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IE3 is the short name of the "Premium" level in IEC 60034-30-1, the standard that ranks the efficiency of three-phase asynchronous motors. All 117 models that can be bought directly in the HEM Motor online store are based on the IE3 price list. On this page you will find where IE3 sits in the classification, the model range in the store, the cases in which IE3 is sufficient and the order to follow when buying.
IE3 Premium Within the IEC 60034-30-1 Levels
IEC 60034-30-1 groups line-fed motors into classes according to their losses. The HEM Motor 2026 technical catalog covers three of these classes: IE3 under the name Premium, IE4 under the name Super Premium and IE5 under the name Ultra Premium. All three are efficiency levels defined within the same frame system.
The class name does not change the motor's power or torque. Like the other levels in the catalog, IE3 models have IP55 protection and class F insulation, and they are wound for a 50 Hz supply. What separates the classes is the limit on the losses turned into heat while delivering the same shaft power. For detailed values per model, see the 2026 technical and product catalog.
Why the 117 Store Models Come From the IE3 List
The official HEM Motor price list is titled IE3 and dated 24.09.2026. Amounts are in Turkish lira and exclude VAT. The list is based on the standard build: foot-mounted B3, connected to a 400 V supply, IP55 protection and class F insulation.
The 117 models offered in the store were taken from this list. Instead of one combined price table, every model has its own product page where its price is shown. For instance, the aluminium-frame 90L-4 (1.5 kW, 4-pole) and the cast iron 180L-4 (22 kW, 4-pole) are listed on separate pages with separate prices. When a mounting type other than foot mounting or a non-standard option is requested, the price is confirmed in a quotation.
The IE3 Model Range in Brief
The IE3 models in the store are spread over 29 power steps; the smallest is 0.25 kW and the largest 355 kW. Each step is offered at three synchronous speeds, with 2, 4 and 6 poles.
- 36 aluminium-frame models: 0.25–11 kW.
- 81 cast iron frame models: 0.55–355 kW.
- In the overlapping 0.55–11 kW zone, one power–speed combination can be available in both aluminium and cast iron.
Frame steps and the speed–torque relationship at equal power are explained on the three-phase electric motors page, and the frame design at higher powers on the cast iron electric motors page. For the frame material decision, the answer to aluminium or cast iron will guide you.
When IE3 Is Enough and When to Consider a Higher Class
For many businesses, IE3 is a sensible middle ground between the price paid for the motor and the annual electricity bill. In machines that run intermittently, stop often during the day or operate only in certain seasons, the benefit of a higher class may be limited. Workshop machines, seasonal farm equipment and motors kept as spares belong to this group.
The picture changes if the motor runs non-stop through shifts. In pumps, fans or compressors that operate continuously, the energy paid for over time outweighs the one-off amount paid for the motor. In that case it makes sense to compare the IE4 Super Premium or IE5 Ultra Premium option at the quotation stage. Whatever class you choose, first make sure the power suits the real load of the machine; an oversized motor runs in an inefficient zone in every class.
| Class | Class name in the catalog | How to buy on the site | When to consider it |
|---|---|---|---|
| IE3 | Premium | Directly from the store; each model with its own price | Intermittent or medium-duration operation, standard B3 need, direct order from the store |
| IE4 | Super Premium | By quotation request | Highly loaded motors running long hours all year |
| IE5 | Ultra Premium | By quotation request | Continuous processes, investments where operating cost comes first |
The table is a general guide; the final class choice depends on running time, load and your electricity cost.
Three Factors That Set the Price of an IE3 Motor
Within the same class, power is the first factor; as kW rises, the winding, lamination stack and frame grow. The second is speed: more poles mean more torque at the shaft, which often means the next frame size up. The third is frame material; aluminium and cast iron frames are priced differently at the same power and speed.
Example amounts and how to read the list are given on the electric motor prices and three-phase motor prices pages. The quickest way to see the current price is to open the page of the relevant model; all models are listed in the electric motor store.
Steps to Follow When Buying an IE3 Motor
- Read the nameplate: Note the kW, speed and voltage of the motor you are replacing.
- Match the speed: If the machine's pulley, coupling or gearbox is set up for the current speed, stay at the same synchronous speed.
- Choose the frame: Up to 11 kW, decide between aluminium and cast iron according to the environment and vibration conditions.
- Check the mounting: The store price is for foot-mounted B3. If a flange is needed, see the flange-mounted B5/B14 motors or foot-and-flange B34/B35 motors page and state it in your order.
- Report special conditions: Requests such as frequency inverter drive, PTC/PT100 sensors or an anti-condensation heater affect price and type; send them before ordering.
Information Needed for an IE3 Order or Quotation
For a standard need you can pick the model in the store and order directly. If you are unsure, send us the following:
- The type of machine the motor will drive
- The required power and speed
- Supply voltage
- Mounting type: foot, flange, both or vertical
- Quantity
If the old motor's plate is hard to read, send a photo of the nameplate and we will identify the equivalent IE3 model together. If you would like an IE4 or IE5 comparison, mention it as well. You can send your request through the contact page and browse the models in our store.
Frequently Asked Questions
Are all the motors in the store IE3?
Yes. The 117 three-phase models on sale were taken from the IE3 price list dated 24.09.2026. IE4 and IE5 options are in the catalog and offered by quotation.
Does the price on the product page include VAT?
No. List prices exclude VAT; VAT is shown separately on the invoice.
Can I buy a flange-mounted IE3 motor at the store price?
Store prices are for the foot-mounted B3 build. For a flange or foot-and-flange build, choose the model with the same power and speed and state the mounting type in your order; the price is given in a quotation.
What should I compare when choosing an IE3 to replace an old motor?
Power, synchronous speed and IEC frame number should be the same. Compare shaft and flange dimensions using the frame size table; if in doubt, send a photo of the nameplate.
Can an IE3 motor run on an inverter?
For the three-phase series, use with a frequency inverter is assessed according to the application conditions. See the inverter-compatible motors page for details, and mention in your order that you will use a drive.
