DRN225M4 SEW 45kW IE3 Motor | DRN Series TEFC 400V

DRN225M4 | SEW-EURODRIVE | 45 kW IE3 Motor | DRN Series

This SEW-EURODRIVE DRN225M4 is a 4-pole, three-phase asynchronous motor. It delivers 45 kW at 400 V, 50 Hz. The motor runs continuously (S1 duty). It belongs to the modular DRN.. system. This series is the IE3 successor to the DRS../DR2S.. line. It suits industrial automation and heavy machinery. The TEFC housing saves space and protects against dust and water.

Technical Data

• Brand: SEW-EURODRIVE
• Model: DRN225M4
• Series: DRN Three-Phase Asynchronous Motor
• Motor type: Squirrel-cage three-phase asynchronous, 4 poles
• Rated power: 45 kW
• Rated voltage: 400 V nominal, 3-phase, 50 Hz (Δ connection; star/delta changeover for 230/400 V or 400/690 V supply per size)
• Rated current: 81 A at 400 V, 50 Hz
• Rated speed: 1482 min⁻¹ at rated load
• Rated torque: 290 Nm
• Efficiency: IE3 (Premium Efficiency per IEC 60034-30-1); η at 100% load = 94.2 % (η at 75% = 94.5 %, η at 50% = 94.1 % at 400 V, 50 Hz)
• Power factor: cos φ = 0.85
• Insulation class: Thermal class 155 (F) per IEC 60034-1 (thermal class 180 (H) on request)
• Cooling method: TEFC – totally enclosed fan-cooled (IC 411 per IEC 60034-6)
• Mounting arrangement: IM B35 (foot-mounted with flange) standard; IM B3 / IM B5 / IM B14 available per order option
• Duty type: S1 (continuous operation), line and inverter duty (VPWM per IEC 60034)
• Operating temperature: -20 to +40 °C ambient (rated output at max +40 °C and ≤1000 m above sea level)
• Storage temperature: -15 to +70 °C (per SEW official technical data doc 31974465, family-level for DRN.. motor series)
• Protection rating: IP55 per IEC 60034-5 (up to IP66 on request)
• Relative humidity: Non-condensing (no specific %RH value published by manufacturer for DRN motor series; per IEC 60034-1 standard motor environmental conditions)
• Dimensions (H×W×D): Not published as numerical table (consult SEW dimension sheets)
• Weight: 310 kg (motor weight mMot per SEW official rated-data table)
• Lifecycle: Current SEW-EURODRIVE product line; DRN.. is the IE3 successor to the DRS../DR2S.. series and is listed on the official SEW global DR.. product page (Last verified: 2026-09)

Installation Guide

• Mount the motor on a rigid base. Use the IM B35 flange and feet.
• Align the shaft carefully. Avoid excessive belt tension.
• Check the terminal box position. It can rotate in 90° steps.
• Connect the power cables according to the Δ or Y diagram.
• Ensure proper grounding. Use a torque wrench for terminal screws.
• Keep the cooling air path clear. Do not block the fan cover.

Commissioning and Maintenance

• Before start-up, check insulation resistance.
• Verify the supply voltage matches the nameplate.
• Run the motor without load first. Listen for unusual noise.
• Lubricate bearings at recommended intervals. Use the grease type on the label.
• Inspect the fan and fan cover every 3 months.
• Keep the motor clean. Dust buildup can cause overheating.

Compatibility Notes

• Works with standard three-phase mains.
• Compatible with variable frequency drives (VFD). Use VPWM per IEC 60034.
• Fits SEW gear units and adapters.
• Available with IM B3, B5, B14 mounts on request.
• Can replace DRS../DR2S.. motors in many existing setups.

Certifications

• IEC 60034-1 (thermal class 155 F)
• IEC 60034-30-1 (IE3 Premium Efficiency)
• IEC 60034-5 (IP55)
• IEC 60034-6 (IC 411 cooling)

Package Contents

• 1 x SEW-EURODRIVE DRN225M4 motor
• 1 x terminal box cover and gasket
• 1 x shaft key
• 1 x operation manual (digital or print)

Warranty and Shipping

• Warranty: 12 months from delivery.
• Lead time: Ships in 12–24 hours for in-stock units.
• Couriers: FedEx, UPS, DHL.
• Tracking number provided after dispatch.
• For urgent orders, contact sales@powergearx.com or +86 18030005825 (WhatsApp).

Expert Review

This DRN225M4 is a solid workhorse. It balances high efficiency with rugged construction. The IE3 rating cuts energy costs over time. The TEFC design handles dusty and damp plants. The 45 kW output fits many pumps, fans, and conveyors. The wide voltage range allows global use. The motor runs smoothly with VFDs. It is a good pick for continuous duty.

Manager’s Insight

From a procurement view, the DRN225M4 is a smart buy. It replaces older DRS motors without major rewiring. The 310 kg weight signals robust materials. SEW’s global support network reduces downtime risk. We keep stock ready for 12–24 hour dispatch. If you need a reliable 45 kW motor, this is a safe choice.

Ideal Equipment and Applications

• Industrial pumps and compressors
• Conveyor systems
• Mixers and agitators
• Fans and blowers
• Machine tools
• Packaging lines
• Material handling equipment

FAQ

Q: Does this motor work with a VFD?

A: Yes. It is inverter duty rated. Use a VPWM drive per IEC 60034. Keep cable length within drive maker limits.

Q: Can I mount it vertically?

A: Yes. The IM B35 flange supports vertical and horizontal mounting. For vertical shaft down, add a drip cover.

Q: What is the lead time for a custom voltage?

A: Standard 400 V ships in 12–24 hours. For 230/400 V or 400/690 V changeover, add 3–5 days.

Q: How often should I grease the bearings?

A: At 40 °C ambient, grease every 8000 hours. At higher temperatures, shorten the interval. See the manual for details.

Q: Is a flange available separately?

A: The IM B35 flange is standard. For IM B5 or B14, order the correct option. Contact us for part numbers.

Q: What if the motor runs hot?

A: Check for blocked airflow. Verify voltage and current. Ensure the ambient stays under 40 °C. If the issue persists, call our team.

Q: Can I use this motor outdoors?

A: IP55 handles dust and water jets. For direct rain, add a canopy. For harsh chemicals, consider IP66 on request.

Q: Do you offer a replacement for older DRS models?

A: Yes. The DRN225M4 is the IE3 successor. Check frame size and shaft dimensions. Our engineers can help you cross-reference.

Buying Guide

• Check your supply voltage: 400 V, 50 Hz is standard.
• Confirm the mounting: IM B35 fits most foot and flange needs.
• Match the power: 45 kW for heavy loads.
• Consider efficiency: IE3 lowers long-term energy bills.
• Plan for VFD use: VPWM rating ensures long motor life.
• For fast delivery, ask about stock. We ship via FedEx, UPS, or DHL.
• Need help? Email sales@powergearx.com or +86 18030005825.

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