4kW 750rpm 8 Pole 380-415V/660-690V 50Hz IE3 UM3C Universal Motors
The Universal Motors UM3C 160M1-8 is a 4kW 8-pole three-phase induction motor in a cast iron frame. It is rated IE3 Premium Efficiency and runs at 720rpm on a 50Hz supply. The winding is dual voltage, 380-415V delta or 660-690V star, so it suits direct-on-line or star-delta starting.
Technical specifications
| Part number | UM3C 160M1-8 |
|---|---|
| Series | Universal Motors UM3C, cast iron, IE3 Premium Efficiency |
| Rated output | 4 kW (5.5 hp) |
| Poles / synchronous speed | 8 pole / 750 rpm |
| Rated speed | 720 rpm |
| Supply | 380-415V / 660-690V, 3-phase, 50Hz |
| Efficiency at full load | 84.8% |
| Rated current at 400V | 9.30 A |
| Power factor (cos φ) | 0.73 |
| Rated torque | 53.0 Nm |
| Starting current (Ia/In) | 6.0 |
| Frame size | IEC 160M1 |
| Enclosure | TEFV, IP55 |
| Insulation class | F |
| Duty | S1 continuous |
| Bearings | DE 6309 C3 / NDE 6309 C3 |
| Noise | 68 dB(A) |
| Weight (B3) | 120 kg |
Why choose a cast iron IE3 motor
A cast iron frame is stiffer and more robust than aluminium, and it handles heavy-duty and harsh environments well. IE3 Premium Efficiency keeps running costs down on motors that run for long hours. At 84.8% full-load efficiency, the UM3C 160M1-8 is rated IE3 on the manufacturer's datasheet.
Typical applications
- Pumps and fans
- Compressors
- Conveyors and material handling
- Mixers, crushers and process machinery
Download the datasheet for each mounting from this page. For help with sizing, starting method or a matched drive, contact our engineers.
| Power | 4.0 kW |
|---|---|
| Power (HP) | 5.5 HP |
| Poles | 8 |
| Full-load speed | 720 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 9.3 A |
| Power factor (cos φ) | 0.73 |
| Efficiency class | IE3 |
| Efficiency | 84.8% |
| Rated torque | 53.0 Nm |
| Starting current (Ia/In) | 6.0 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 160M1 |
| Frame material | Cast Iron |
| Mounting | B3 Foot |
| Bearings (DE / NDE) | DE 6309 C3 / NDE 6309 C3 |
| Noise level | 68 dB(A) |
| Weight | 120.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 160M1-8-8 |
| Base part number | UM3C 160M1-8 |
| Full part number | UM3C 160M1-8 B3 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 160M1-8 B3 |
| Power | 4.0 kW |
|---|---|
| Power (HP) | 5.5 HP |
| Poles | 8 |
| Full-load speed | 720 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 9.3 A |
| Power factor (cos φ) | 0.73 |
| Efficiency class | IE3 |
| Efficiency | 84.8% |
| Rated torque | 53.0 Nm |
| Starting current (Ia/In) | 6.0 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 160M1 |
| Frame material | Cast Iron |
| Mounting | B5 Flange |
| Bearings (DE / NDE) | DE 6309 C3 / NDE 6309 C3 |
| Noise level | 68 dB(A) |
| Weight | 120.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 160M1-8-8 |
| Base part number | UM3C 160M1-8 |
| Full part number | UM3C 160M1-8 B5 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 160M1-8 B5 |
| Power | 4.0 kW |
|---|---|
| Power (HP) | 5.5 HP |
| Poles | 8 |
| Full-load speed | 720 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 9.3 A |
| Power factor (cos φ) | 0.73 |
| Efficiency class | IE3 |
| Efficiency | 84.8% |
| Rated torque | 53.0 Nm |
| Starting current (Ia/In) | 6.0 |
| Duty rating | S1 |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 160M1 |
| Frame material | Cast Iron |
| Mounting | B35 Foot and Flange |
| Bearings (DE / NDE) | DE 6309 C3 / NDE 6309 C3 |
| Noise level | 68 dB(A) |
| Weight | 120.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 160M1-8-8 |
| Base part number | UM3C 160M1-8 |
| Full part number | UM3C 160M1-8 B35 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 160M1-8 B35 |
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
9 × 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.
9 × B35 Foot and 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 *.