0.37kW 1500rpm 4 Pole 220-240V/380-415V 50Hz IE2 HEF31 DC Brake Motor Universal Motors
The Universal Motors HEF31-71G-4 is a 0.37kW 4-pole three-phase induction motor with a DC brake fitted as standard. It has an aluminium frame, a TEFV IP55 enclosure and is rated IE2 High Efficiency. It suits hoists, conveyors and machines that need to stop quickly and hold position.
Technical specifications
| Part number | HEF31-71G-4 |
|---|---|
| Series | Universal Motors HEF31, aluminium DC brake motor, IE2 |
| Rated output | 0.37 kW (0.5 hp) |
| Poles / synchronous speed | 4 pole / 1500 rpm |
| Rated speed | 1400 rpm |
| Supply | 220-240V/380-415V, 3-phase, 50Hz |
| Efficiency at full load | 72.7% |
| Rated current at 400V | 1.04 A |
| Power factor (cos φ) | 0.71 |
| Rated torque | 2.52 Nm |
| Starting current (Ia/In) | 6.0 |
| Frame size | IEC 71M2 |
| Enclosure | TEFV, IP55 |
| Insulation class | F |
| Duty | S1 continuous |
| Brake | DC brake, brake frame 06 |
| Brake torque | 4 Nm |
| Brake supply | 400V AC, rectifier fitted |
| Mountings | B3 foot or B5 flange |
Electrical data is for the HEF31-71G-4 motor at 50Hz. Download the datasheet for each mounting from this page, including the overall length with the brake fitted. The standard brake supply is 400V AC with a rectifier fitted. If you need a different brake voltage, message us before ordering.
Typical applications
- Hoists, lifts and winches
- Conveyors that must stop in position
- Packaging and indexing machinery
- Gates, doors and positioning drives
Brakes can also be fitted to other stock motors on request. For help with sizing, brake selection or a matched drive, contact our engineers.
| Power | 0.37 kW |
|---|---|
| Power (HP) | 0.5 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 1.04 A |
| Power factor (cos φ) | 0.71 |
| Efficiency class | IE2 |
| Efficiency | 72.7% |
| Rated torque | 2.52 Nm |
| Starting current (Ia/In) | 6.0 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M2 |
| Frame material | Aluminium |
| Mounting | B3 Foot |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 11.6 kg |
| Series | HEF31 |
| Brand | Universal Motors |
| Motor type code | HEF31 71G-4 |
| Base part number | HEF31 71G-4 |
| Full part number | HEF31 71G-4 B3 |
| Warranty | 12 months manufacturer |
| SKU | HEF31 71G-4 B3 |
| Power | 0.37 kW |
|---|---|
| Power (HP) | 0.5 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 1.04 A |
| Power factor (cos φ) | 0.71 |
| Efficiency class | IE2 |
| Efficiency | 72.7% |
| Rated torque | 2.52 Nm |
| Starting current (Ia/In) | 6.0 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M2 |
| Frame material | Aluminium |
| Mounting | B5 Flange |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 11.6 kg |
| Series | HEF31 |
| Brand | Universal Motors |
| Motor type code | HEF31 71G-4 |
| Base part number | HEF31 71G-4 |
| Full part number | HEF31 71G-4 B5 |
| Warranty | 12 months manufacturer |
| SKU | HEF31 71G-4 B5 |
UK delivery
Next working day to most of the UK, on a fully tracked courier - you'll have the tracking link the moment it leaves our racking.
★ 2pm Promise: place your order before 2pm and it is despatched the same working day. Guaranteed, not just aimed for.
Shipping worldwide
We ship to 70+ countries with rates calculated live at checkout, so the price you see is the price you pay - no surprise invoice a week later. Moving several units, or need pallet freight? Get a freight quote on WhatsApp.
Returns
Specified the wrong one? Send it back within 14 days, unused and in its original packaging, and we'll refund it. Built-to-order and modified items are the one exception. Read the full returns policy →
Availability
4 × B3 Foot mounting on the shelf in our UK warehouse, boxed and ready to go out today.
4 × B5 Flange mounting on the shelf in our UK warehouse, boxed and ready to go out today.
Which mounting do I need?
The mounting type describes how the motor is fixed in place and how the shaft connects to your equipment. Choosing the right one ensures a direct, drop-in fit.
- B3 (Foot) - bolts down through feet on the base. The most common general-purpose mounting.
- B5 (Flange) - a large machined flange with clearance holes bolts directly to your gearbox or machine face.
- B14 (Face) - a smaller spigot/face flange with tapped holes, for lighter direct-coupled loads.
- B35 / B34 - combination mountings that provide both feet and a flange for extra support.
Still not sure? Message an engineer with your machine or existing motor's frame and we'll confirm the exact mounting for you.
Send us a message
Ask our UK engineers about this motor - sizing, stock, or a custom quote. Required fields are marked with *.

