Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame

Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame

B3 - Foot IE3
£11,889.78
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Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame
  • Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame
  • Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame
  • Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame

Datasheet & Drawing

Datasheet & Drawing

Datasheet & Drawing

Mounting Options

Mounting Options

Mounting Options

Wiring Diagram

Operations & Maintenance Manual

12 Months Warranty

Worldwide Shipping (in checkout)

100% Secure Payments

30 days Returns Policy
Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame

Amtecs 250kW (330HP) Three Phase Motor 6-Pole (1000 rpm) 355 Frame

Part Number: 250.06-355-IE3-B3-CI 250.06-355-IE3-B5-CI 250.06-355-IE3-B35-CI
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  • Technical Specifications
  • Power Output 250kW (330HP)
    Rated Speed 6-Pole (1000 rpm)
    Voltage 400/690V
  • Phase Three Phase Motor
    Frame Size 355
    IP Rating IP55
  • Efficiency IE3
    Type Cast Iron
    Insulation Class F
  • Shaft Diameter 100mm
    Shaft Length 210mm
    Shaft Keyway 28mm
  • Duty Cycle S1 Continous
    Weight 1744 Kg
  • Frame Material Cast Iron

Key Features

IE3 Efficiency

Exceeds IE3 efficiency standards for lower energy consumption, reduced running costs and a smaller carbon footprint.

Thermal Overload Protection

Automatic thermal reset switch prevents motor burnout from overload, increasing lifespan and reliability.

Multi-Mount Design

Removable feet allows the terminal box to be mounted on the top, left or right for installation flexibility.

Robust Housing

Durable metal terminal box provides impact protection and secure entry for industrial safety.

About this Electric Motor

The AMTECS 250kW (330HP) Three Phase Motor is engineered for reliable, high-efficiency operation in demanding industrial and commercial applications. This 6-Pole (1000 rpm) three-phase motor operates on a standard UK 400/690V three-phase supply and features a Cast Iron heavy duty 355 frame with B3 mounting. This motor is designed for high-vibration and rugged environments. Rated IE3 efficiency in line with ECO Design Rule 2019/1781, it delivers superior energy savings and lower operating costs compared with single-phase alternatives.

Key features include PTC Thermistors protection for constant temperature monitoring preventing motor burnout from overload, increasing the lifespan and reliability of the motor, a fixed-top terminal box, and a robust, durable construction. Ideal for powering compressors, pumps and conveyors. This three-phase induction motor provides self-starting capability, smooth operation, and exceptional reliability with minimal maintenance through re-greaseable bearings (160 frame and above). The fixed-feet design is ideal for high-vibration and rugged environments such as quarries, mining sites, and demanding manufacturing settings. Supplied with a 12-month warranty and available for free next-day UK delivery.

Supplied with a 12-month warranty and available for free next-day UK delivery.

  • 12 month warranty
  • IP55 Rated
  • UK Specification
  • Class F Insulation

About this Electric Motor

The AMTECS 250kW (330HP) Three Phase Motor is engineered for reliable, high-efficiency operation in demanding industrial and commercial applications. This 6-Pole (1000 rpm) three-phase motor operates on a standard UK 400/690V three-phase supply and features a Cast Iron heavy duty 355 frame with B5 mounting. This motor is designed for high-vibration and rugged environments. Rated IE3 efficiency in line with ECO Design Rule 2019/1781, it delivers superior energy savings and lower operating costs compared with single-phase alternatives.

Key features include PTC Thermistors protection for constant temperature monitoring preventing motor burnout from overload, increasing the lifespan and reliability of the motor, a fixed-top terminal box, and a robust, durable construction. Ideal for powering compressors, pumps and conveyors. This three-phase induction motor provides self-starting capability, smooth operation, and exceptional reliability with minimal maintenance through re-greaseable bearings (160 frame and above). The fixed-feet design is ideal for high-vibration and rugged environments such as quarries, mining sites, and demanding manufacturing settings. Supplied with a 12-month warranty and available for free next-day UK delivery.

Supplied with a 12-month warranty and available for free next-day UK delivery.

  • 12 month warranty
  • IP55 Rated
  • UK Specification
  • Class F Insulation

About this Electric Motor

The AMTECS 250kW (330HP) Three Phase Motor is engineered for reliable, high-efficiency operation in demanding industrial and commercial applications. This 6-Pole (1000 rpm) three-phase motor operates on a standard UK 400/690V three-phase supply and features a Cast Iron heavy duty 355 frame with B35 mounting. This motor is designed for high-vibration and rugged environments. Rated IE3 efficiency in line with ECO Design Rule 2019/1781, it delivers superior energy savings and lower operating costs compared with single-phase alternatives.

Key features include PTC Thermistors protection for constant temperature monitoring preventing motor burnout from overload, increasing the lifespan and reliability of the motor, a fixed-top terminal box, and a robust, durable construction. Ideal for powering compressors, pumps and conveyors. This three-phase induction motor provides self-starting capability, smooth operation, and exceptional reliability with minimal maintenance through re-greaseable bearings (160 frame and above). The fixed-feet design is ideal for high-vibration and rugged environments such as quarries, mining sites, and demanding manufacturing settings. Supplied with a 12-month warranty and available for free next-day UK delivery.

Supplied with a 12-month warranty and available for free next-day UK delivery.

  • 12 month warranty
  • IP55 Rated
  • UK Specification
  • Class F Insulation

Technical FAQ

Which direction do three phase motors rotate by default?

Most three phase motors run clockwise when viewed from the shaft end; swap any two phases to reverse rotation. Always refer to the wiring diagram or simply contact us for assistance.

Do Cast Iron motors have multi-mount mounting design?

No, the majority of Cast Iron motors have a solid fixed foot with a top terminal box.

What is the difference between 2 pole, 4 pole, 6 pole and 8 pole three phase motors?

Poles set speed at 50Hz: 2 pole ≈ 3000rpm, 4 pole ≈ 1500rpm, 6 pole ≈ 1000rpm, 8 pole ≈ 750rpm; choose to suit the driven machine.

Can I use this three phase motor with a Variable Frequency Drive (VFD/inverter)?

Yes, most standard three phase motors are inverter rated; confirm supply voltage and select a VFD with matching kW and current.

What are the different three phase motor mountings (B3, B14, B5, B34, B35) and which do I need?

B3 is foot mount, B5 is flange, B14 is face, B34 and B35 combine foot and flange; match to the existing motor and gearbox or pump connection.

What is the difference between aluminium and cast iron electric motor frames?

Cast iron motor frames are heavier and more rigid, offering excellent strength, vibration damping and durability for demanding industrial applications, while aluminium motor frames are lighter, corrosion resistant and easier to handle, making them ideal for general purpose use where weight and cost are important.

Our ENGINEERING Capabilities

Sourcing of Replacement Motors

Replacement motor specialist for obsolete, discontinued, or hard-to-find electric motors. We source exact replacements or upgraded alternatives for single-phase, three-phase, brake motors, and specialised applications.

Expert Technical Support

Free technical support from qualified motor engineers. Assistance with electric motor selection, customer modifications, application troubleshooting, installation guidance, and fault diagnosis.

Motor Repair & Modification

Professional electric motor repair and modification service for single-phase, three- phase complete with warranty. Services include rewinding, bearing replacements, shaft repairs, terminal box upgrades and customer mountings.