AmTecs Cast Iron 55kW 4 Pole Motor – 250MB35 Foot & Flange Motor
AmTecs cast iron 55kW 4 pole three-phase electric motor in IEC 250MB35 format, built for heavy-duty industrial service on fans, pumps, blowers, belt drives, and machinery where a standard industrial running speed is preferred. This IE3 motor combines robust cast iron construction with B35 foot and flange mounting, giving users a flexible installation option where both base support and flange fixing are required.
This version runs at approximately 1485rpm on 50Hz supply and is designed for users who need a reliable foot and flange motor with IP55 protection, Class F insulation, and continuous-duty industrial performance.
Motor Overview
The AmTecs cast iron IE3 range is built for industrial duties where reliability, consistent thermal performance, and mechanical strength are important. This 55kW 4 pole motor uses a 250M IEC frame with B35 mounting, making it a practical option for replacements, OEM builds, and new machinery projects requiring a dependable mechanical fit.
Key Technical Specifications
- Motor Type: 3 phase cast iron electric motor
- Brand: AmTecs
- Power Output: 55kW
- Pole Configuration: 4 pole
- Nominal Speed: 1485rpm
- Efficiency Class: IE3
- Full Load Efficiency: 94.6%
- Power Factor: 0.87
- Frame Size: 250M
- Mounting Arrangement: B35 – Foot & Flange Mount
- Voltage: 400/690V 3 phase 50Hz
- Enclosure Protection: IP55
- Duty Cycle: S1 continuous duty
- Insulation Class: F
- Thermal Protection: PTC thermistors fitted as standard
- Approx. Full Load Torque: 353.7Nm
- Sound Pressure Level: 71dB(A)
- Weight: 456kg
Why Choose This AmTecs Cast Iron Motor?
- Heavy-duty cast iron build for demanding industrial environments and improved mechanical durability.
- Foot & Flange Motor format to suit compatible equipment and installation layouts.
- IE3 efficiency to support reduced running losses in continuous-duty applications.
- IP55 enclosure and Class F insulation for dependable day-to-day industrial service.
- PTC thermistors fitted to support suitable motor protection arrangements.
Typical Applications
This motor is commonly selected where combined foot and flange fixing is preferred, including pumps, fans, process equipment, and machinery needing added installation flexibility. It is well suited to industrial duties where a robust IEC motor replacement is needed and where the selected pole count matches the required shaft speed.
Internal Links & Compatible Options
Same motor power, different mounting options: jump to the AmTecs Cast Iron 55kW 4 Pole Motor mounting style you need (250M Frame).
Need a different motor power? Explore the closest available motor sizes around 55kW.
More Amtecs motors: Browse all 55kW motors | Browse all 55kW 4 Pole Motors
At Worm Gear Motors Online we offer competitive prices on genuine AmTecs cast iron 55kW 4 pole motors, with fast UK delivery and expert help choosing the correct frame and mounting style for your application.
Frequently Asked Questions
Where is a 55kW 4 pole motor normally used?
This motor size is often selected for material handling equipment, fans, pumps, process machinery, and other industrial drives that need reliable continuous-duty performance.
How fast will this 4 pole motor run?
With a 50Hz supply, the motor delivers a nominal running speed of approximately 1485rpm, subject to normal slip under load.
What mountings can I order?
Typical mounting arrangements in this range include B3 foot mount, B5 flange mount, and B35 foot and flange mount, depending on the frame and configuration needed.
Is the motor built for industrial environments?
Yes. The cast iron body, IP55 protection, and IE3 efficiency rating make it well suited to regular industrial service.
Does it include thermal protection?
The range is supplied with PTC thermistors fitted as standard to support suitable protection arrangements.
Do you supply advice before ordering?
Yes, if you need help matching frame size, speed, or mounting arrangement, we can point you toward the best option.
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