IE4 motors represent the Super Premium efficiency tier defined by IEC 60034-30-1, cutting losses noticeably compared with IE3 units of the same rating. DRG Motor supplies its IE4 range for continuously running plants and lines with long expected service lives.

What the IE4 Efficiency Class Means

An efficiency class shows how much of the electricity drawn from the grid is converted into shaft power. IE4 motors sit above the IE1 standard and IE2 high-efficiency levels, and one step beyond the IE3 premium tier. The gain comes from rotor and stator design, low-loss laminations and improved winding fill.

Which Plants Should Choose IE4?

In gearboxes, compressors, pumps and continuously rotating fans that run thousands of hours per year, the IE4 purchase decision shows up in the cumulative difference on the energy bill. For a line running in S1 continuous duty, every efficiency step feeds directly into lifetime running cost.

Technical Features of DRG IE4 Motors

DRG IE4 motors are offered on a 400 V / 50 Hz supply with speed options from 2 to 6 poles. IP55 protection resists dust and splashing water, while Class F insulation leaves a generous thermal margin. The housing can be specified in aluminium or cast iron depending on the application.

What to Check When Buying an IE4 Motor

A correct choice weighs the required power, speed, mounting type (B3 foot, B5 flange, B14 face) and operating environment together. DRG Motor provides current quotations and engineering support to clarify stock and delivery across the 0.55–355 kW range.