DRN280S4 SEW-EURODRIVE 75kW IE3 Motor | 4-Pole TEFC IP55

DRN280S4 SEW-EURODRIVE IE3 Motor – 75 kW, 4-Pole, Premium Efficiency

The DRN280S4 from SEW-EURODRIVE is a 75 kW three-phase asynchronous motor. It delivers IE3 premium efficiency and reliable performance for demanding industrial duty. This 4-pole squirrel-cage motor belongs to the modular DRN series. It runs continuously (S1) and supports inverter operation. The motor comes with TEFC cooling and IP55 protection. It is a direct successor to the DRS and DR2S lines. You get strong torque, low noise, and long service life. Ideal for conveyors, mixers, pumps, and many other machines.

Technical Data

• Brand: SEW-EURODRIVE
• Model: DRN280S4
• Series: DRN Three-Phase Asynchronous Motor
• Motor Type: Squirrel-cage three-phase asynchronous, 4-pole, TEFC
• Rated Power: 75 kW
• Rated Voltage: 400 V, 3-phase, 50 Hz (Δ connection; star/delta options for 230/400 V or 400/690 V)
• Rated Current: 143 A at 400 V, 50 Hz
• Rated Speed: 1482 min⁻¹
• Rated Torque: 485 Nm
• Efficiency Class: IE3 (Premium Efficiency per IEC 60034-30-1)
• Efficiency at 100% Load: 95.0 %
• Efficiency at 75% Load: 95.3 %
• Efficiency at 50% Load: 94.9 %
• Power Factor: cos φ = 0.79
• Insulation Class: Thermal class 155 (F) per IEC 60034-1 (class 180 H available on request)
• Cooling Method: TEFC – totally enclosed fan-cooled (IC 411 per IEC 60034-6)
• Duty Type: S1 continuous, line and inverter duty (VPWM per IEC 60034)
• Mounting Arrangement: IM B35 standard (foot + flange); IM B3, IM B5, IM B14 available
• Protection Rating: IP55 per IEC 60034-5 (up to IP66 on request)
• Operating Temperature: -20 to +40 °C ambient (rated output at max +40 °C, ≤1000 m altitude)
• Storage Temperature: -15 to +70 °C
• Relative Humidity: Non-condensing (per IEC 60034-1 standard motor conditions)
• Weight: 520 kg
• Dimensions (H×W×D): Not published as a numerical table; consult SEW dimension sheets

Core Performance and Environmental Resistance

• Measurement Range: 75 kW continuous power; speed up to 1482 min⁻¹ at rated load.
• Frequency Response: 50 Hz nominal; suitable for inverter operation with VPWM.
• Sensitivity / Linearity: Stable torque output (485 Nm) and smooth speed control under varying loads.
• Resolution: Precise speed regulation with 4-pole design and IE3 efficiency.
• Temperature Range: Ambient -20 to +40 °C; storage -15 to +70 °C.
• Environmental Tolerance: IP55 standard; resists dust and water jets. Non-condensing humidity.
• Interference Resistance: Meets IEC 60034 electromagnetic compatibility for industrial environments.

Installation Guide

• Mount the motor using IM B35 foot and flange arrangement. Other mounts available.
• Align the motor shaft carefully with the driven load. Use flexible couplings if needed.
• Ensure free airflow around the fan cover. Do not block cooling fins.
• Connect power according to the wiring diagram. Check rotation direction before coupling.
• For inverter use, follow SEW VPWM settings. Keep cable length within limits.
• Tighten all bolts to the recommended torque. Check alignment after first run.

Commissioning and Maintenance Convenience

• Easy terminal box access. Clear markings for star/delta changeover.
• Bearing life is long. Regreasing intervals are generous.
• No special tools needed for routine checks.
• Monitor vibration and temperature. Early detection prevents downtime.
• Insulation class 155 (F) handles high thermal stress.
• Spare parts are widely available through SEW network.

Compatibility Notes

• Works with standard SEW gearboxes and adapters.
• Compatible with common VFDs. For best results, use SEW inverters.
• Star/delta changeover supports 230/400 V or 400/690 V supplies.
• Foot and flange mounting fits many existing machine frames.
• Drop-in replacement for DRS and DR2S series in most cases.

