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
90kW 750rpm 8 Pole 380-415V/660-690V 50Hz IE3 UM3C Universal Motors
Drop-in replacement - IEC frame dimensions.
SKU: UM3C 315L1-8 B3
£5,542.43
ex VAT
£6,650.92 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 UM3C 315L1-8 is a 90kW 8-pole three-phase induction motor in a cast iron frame. It is rated IE3 Premium Efficiency and runs at 735rpm 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 315L1-8 |
|---|---|
| Series | Universal Motors UM3C, cast iron, IE3 Premium Efficiency |
| Rated output | 90 kW (120 hp) |
| Poles / synchronous speed | 8 pole / 750 rpm |
| Rated speed | 735 rpm |
| Supply | 380-415V / 660-690V, 3-phase, 50Hz |
| Efficiency at full load | 93.4% |
| Rated current at 400V | 169.60 A |
| Power factor (cos φ) | 0.82 |
| Rated torque | 1169.3 Nm |
| Starting current (Ia/In) | 6.4 |
| Frame size | IEC 315L1 |
| Enclosure | TEFV, IP55 |
| Insulation class | F |
| Duty | S3-70% |
| Bearings | DE NU 319 / NDE 6319 C3 |
| Noise | 82 dB(A) |
| Weight (B3) | 1182 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 93.4% full-load efficiency, the UM3C 315L1-8 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 | 90.0 kW |
|---|---|
| Power (HP) | 125.0 HP |
| Poles | 8 |
| Full-load speed | 735 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 169.6 A |
| Power factor (cos φ) | 0.82 |
| Efficiency class | IE3 |
| Efficiency | 93.4% |
| Rated torque | 1169.3 Nm |
| Starting current (Ia/In) | 6.4 |
| Duty rating | S3-70% |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 315L1 |
| Frame material | Cast Iron |
| Mounting | B3 Foot |
| Bearings (DE / NDE) | DE NU 319 / NDE 6319 C3 |
| Noise level | 82 dB(A) |
| Weight | 1182.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 315L1-8-8 |
| Base part number | UM3C 315L1-8 |
| Full part number | UM3C 315L1-8 B3 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 315L1-8 B3 |
| Power | 90.0 kW |
|---|---|
| Power (HP) | 125.0 HP |
| Poles | 8 |
| Full-load speed | 735 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 169.6 A |
| Power factor (cos φ) | 0.82 |
| Efficiency class | IE3 |
| Efficiency | 93.4% |
| Rated torque | 1169.3 Nm |
| Starting current (Ia/In) | 6.4 |
| Duty rating | S3-70% |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 315L1 |
| Frame material | Cast Iron |
| Mounting | B5 Flange |
| Bearings (DE / NDE) | DE NU 319 / NDE 6319 C3 |
| Noise level | 82 dB(A) |
| Weight | 1182.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 315L1-8-8 |
| Base part number | UM3C 315L1-8 |
| Full part number | UM3C 315L1-8 B5 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 315L1-8 B5 |
| Power | 90.0 kW |
|---|---|
| Power (HP) | 125.0 HP |
| Poles | 8 |
| Full-load speed | 735 rpm |
| Frequency | 50 Hz |
| Voltage | 380-415V/660-690V |
| Phase | Three-Phase |
| Nominal current | 169.6 A |
| Power factor (cos φ) | 0.82 |
| Efficiency class | IE3 |
| Efficiency | 93.4% |
| Rated torque | 1169.3 Nm |
| Starting current (Ia/In) | 6.4 |
| Duty rating | S3-70% |
| Protection rating | IP55 |
| Insulation class | F |
| Frame size | 315L1 |
| Frame material | Cast Iron |
| Mounting | B35 Foot and Flange |
| Bearings (DE / NDE) | DE NU 319 / NDE 6319 C3 |
| Noise level | 82 dB(A) |
| Weight | 1182.0 kg |
| Series | UM3C |
| Brand | Universal Motors |
| Motor type code | UM3C 315L1-8-8 |
| Base part number | UM3C 315L1-8 |
| Full part number | UM3C 315L1-8 B35 |
| Warranty | 12 months manufacturer |
| SKU | UM3C 315L1-8 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
5 × B3 Foot mounting on the shelf in our UK warehouse, boxed and ready to go out today.
5 × B5 Flange mounting on the shelf in our UK warehouse, boxed and ready to go out today.
7 × 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 *.
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...