Amtecs 0.25kW 4 Pole Motor – 0.33HP 1500rpm IEC 71B35 Foot & Flange Motor

For replacement motor duties and new machinery builds, this Amtecs 0.25kW 4 pole motor offers a practical IEC 71B35 mounting solution with IP55 protection, TEFC construction, and IE2 efficiency.

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Motor Overview

The foot-and-flange mounted design makes this motor suitable for applications where both flange location and foot support are useful. This 4 pole configuration is widely used where balanced all-round speed and torque are needed.

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Why This Version?

This 0.25kW 4 pole Amtecs motor is intended for customers who need an IEC 71B35 motor rather than a generic substitute. The published frame, mounting, and shaft/flange detail (14mm Shaft x 160mm Spigot) make it easier to match to replacement and OEM requirements.

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Typical Applications

• Replacement motor duties where IEC interchangeability matters
• OEM installations requiring a standard foot & flange motor motor
• General-purpose medium-speed industrial applications matched to 4 pole speed characteristics
• General 3 phase machinery including conveyors, pumps, fans, gearboxes, and general plant machinery

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Technical Details

• Rated power: 0.25kW
• Pole count: 4 pole
• Nominal speed: 1500
• IEC mounting code: 71B35
• Mounting type: Foot & Flange Motor
• Shaft / flange detail: 14mm Shaft x 160mm Spigot
• Voltage: 380-420 / 220-240 V Y/Δ 50Hz
• Protection: IP55 TEFC
• Efficiency: IE2
• 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 0.25kW 4 Pole Motor mounting style you need.

Need a different motor power? Explore the closest motor sizes around 0.25kW.

More Amtecs motors: Browse all 0.25kW 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 0.25kW motor commonly used for?

This motor is commonly used on small conveyors, fans, pumps, geared assemblies, packaging equipment, and compact OEM machinery where standard industrial running speed, reliable continuous-duty operation, and IEC interchangeability are important.

Why would I choose a B35 motor?

A B35 foot and flange motor is commonly chosen where the motor needs both a secure base-mounted position and a full flange interface to the driven equipment.

What should I check before replacing a 0.25kW motor?

When replacing a 0.25kW motor, check the frame size, pole count, B35 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 B35 mounting mean?

B35 combines foot mounting with a B5 flange, making it a practical choice where both base fixing and a full flange connection are required.