| Rated Current | 210 mA (±12.5%) |
| Current Draw at 12 VDC | 95 mA |
| Current Draw at 28 VDC | 250 mA |
| Starting Current Consumption | 700 mA |
| Rated Speed | 2,800 RPM (±7.5%) |
| Speed at 12 VDC | 1,600 RPM |
| Speed at 28 VDC | 3,150 RPM |
| Airflow | 100.0 CFM (170.0 m³/h) |
| Max. Static Pressure | 0.313 in H₂O (78 Pa) |
| Optimal Operating Airflow Point | 78.9 CFM (134.0 m³/h @ 17 Pa) |
| Noise Level | 45.0 dB(A) |
| Sound Power Level | 5.8 bel(A) |
| Airflow Direction | Air outlet over struts |
| Direction of Rotation | Clockwise (looking at rotor) |
| Dimensions (L × H × D) | 119.0 × 119.0 × 32.0 mm (4.69 × 4.69 × 1.26 in) |
| Mounting Screw Size | ISO 4762 – M4 |
| Max. Mounting Flange Torque | 20 N·cm (wire outlet and remaining corners) |
| Housing Material | Plastic |
| Impeller Material | Plastic |
| Bearing Type | Dual Ball Bearings |
| Shaft Mounting Position | Any / Universal |
| Weight | 0.220 kg (0.485 lbs / 220 g) |
| Termination & Cable Specs | 3 Leaded Wires, Length 310 mm (±10 mm), AWG 22, Insulation OD 1.70 mm |
| Wiring Pinout / Connection | Wire 1 (Red): +UB | Wire 2 (Black): -GND | Wire 3 (Yellow): Tacho |
| Control / Signal Features | Special-Tacho Speed Sensor (2 Pulses/Revolution, f = 2n/60) |
| Tacho Signal Low Voltage | ≤ 0.4 V (at Isink = 1 mA) |
| Tacho Operating Voltage | ≥ 0.9 × UB |
| Tacho Slew Rate | ≥ 0.5 V/µs |
| Motor Protection | Auto Restart Locked-Rotor Protection & Reverse Polarity Diode |
| Locked Rotor Current | Approx. 700 mA |
| Locked Rotor Timing Cycle | t3 / t4: 0.6 s on / 10 s off (Initial Block 1: 5 cycles at 0.6 s / 1 s) |
| Max. Reverse Residual Current | ≤ 10 mA at UN |
| Electrical Protection Class | Class III |
| Dielectric Strength (Type Test) | 500 VAC / 1 min (after 48h at 95% RH, 25°C) |
| Insulation Resistance | > 10 MΩ (at 500 VDC for 1 min) |
| Clearance & Creepage Distance | 1.0 mm / 1.2 mm |
| Operating Temperature Range | -20°C to +75°C (-4°F to +167°F) |
| Storage Temperature Range | -40°C to +80°C (-40°F to +176°F) |
| Climatic Resistance | Humid heat constant per DIN EN 60068-2-78 (14 days), Pollution Degree 1 |
| Service Life (L10 at 40°C) | 62,500 hours |
| Standards & Compliance | CE, EAC, UL507 (E38324), VDE (EN 60950), CSA (C22.2 No. 113), RoHS |
Applications
ebm-papst 4314S provides forced-air cooling across telecommunications rectifiers, optical transport chassis, and embedded computing enclosures. Its integrated tacho signal and compact intermediate depth make it ideal for variable frequency drive inverter bays, modular servo amplifier stacks, and industrial automation PLC racks where active fan stall supervision is mandatory. The unit also serves as a high-reliability direct drop-in replacement within laboratory medical diagnostics equipment, uninterruptible power supply cabinets, and laser controller thermal subsystems.
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