Amtecs 4kW 4 Pole Motor – 5.5HP 1500rpm IEC 112MB3 Foot Mount

This Amtecs 4kW 4 pole three-phase electric motor is built in IEC 112MB3 format with B3 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 foot mount, dependable IE3 efficiency, and IP55 protection for day-to-day industrial service.

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Motor Overview

This version uses a B3 mounting arrangement for foot-mounted base installation. In practice, that makes it a practical choice for base-mounted machine beds, skids, conveyors, fans, and general fabricated structures. 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 112MB3 motor in 4kW / 5.5HP. Compared with other mounting options in the same power and pole range, this version is intended for applications where a foot-mounted IEC motor is needed for straightforward alignment and replacement, while still keeping the same core electrical performance and aluminium IE3 construction.

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Technical Details

Rated power: 4kW
Pole count: 4 pole
Nominal speed: 1500
IEC mounting code: 112MB3
Mounting type: Foot Mount
Shaft / flange detail: 28mm Shaft
Voltage: 660-725 / 380-420 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 4kW 4 Pole Motor mounting style you need.

Need a different motor power? Explore the closest motor sizes around 4kW.

More Amtecs motors: Browse all 4kW 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 4kW 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 pulley or coupling drives?

Yes, the B3 foot mount arrangement is commonly used for pulley-driven, chain-driven, and coupling-driven machinery where the motor is mounted directly onto a base or frame and aligned mechanically during installation.

What should I check before replacing a 4kW motor?

When replacing a 4kW motor, check the frame size, pole count, B3 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 B3 mounting mean?

B3 is the standard IEC foot-mounted arrangement, designed for motors that bolt down to a machine bed, baseplate, skid, or fabricated frame.