Can You Use a Variable Frequency Drive on Any Motor?
A variable frequency drive (VFD) provides adjustable motor speed by varying the frequency and voltage supplied to an electric motor. However, not e...
5.0★★★★★
12 reviews
0.25kW 1500rpm 4 Pole 220-240V/380-415V 50Hz IE2 UMHA Universal Motors
Drop-in replacement - IEC frame dimensions.
SKU: UMHA 71K-4 B3
£66.69
ex VAT
£80.03 inc. VAT
Mounting
Order in -
→ despatched today, arrives tomorrow before 5pm
★ 2pm Promise: place your order before 2pm and it is despatched the same working day. Guaranteed, not just aimed for.
Not sure this is the right motor?
Talk to a UK engineer. Average response < 5 min. 100% no-obligation
Larger quantities?
Get in touch for a custom quote.
The Universal Motors UMHA 71K-4 is a 0.25kW 4-pole three-phase induction motor in an aluminium frame. It is rated IE2 High Efficiency and runs at 1400rpm on a 50Hz supply. The winding is dual voltage, 220-240V delta or 380-415V star, so it can run from a single-phase-input inverter or direct-on-line from a three-phase supply.
Technical specifications
| Part number | UMHA 71K-4 |
|---|---|
| Series | Universal Motors UMHA, aluminium, IE2 High Efficiency |
| Rated output | 0.25 kW (0.34 hp) |
| Poles / synchronous speed | 4 pole / 1500 rpm |
| Rated speed | 1400 rpm |
| Supply | 220-240V / 380-415V, 3-phase, 50Hz |
| Efficiency at full load | 68.5% |
| Rated current at 400V | 0.76 A |
| Power factor (cos φ) | 0.70 |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Frame size | IEC 71M1 |
| Enclosure | TEFV, IP55 |
| Insulation class | F |
| Duty | S1 continuous |
| Bearings | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise | 64 dB(A) |
| Weight (B3) | 5.4 kg |
Why choose a small aluminium IE2 motor
An aluminium frame keeps the motor light and easy to handle, resists corrosion and dissipates heat well. At 0.25kW this motor sits in the power range where IE2 High Efficiency is the standard class for general-purpose motors. At 68.5% full-load efficiency, the UMHA 71K-4 is rated IE2 on the manufacturer's datasheet.
Typical applications
- Small pumps and fans
- Light conveyors and packaging machinery
- Mixers and agitators
- General-purpose light industrial drives
Download the datasheet for each mounting from this page. For help with sizing, starting method or a matched drive, contact our engineers.
| Power | 0.25 kW |
|---|---|
| Power (HP) | 0.34 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 0.76 A |
| Power factor (cos φ) | 0.7 |
| Efficiency class | IE2 |
| Efficiency | 68.5% |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M1 |
| Frame material | Aluminium |
| Mounting | B3 Foot |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 5.4 kg |
| Series | UMHA |
| Brand | Universal Motors |
| Motor type code | UMHA 71K-4-4 |
| Base part number | UMHA 71K-4 |
| Full part number | UMHA 71K-4 B3 |
| Warranty | 12 months manufacturer |
| SKU | UMHA 71K-4 B3 |
| Power | 0.25 kW |
|---|---|
| Power (HP) | 0.34 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 0.76 A |
| Power factor (cos φ) | 0.7 |
| Efficiency class | IE2 |
| Efficiency | 68.5% |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M1 |
| Frame material | Aluminium |
| Mounting | B5 Flange |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 5.4 kg |
| Series | UMHA |
| Brand | Universal Motors |
| Motor type code | UMHA 71K-4-4 |
| Base part number | UMHA 71K-4 |
| Full part number | UMHA 71K-4 B5 |
| Warranty | 12 months manufacturer |
| SKU | UMHA 71K-4 B5 |
| Power | 0.25 kW |
|---|---|
| Power (HP) | 0.34 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 0.76 A |
| Power factor (cos φ) | 0.7 |
| Efficiency class | IE2 |
