Amtecs 4kW 6 Pole Motor – 5.5HP 1000rpm IEC 132M1B5 Flange Motor

This Amtecs 4kW 6 pole three-phase electric motor is built in IEC 132M1B5 format with B5 mounting, making it suitable for mixers, geared drives, agitators, feeders, and process machinery where slower running and smoother torque delivery are preferred. 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 6 pole winding gives a nominal speed of 1000rpm, so it is normally selected where reduced shaft speed is preferred without moving into very large frame sizes too quickly.

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Why Choose This Configuration?

This exact model is best suited to buyers who specifically need an IEC 132M1B5 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 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: 4kW
Pole count: 6 pole
Nominal speed: 1000
IEC mounting code: 132M1B5
Mounting type: Flange Motor
Shaft / flange detail: 38mm Shaft x 300mm Flange
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 6 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 6 pole motor run at?

A 6 pole electric motor operating on a 50Hz supply typically runs at around 1000rpm, with the actual full-load speed usually around 930–970rpm 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 lower 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 4kW motor?

When replacing a 4kW 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.