Amtecs 0.25kW 4 Pole Motor – 0.33HP 1500rpm IEC 71B5 Flange Motor
This Amtecs 0.25kW electric motor uses a 4 pole winding and IEC 71B5 mounting arrangement, making it a strong option for conveyors, pumps, fans, gearboxes, and general plant machinery. It is designed for continuous industrial service with IE2 efficiency and IP55 protection.
Motor Overview
Because this product uses Flange Motor, it is especially well suited to direct mounting to pumps, gearboxes, and flange-driven machinery. This 4 pole configuration is widely used where balanced all-round speed and torque are needed.
Why This Version?
This 0.25kW 4 pole Amtecs motor is intended for customers who need an IEC 71B5 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.
Typical Applications
- Replacement motor duties where IEC interchangeability matters
- OEM installations requiring a standard 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
Technical Details
- Rated power: 0.25kW
- Pole count: 4 pole
- Nominal speed: 1500
- IEC mounting code: 71B5
- Mounting type: 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
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
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.
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 0.25kW motor?
When replacing a 0.25kW 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.
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