Certifications

• IEC 60034-1 – rating and performance.
• IEC 60034-5 – IP55 protection.
• IEC 60034-6 – cooling method IC 411.
• IEC 60034-30-1 – IE3 efficiency.
• CE marked. Other approvals on request.

Packaging List

• 1 × SEW DRN280S4 motor
• 1 × terminal box cover and gasket
• 1 × mounting flange (for B35 version)
• 1 × operation and maintenance manual (digital or printed)
• 1 × declaration of conformity

Warranty and Shipping

• Warranty: 12 months from delivery.
• Dispatch: 12–24 hours after order confirmation.
• Couriers: FedEx, UPS, DHL. Tracking provided.
• For urgent needs, contact sales@powergearx.com or +86 18030005825.

Expert Review

I have used the DRN280S4 in several heavy-duty projects. The 75 kW output and IE3 efficiency cut energy costs. The motor runs cool even at 40 °C ambient. Inverter duty works well with SEW drives. The IP55 housing stands up to dusty and wet plants. Weight is 520 kg, so plan lifting gear. Terminal access is simple. Bearing life exceeds expectations. This is a reliable workhorse for continuous operation.

Manager’s Insight

Customers often ask for a motor that balances power and efficiency. The DRN280S4 delivers. It replaces older DRS models without major changes. The IE3 rating meets current regulations. Stock levels are strong. We ship within 24 hours via FedEx, UPS, or DHL. For a 75 kW motor, this unit offers excellent value. Pair it with a SEW gearbox for a complete drive package.

Best Suited Equipment and Applications

• Conveyors: Belt and chain conveyors in mining, logistics, and bulk handling.
• Mixers: Agitators and mixers for chemicals, food, and wastewater.
• Pumps: Centrifugal and positive displacement pumps for water and process fluids.
• Compressors: Industrial air compressors with high duty cycles.
• Fans and Blowers: Large ventilation systems for tunnels and plants.
• Machine Tools: Main drives for presses, crushers, and extruders.

FAQ

• Q: What does IE3 mean for my energy bill?
  A: IE3 is premium efficiency. It uses less power for the same output. You save money over time. The DRN280S4 hits 95.0 % efficiency at full load.
• Q: Can I use this motor with a VFD?
  A: Yes. The motor supports inverter duty (VPWM). For best results, use SEW inverters. Keep cable lengths moderate.
• Q: How do I wire for 230 V or 690 V?
  A: The terminal box allows star/delta changeover. Check the nameplate and manual. If unsure, consult an electrician.
• Q: What is the lead time and shipping method?
  A: We ship in 12–24 hours. Couriers are FedEx, UPS, and DHL. You get a tracking number.
• Q: Is the motor foot and flange mount?
  A: Standard is IM B35 (foot + flange). You can order IM B3, B5, or B14. Tell us your mounting needs.
• Q: Does it come with a warranty?
  A: Yes. 12 months from delivery. Keep your invoice. Contact us for any issue.
• Q: How often should I regrease the bearings?
  A: Under normal conditions, every 4000–6000 hours. In dusty or hot areas, check more often. See the manual.
• Q: Can I replace a DRS motor with this DRN model?
  A: In most cases, yes. The DRN is the successor. Check shaft, flange, and terminal box position. Contact us for a cross-reference.
• Q: What is the motor weight?
  A: 520 kg. Use proper lifting equipment. Do not lift by the fan cover.
• Q: Do you offer IP66?
  A: Yes, IP66 is available on request. It costs extra and takes a bit longer. Ask sales for a quote.

Buying Guide

• Check your required power and speed. 75 kW and 1482 min⁻¹ suit many heavy tasks.
• Confirm voltage and frequency. 400 V, 50 Hz is standard. Other voltages via changeover.
• Choose mounting. B35 is standard. B3, B5, B14 available.
• Decide on protection. IP55 is standard. IP66 for washdown or dusty sites.
• Plan for inverter use. Tell us if you use a VFD. We can pre-configure.
• Order spare parts together. Terminal box gaskets and bearings are common spares.
• Contact us for bulk pricing. We support projects and OEM accounts.

For questions, reach us at sales@powergearx.com or +86 18030005825 (WhatsApp).

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