Description
The ebm-papst D4E146-LV19-14 (also known as D4E146LV1914) is an industrial dual-inlet forward-curved AC centrifugal blower with an integrated PP plastic scroll housing and discharge mounting flange, powered by an internal M4E068-CF single-phase motor measuring 203 mm x 216 mm x 272 mm (7.99 in x 8.50 in x 10.71 in). Engineered for versatile multi-tap airflow delivery, it operates on 230 VAC at 50/60 Hz with a baseline free-air rating of 780 RPM and 65 W yielding 315 CFM (535 m³/h) on 50 Hz, scaling across 5 discrete speed taps up to 1335 RPM (50 Hz) and 1505 RPM (60 Hz). The assembly features an aerodynamic PA plastic impeller, bilateral anti-vibration motor suspensions, maintenance-free precision ball bearings, and an integrated terminal box housing the run capacitor. Built for harsh continuous duty, the motor incorporates an internal thermal overload protector (TOP), Class F insulation, and an IP44 protection rating for flexible multi-orientation installation.
Key Features
- Dual-Inlet Scroll Aerodynamics: Forward-curved PA plastic impeller housed in durable PP plastic delivers high volume and balanced static pressure.
- 5-Stage Multi-Speed Taps: Five discrete motor winding taps enable flexible step-switched airflow tuning from 95 to 535 m³/h.
- Bilateral Anti-Vibration Mounts: Resilient motor suspension on both sides effectively decouples structural vibration and minimizes mechanical acoustic transfer.
- Robust Thermal Protection: Internally wired thermal overload protector automatically cuts power during abnormal temperature rises to protect windings.
- Integrated Terminal Connection: Pre-wired PP terminal box incorporates the motor run capacitor with multi-pin plug-in leads for straightforward wiring.
- All-Position S1 Continuous Duty: Precision dual ball bearings and IP44 sealing support continuous operation across any mounting orientation.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | D4E146-LV19-14 |
| Alternate Part Number | D4E146LV1914 |
| Integrated Motor Model | M4E068-CF |
| Product Series | D4E146 |
| Product Category | AC Blower Fans |
| Fan / Component Type | Centrifugal blower, dual inlet, forward curved with housing and flange |
| Phase & Supply Type | 1~ Single-Phase AC |
| Rated Voltage | 230 VAC |
| Frequency | 50 Hz / 60 Hz |
| Speed (RPM) | 780 RPM (50 Hz) / 710 RPM (60 Hz) [Nominal Free Air]; up to 1335 RPM (50 Hz) / 1505 RPM (60 Hz) [Stage 5 Under Load] |
| Speed Steps | 5 Steps |
| Power Input (Nominal) | 65 W (50 Hz) / 68 W (60 Hz) |
| Current Draw (Nominal) | 0.29 A (50 Hz) / 0.30 A (60 Hz) |
| Starting Current | 0.33 A (50 Hz) / 0.33 A (60 Hz) |
| Motor Run Capacitor | 2.0 µF / 400 VDB (Standard P2 CE) |
| Max Airflow (Stage 5) | 314.9 CFM (535 m³/h at 50 Hz) / 285.5 CFM (485 m³/h at 60 Hz) |
| Min. Back Pressure | 0 Pa (0.0 in H₂O) |
| Max. Static Pressure | 95 Pa (0.381 in H₂O at 50 Hz) / 120 Pa (0.482 in H₂O at 60 Hz) |
| Sound Power Level (LwAin) | 54 to 56 dB(A) (Inlet side, Stage 5, 50 Hz) |
| Airflow Direction | Dual radial suction intake, centrifugal tangential scroll exhaust |
| Impeller Size | 146 mm (5.75 in) |
| Overall Dimensions (L × H × D) | 203 mm × 216 mm × 272 mm (7.99 in × 8.50 in × 10.71 in) |
| Flange Cutout Dimensions | 226 mm × 98.5 mm (8.90 in × 3.88 in) inner outlet; 247 mm × 142 mm (9.72 in × 5.59 in) outer flange |
| Flange Mounting Pattern | 255 mm × 80 mm (10.04 in × 3.15 in) center-to-center pitch, 4x sheet metal nuts for thread EN ISO 1478-ST4.8 |
| Housing Material | Polypropylene (PP) plastic |
| Impeller Material | Polyamide (PA) plastic |
| Terminal Box Material | Polypropylene (PP) plastic |
| Rotor Surface | Uncoated |
| Motor Bearing | Maintenance-free ball bearings |
| Motor Suspension | Motor mounted with anti-vibration damping on both sides |
| Direction of Rotation | Counter-clockwise, viewed toward rotor |
| Installation Position | Any (horizontal or vertical) |
| Operating Mode / Duty Cycle | S1 Continuous operation |
| Weight | 2.5 kg (5.51 lbs) |
| Termination & Cable Specs | Axial cable exit via terminal box, Tyco 9-pole plug connector housing 927231-5, ETFE AWG20/AWG22 leads |
| Wiring Pinout / Designations | Pin 1: Step 1 (min) | Pin 2: Step 2 | Pin 3: Step 3 | Pin 4: Step 4 | Pin 5: Step 5 (max) | Pins 6-7: Capacitor | Pin 8: Neutral (N) | Pin 9: Protective Earth (PE) |
| Motor Protection | Thermal Overload Protector (TOP) internally wired |
| Electrical Protection Class | Class I (with protective earth connected by customer) |
| Touch Current (acc. IEC 60990) | < 0.75 mA (Measuring network Fig. 4, TN system) |
| Insulation Class | Class F |
| Humidity Class | F0 |
| Ingress Protection (IP) | IP44 (depending on installation and position) |
| Operating Ambient Temperature | -25 °C to +50 °C (-13 °F to +122 °F at 50 Hz) / -25 °C to +40 °C (-13 °F to +104 °F at 60 Hz) |
| Storage / Transport Temperature | -40 °C to +80 °C (-40 °F to +176 °F) |
| Standards & Compliance | EN 60335-1, CE, CCC, EAC, UKCA, RoHS3 Compliant |
Applications
The ebm-papst D4E146-LV19-14 centrifugal blower is engineered for precise air movement across commercial fan coil units, ducted ventilation plenums, and air curtain installations. It serves as a primary cooling and circulation blower in medical thermal baths, laboratory fume exhausts, and industrial drying ovens where multi-stage volume adjustment is needed. Additionally, OEM facilities deploy this unit within environmental test chambers, electronic console cooling ducts, and heat recovery ventilation subsystems.
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