Amtecs 1.1kW 4 Pole Motor – 1.5HP 1500rpm IEC 90SB5 Flange Motor

This Amtecs 1.1kW 4 pole three-phase electric motor is built in IEC 90SB5 format with B5 mounting, making it suitable for conveyors, pumps, fans, compressors, and general industrial machinery needing a balanced all-round speed. This version is aimed at users who need flange motor, dependable IE3 efficiency, and IP55 protection for day-to-day industrial service.

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Motor Overview

This version uses a B5 mounting arrangement for large flange direct-coupled installation. In practice, that makes it a practical choice for pumps, gearboxes, mixers, and machines that bolt directly through a full flange. The 4 pole winding gives a nominal speed of 1500rpm, so it is normally selected where a versatile industrial speed is needed across a broad range of machinery.

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Why Choose This Configuration?

This exact model is best suited to buyers who specifically need an IEC 90SB5 motor in 1.1kW / 1.5HP. Compared with other mounting options in the same power and pole range, this version is intended for applications where a full-flange IEC motor is needed for direct registration onto the driven machine, while still keeping the same core electrical performance and aluminium IE3 construction.

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Technical Details

Rated power: 1.1kW
Pole count: 4 pole
Nominal speed: 1500
IEC mounting code: 90SB5
Mounting type: Flange Motor
Shaft / flange detail: 24mm Shaft x 200mm Flange
Voltage: 380-420 / 220-240 V Y/Δ 50Hz
Protection: IP55 TEFC
Efficiency: IE3
Construction: Aluminium frame, continuous-duty industrial motor

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Internal Links & Compatible Options

Same motor power, different mounting options: jump to the Amtecs 1.1kW 4 Pole Motor mounting style you need.

Need a different motor power? Explore the closest motor sizes around 1.1kW.

More Amtecs motors: Browse all 1.1kW motors Browse all AMTECS electric motors

Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator

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Frequently Asked Questions

What speed does a 4 pole motor run at?

A 4 pole electric motor operating on a 50Hz supply typically runs at around 1500rpm, with the actual full-load speed usually around 1400rpm due to motor slip.

What is this 1.1kW motor commonly used for?

This motor is commonly used on conveyors, pumps, fans, mixers, machine tools, gearboxes, and general industrial machinery where standard industrial running speed, reliable continuous-duty operation, and IEC interchangeability are important.

Is this motor suitable for direct flange mounting?

Yes, the B5 flange mount arrangement is intended for direct mounting onto compatible driven equipment where a full flange connection is required.

What should I check before replacing a 1.1kW motor?

When replacing a 1.1kW motor, check the frame size, pole count, B5 mounting arrangement, shaft dimensions, supply voltage, and the mechanical fit to the existing machine before ordering.

Can this motor run on an inverter drive?

Many industrial AC motors can operate with inverter drives (VFDs), but suitability depends on the exact application, duty cycle, cable length, and motor specification.

What does B5 mounting mean?

B5 is the standard IEC flange-mounted arrangement, designed for motors that mount directly to compatible gearboxes, pumps, fan housings, and other flanged industrial equipment.