Product details
DRN71M4 SEW-EURODRIVE IE3 Three-Phase Motor
Model DRN71M4 is a compact IE3 motor from SEW-EURODRIVE. It gives 0.37 kW at 400 V, 50 Hz. It runs nonstop under S1 duty. Also, it fits the modular DRN motor system. This unit is great for small drives, fans, pumps, and gearmotors.
Why buyers pick it: Low power draw, small frame, and strong IE3 efficiency. It is the IE3 follow-up to the DRS and DR2S line.
Technical Data
- Brand: SEW-EURODRIVE
- Model: DRN71M4
- Series: DRN Three-Phase Asynchronous Motor
- Motor type: Squirrel-cage three-phase async, TEFC, 4 poles
- Rated power: 0.37 kW
- Rated voltage: 400 V, 3-phase, 50 Hz
- Connection: Δ link; star/delta change for 230/400 V or 400/690 V by size
- Rated current: 1.02 A at 400 V, 50 Hz
- Rated speed: 1415 min⁻¹ at full load
- Rated torque: 2.5 Nm
- Efficiency: IE3 Premium per IEC 60034-30-1
- Efficiency at 100% load: 77.3 %
- Efficiency at 75% load: 77.3 %
- Efficiency at 50% load: 74.3 %
- Power factor: cos φ = 0.66
- Insulation class: Class 155 (F) per IEC 60034-1; class 180 (H) on request
- Cooling: TEFC, IC 411 per IEC 60034-6
- Duty type: S1 continuous; line and inverter duty, VPWM per IEC 60034
- Mounting: IM B35 standard; IM B3, IM B5, IM B14 on order
- Operating temp: -20 to +40 °C ambient
- Rated output limit: Max +40 °C and ≤1000 m above sea level
- Storage temp: -15 to +70 °C per SEW doc 31974465
- Protection: IP55 per IEC 60034-5; IP66 on request
- Humidity: Non-condensing; no %RH value published by maker
- Weight: 8 kg motor weight mMot per SEW rated-data table
- Dimensions: Not published as a number table; see SEW dimension sheets
- Lifecycle: Active SEW-EURODRIVE line; IE3 heir to DRS and DR2S
- Last verified: 2026-09
Install Guide
- Read the nameplate first.
- Match volts and hertz to your supply.
- Use IM B35 mount as standard.
- Pick IM B3, B5, or B14 if your machine needs it.
- Align the motor with the load.
- Keep the fan and fins clean.
- Keep dust and water out.
- For inverter use, set VPWM per IEC 60034.
Setup and Care
- Terminal box is easy to reach. So, wiring is fast.
- Star/delta change gives you 230/400 V or 400/690 V by size. Thus, supply choice is flexible.
- Class 155 (F) takes heat well. Class 180 (H) is a special order.
- Check bearings and grease on a set plan.
- Look at the fan cover at each service stop.
- Store dry, from -15 to +70 °C.
Works With
- SEW DRN modular parts
- Standard gearmotor builds
- Line and inverter drives
- 400 V, 50 Hz three-phase mains
- Many mount styles for fit
- IE3 plans that save power
Standards and Certifications
- IEC 60034-1 for heat class and rating
- IEC 60034-5 for IP55
- IEC 60034-6 for IC 411 cooling
- IEC 60034-30-1 for IE3
- SEW official rated-data sheets
Box Contents
- 1 x SEW-EURODRIVE DRN71M4 motor
- 1 x nameplate and rating label
- 1 x terminal box cover and screws
- 1 x fan cover and fan
- 1 x install and safety sheet
Warranty and Ship
- Warranty: 12 months
- Ship time: 12 to 24 hours
- Couriers: FedEx, UPS, DHL
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
Expert Review
The DRN71M4 is a small motor with a big job. Its IE3 rating cuts power loss. Also, the TEFC shell blocks dust and water. It pairs well with SEW gearboxes and drives. Yet, it is not built for shock loads. For heavy starts, check the duty cycle and heat margin. All in all, it is a solid pick for light industrial work.
Manager’s Insight
Buyers want IE3 motors that drop into old SEW frames. The DRN71M4 does that. It often swaps out DRS and DR2S units. Stock moves fast since 0.37 kW is a common size. If you need IP66 or class H, order soon. Use the 12 to 24 hour ship window for line stops. Reach sales@powergearx.com or +86 18030005825 for stock checks.
Best Fit Equipment and Uses
- Small conveyors
- Fans and blowers
- Pumps
- Gearmotor sets
- Packaging lines
- Light material handling
- General factory automation
- Inverter drive systems
FAQ
Q: How is the DRN71M4 better than old SEW motors?
A: It has IE3 efficiency. It also fits the new DRN modular system. That makes swaps and design work easy.
Q: Can I use it with a VFD?
A: Yes. It supports line and inverter duty. Use VPWM per IEC 60034 for best results.
Q: Is the mount style fixed?
A: No. IM B35 is standard. You can order IM B3, IM B5, or IM B14 for your machine.
Q: What do I check before I buy?
A: Check volts, hertz, mount, and load torque. Also check room temp and height above sea level.
Q: How fast do you ship?
A: We send orders in 12 to 24 hours. We use FedEx, UPS, and DHL.
Q: What if I need IP66 or class H?
A: Both come on request. Order early, since lead time may be longer.
Q: Does it have a warranty?
A: Yes. It comes with a 12-month warranty.
Q: Who do I call for rush stock?
A: Email sales@powergearx.com or message +86 18030005825 on WhatsApp.
Q: Will this motor fit my old gearbox?
A: It often fits SEW DRN, DRS, and DR2S frames. Still, check the flange and shaft size first.
Q: Is 0.37 kW enough for my load?
A: Add up your torque need at 1415 min⁻¹. If the load is light and steady, this size works well.
Buying Guide
- Check supply volts and hertz first.
- Match motor power to the load.
- Pick the mount that fits your machine.
- Check room temp and site height.
- Choose IP55 for normal plant use.
- Pick IP66 for wet or dusty spots.
- Order class H only if heat is a real risk.
- Use a VFD if you need speed control.
- Ask for stock and ship details before you buy.
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Original Source: https://www.powergearx.com/
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