SEW Eurodrive DRE (IE2) and DRS (IE1)
SEW-EURODRIVE three-phase asynchronous motors of the DRE series, efficiency class IE2 (the DRS series belongs to class IE1), with efficiency data at 100%, 75% and 50% of load.
DRE is the SEW-EURODRIVE series of three-phase motors of efficiency class IE2, part of the DR.. family launched by the manufacturer on 1 January 2008. The manufacturer's document divides the family by class: DRS.. and DR2S.. belong to class IE1, DRE.. to class IE2, DRN.. to class IE3 and DRU.. to class IE4. The document describes motors for direct mounting on a gear unit or as separate motors, with feet or with flange, in sizes 56–355.
In the type code, DR indicates the series, the third letter the class (S, E, N or U), followed by the size, the length (K, S, M, L and others), possibly a power letter (R, Q, P, I, B) and the number of poles, for example “DRE 80M 4”; the digit 2 after DR marks the second generation (DR2S). The IE2 tables from the 05/2023 addendum are used, giving for each motor the power, the speed and the efficiency at 100%, 75% and 50% of load. For a quotation request please send the full code from the nameplate, the voltage and the frequency; we confirm the code, the construction variant and the availability in the quotation.
Models and codes
| Code | Note |
|---|---|
| DRE 80S 4 | 4 poles, 0.25 kW at 1440 min⁻¹ (efficiency at 100% of load 76.7%) or 0.37 kW at 1435 min⁻¹ (78.8%), at 50 Hz. |
| DRE 80M 4 | 4 poles, 0.55 kW at 1445 min⁻¹, efficiency at 100% of load 82.3% at 50 Hz; at 60 Hz, 1750 min⁻¹ and 83.4%. |
| DRE 71M 6 | 6 poles, 0.25 kW at 910 min⁻¹, efficiency at 100% of load 68.8% at 50 Hz. |
| DRE 80S 6 | 6 poles, 0.37 kW at 935 min⁻¹, efficiency at 100% of load 71.5% at 50 Hz. |
| DRE 80M 6 | 6 poles, 0.55 kW at 935 min⁻¹, efficiency at 100% of load 74.0% at 50 Hz. |
| EDRE 100M 4 | explosion-proof motor, 4 poles, 2.2 kW at 1425 min⁻¹, efficiency at 100% of load 85.4% at 50 Hz. |
| EDRE 225M 4 | explosion-proof motor, 4 poles, 37 kW at 1480 min⁻¹, efficiency at 100% of load 93.0% at 50 Hz. |
Key specifications
| Efficiency classes in the DR.. family | DRS/DR2S: IE1; DRE: IE2; DRN: IE3; DRU: IE4 |
|---|---|
| Sizes of the DR.. family | 56 – 355 |
| Number of poles in the DRE.. document | 2, 4, 6, 8 |
| Rated power DRE 80S/80M, 4 poles, 50 Hz | 0.25; 0.37; 0.55 kW |
| Rated power DRE 71M/80S/80M, 6 poles, 50 Hz | 0.25; 0.37; 0.55 kW |
| Rated power EDRE (explosion-proof), 4 poles, 50 Hz | 0.55 – 37 kW |
| Voltages at 50 Hz | 230/400 V; 400/690 V; 220–240/380–420 V; 380–420/660–720 V |
| Voltages at 60 Hz | 230/380 V; 254/440 V; 266/460 V; 254–277/440–480 V; 380 V; 440 V; 460 V; 440–480 V |
| Reference altitude | maximum 1000 m above sea level |
| Reference ambient temperature | -20 … +40 °C |
| Thermal class | 130 (B) |
The manufacturer's document used here is an addendum to the operating instructions, edition 05/2023, with data according to Regulation (EU) 2019/1781; it does not say whether the DRE and DRS series are still in production.
Frequently asked questions
What is the difference between DRS, DRE and DRN?
The manufacturer's document divides them by efficiency class: DRS and DR2S in IE1, DRE in IE2, DRN in IE3 and DRU in IE4. DRN has a separate entry; for DRS we confirm the data against the code on the nameplate.
Where do I find the current, mass and dimensions of a DRE?
The 2023 addendum is centred on the data required by Regulation (EU) 2019/1781: power, speed, efficiency at three load points and percentage losses at seven operating points. The current, mass and dimensions are confirmed against the code, from the manufacturer's documentation.
What data should I send for a quotation?
The full code from the nameplate, the voltage, the frequency, the number of poles, the construction variant (feet or flange) and, if needed, the brake or the temperature sensor. To order, the lead time is usually 1–4 weeks; the availability and the exact lead time are confirmed in the quotation.
Other SEW Eurodrive series
The IE2 tables from the 05/2023 addendum (power, speed, efficiency) are used; the rated current, mass, dimensions, brakes and the data of the DRS series are confirmed against the code, from the manufacturer's documentation.
Updated: 2026-11-12