Name: DRN71MS4 SEW-EURODRIVE IE3 Motor 0.25 kW 4-Pole DRN Series
SKU: DRN71MS4
Price: 234.00 USD
Availability: InStock

Product details

DRN71MS4 SEW-EURODRIVE IE3 Motor 0.25 kW 4-Pole DRN Series

Meet the DRN71MS4, a compact IE3 motor from SEW-EURODRIVE. At 400 V and 50 Hz, it delivers 0.25 kW. Because it has 4 poles, it runs at 1405 min⁻¹. Under duty S1, it works non-stop. In addition, it supports inverter use. This frame is small and light. As a result, it fits many small machines. Powergear X Automation Limited keeps it in stock. Meanwhile, stock units leave in 12-24 hours by FedEx, UPS, or DHL. Also, a 12-month warranty covers each unit.

Why This Motor Stands Out

Core facts
- Brand: SEW-EURODRIVE
- Model: DRN71MS4
- Series: DRN Three-Phase Asynchronous Motor
- Type: Squirrel-cage three-phase asynchronous, TEFC
- Poles: 4
Main gains
- IE3 class cuts energy waste.
- Because the frame is small, it fits tight spaces.
- S1 duty supports long work hours.
- Inverter mode allows speed control.
Best equipment and scenes
- Small conveyors and feeders
- Pumps and small fans
- Packaging and labeling units
- Food and textile machines
- Gear motors with SEW units

Expert Review

What experts like
- Good output for a tiny frame.
- IE3 design lowers power bills.
- TEFC shell keeps dust out.
- SEW parts are easy to find.
- Simple swap for old DRS units.
Where it may fall short
- Low power suits light loads only.
- Heavy starts need a bigger model.
- Check flange and shaft before you buy.

Manager’s Insight

Buying tips from our team
- Most buyers pick this for 0.25 kW tasks.
- Confirm 400 V and 50 Hz first.
- Pick IM B35 for foot and flange fit.
- Ask us to check your old motor data.
- Stock ships in 12-24 hours.
Support you get
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825

Technical Data

Name and source
- Brand: SEW-EURODRIVE
- Model: DRN71MS4
- Series: DRN Three-Phase Asynchronous Motor
Power data
- Rated power: 0.25 kW
- Rated voltage: 400 V, 3-phase, 50 Hz
- Link: Δ connection; star/delta changeover per size
- Rated current: 0.72 A at 400 V, 50 Hz
- Rated speed: 1405 min⁻¹ at rated load
- Rated torque: 1.7 Nm
- Power factor: cos φ = 0.66
- Efficiency: IE3 per IEC 60034-30-1
- Efficiency at 100% load: 73.5%
- Efficiency at 75% load: 73.5%
- Efficiency at 50% load: 70.1%
Work mode
- Duty type: S1 continuous operation
- Line and inverter duty: VPWM per IEC 60034
- Insulation class: Thermal class 155 (F) per IEC 60034-1
- Optional thermal class 180 (H) on request
Cooling and mount
- Cooling method: TEFC totally enclosed fan-cooled
- Cooling code: IC 411 per IEC 60034-6
- Standard mount: IM B35 foot with flange
- Optional mount: IM B3, IM B5, IM B14 per order
Environment limits
- Run temperature: -20 to +40 °C ambient
- Rated output at max +40 °C and ≤1000 m above sea level
- Store temperature: -15 to +70 °C
- Protection: IP55 per IEC 60034-5
- Optional protection: up to IP66 on request
- Humidity: non-condensing
- Insulation class: Class 155 (F)
Body data
- Weight: 6.8 kg
- Size: check SEW dimension sheets
- Envelope numbers are not in the SEW assignment table

Install Guide

Before you start
- Match nameplate data to your power line.
- Look over shaft, flange, and terminal box.
- Keep room air within -20 to +40 °C.
Mount steps
- Use IM B35 as the standard fit.
- Line up motor and machine well.
- Tighten bolts to the right torque.
- Do not block the fan cover.
Wire steps
- Follow the terminal chart for Δ or star.
- Match supply to 400 V, 50 Hz.
- Use glands that keep IP55.
- Ground the frame before power-on.

Setup and Care

First run
- Check turn direction before coupling.
- Run with no load and listen.
- Measure current at full load.
- Confirm speed hits 1405 min⁻¹.
Routine care
- Keep fins and fan cover clean.
- Check wires and terminal screws.
- Listen for bearing noise.
- Swap seals to hold IP55.

Fit and Match

Drive match
- Runs on line power at 400 V, 50 Hz.
- Runs on VPWM inverters for speed change.
- Star/delta changeover aids 230/400 V or 400/690 V supply per size.
Machine match
- Fits SEW modular gear units.
- Mount choices: IM B3, IM B5, IM B14.
- Foot and flange design suits many frames.

Standards and Papers

IEC rules
- IEC 60034-1 for ratings and heat class
- IEC 60034-5 for IP55
- IEC 60034-6 for IC 411 cooling
- IEC 60034-30-1 for IE3
Line status
- Listed on the SEW global DR.. page.
- Last check: 2026-09.
- Current SEW-EURODRIVE product.
- IE3 successor to DRS../DR2S.. units.

Box List

Inside the box
- 1 x DRN71MS4 motor
- 1 x terminal box lid and screws
- 1 x nameplate and data sheet note
- 1 x safe shipping pack
Order choices
- Mount: IM B35 standard; IM B3, IM B5, IM B14 optional
- Protection: IP55 standard; IP66 optional
- Heat class: 155 (F) standard; 180 (H) optional

Warranty and Shipping

Warranty
- 12-month warranty covers factory faults.
- Normal industrial use keeps the warranty valid.
Ship speed
- Stock items leave in 12-24 hours.
- Couriers: FedEx, UPS, DHL.
- Tracking number comes after dispatch.
Talk to us
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825

FAQ

Q: Will this motor fit my old SEW gearbox?
- A: Most likely yes. The DRN line is the IE3 follow-up to DRS and DR2S units. Check the flange and shaft first.
Q: How do I pick between IM B35 and IM B3?
- A: Pick IM B35 if you need both foot and flange. Pick IM B3 if you only need feet. Pick IM B5 or IM B14 for flange-only fit.
Q: Can I run this motor at a speed other than 1405 min⁻¹?
- A: Yes. Use a VPWM inverter. Set motor data from the nameplate. Keep the speed within safe limits.
Q: What if my room gets hotter than 40 °C?
- A: The motor is rated for +40 °C. Above that, output drops. Talk to us for a derating check.
Q: What do I get with the order?
- A: You get one DRN71MS4 motor, box hardware, and a data sheet note. A 12-month warranty is included. In-stock units ship in 12-24 hours by FedEx, UPS, or DHL.

Buying Guide

Check the load
- Pick 0.25 kW only for light tasks.
- Check start torque for heavy gear.
Check the power
- Confirm 400 V and 50 Hz.
- Plan star/delta links for other voltages.
Check the mount
- Standard is IM B35.
- Order IM B3, IM B5, or IM B14 if you need them.
Check the place
- Use IP55 for dusty or wet spots.
- Move to IP66 for washdown zones.
Check the drive
- Pick a VPWM inverter for speed control.
- Set the motor data at setup.
Order with ease
- Ask us to check your data if unsure.
- Stock units ship in 12-24 hours.