| Efficiency | 68.5% |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M1 |
| Frame material | Aluminium |
| Mounting | B14 Face |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 5.4 kg |
| Series | UMHA |
| Brand | Universal Motors |
| Motor type code | UMHA 71K-4-4 |
| Base part number | UMHA 71K-4 |
| Full part number | UMHA 71K-4 B14 |
| Warranty | 12 months manufacturer |
| SKU | UMHA 71K-4 B14 |
| Power | 0.25 kW |
|---|---|
| Power (HP) | 0.34 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 0.76 A |
| Power factor (cos φ) | 0.7 |
| Efficiency class | IE2 |
| Efficiency | 68.5% |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M1 |
| Frame material | Aluminium |
| Mounting | B35 Foot and Flange |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 5.4 kg |
| Series | UMHA |
| Brand | Universal Motors |
| Motor type code | UMHA 71K-4-4 |
| Base part number | UMHA 71K-4 |
| Full part number | UMHA 71K-4 B35 |
| Warranty | 12 months manufacturer |
| SKU | UMHA 71K-4 B35 |
| Power | 0.25 kW |
|---|---|
| Power (HP) | 0.34 HP |
| Poles | 4 |
| Full-load speed | 1400 rpm |
| Frequency | 50 Hz |
| Voltage | 220-240V/380-415V |
| Phase | Three-Phase |
| Nominal current | 0.76 A |
| Power factor (cos φ) | 0.7 |
| Efficiency class | IE2 |
| Efficiency | 68.5% |
| Rated torque | 1.71 Nm |
| Starting current (Ia/In) | 4.5 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 71M1 |
| Frame material | Aluminium |
| Mounting | B34 Foot and Face |
| Bearings (DE / NDE) | DE 6202 2Z C3 / NDE 6202 2Z C3 |
| Noise level | 64 dB(A) |
| Weight | 5.4 kg |
| Series | UMHA |
| Brand | Universal Motors |
| Motor type code | UMHA 71K-4-4 |
| Base part number | UMHA 71K-4 |
| Full part number | UMHA 71K-4 B34 |
| Warranty | 12 months manufacturer |
| SKU | UMHA 71K-4 B34 |
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
46 × B3 Foot mounting on the shelf in our UK warehouse, boxed and ready to go out today.
24 × B5 Flange mounting on the shelf in our UK warehouse, boxed and ready to go out today.
20 × B14 Face mounting on the shelf in our UK warehouse, boxed and ready to go out today.
29 × B35 Foot and Flange mounting on the shelf in our UK warehouse, boxed and ready to go out today.
15 × B34 Foot and Face 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 *.
Why Choose Us
Quality Products
We only stock products from trusted manufacturers known for their durability and performance. Each item in our inventory is rigorously tested before it leaves the factory to meet our high standards.
Affordable Prices
By sourcing directly from manufacturers and maintaining efficient operations, we keep our prices low without compromising on quality.
Next Day Delivery
We understand that time is money in the industrial sector. That is why we offer next day delivery on all orders placed by 3pm, ensuring you get the parts you need, when you need them.
UK Stock
All our products are held in UK stock, allowing us to provide fast and reliable shipping across the country. No long wait times or complicated import processes - just straightforward service.
Customer Support
Our knowledgeable customer support team is always ready to assist with any queries or technical questions you may have. We are here to ensure you find the right products for your specific needs.
Brands we stock
Industry News
How to Choose the Right Industrial Gearbox for Your Electric Motor
Selecting the correct gearbox for an electric motor needs more than matching shaft sizes or choosing a suitable reduction ratio. The gearbox must t...
Three-Phase DC Drives Explained: Operation, Applications and Selection
Three-Phase DC Drives Explained: Operation, Applications and Selection A three-phase DC drive converts three-phase AC electrical power into contro...