1.1 kW 1500 RPM Three Phase Electric Motor – What Machine Builders Order It For

Nobody buys one of these. A 1.1 kW 1500 RPM three-phase motor leaves the shelf in tens, fitted inside machines that a builder ships on to somebody else, and the builder is buying repeatability rather than performance. Every dimension that changes between deliveries costs drawing time: shaft diameter, frame height, terminal box position, even the position of the earth stud inside the box. A supplier who quietly changes one of them between batches turns a settled assembly into a redesign.

The second thing an OEM buys is continuity of supply, because a machine in a catalogue has to be buildable in two years as well as this month. Ratings that come and go are worse than ratings that cost slightly more. Batch price, consistency and availability over time are the three things behind an OEM enquiry, and a one-off buyer asks none of them.

Motors here are built to IEC standards and held at a depth that suits repeat ordering, with the specification recorded against the account so the same machine arrives each time.

What Is a 1.1 kW 1500 RPM Electric Motor?

At roughly 1.5 HP the 1.1 kW four-pole frame runs near 1500 RPM and delivers steady torque for continuous service. It is the smallest rating most builders will specify for a machine intended to run all day.

Its dimensions let it sit inside a frame with little clearance, and the construction survives being crated, shipped, mounted by somebody else and then ignored for years, which is the real duty cycle of an OEM motor.

Typical Industrial Applications

Machines built around the 1.1 kW frame:

Ordered most often for:

  • Centrifugal pumps
  • Booster sets
  • Irrigation equipment
  • Ventilation units
  • Cooling fans
  • Small compressors
  • Conveyors
  • Mixers
  • Agitators
  • Packaging machines
  • Food processing equipment
  • Plastics machinery
  • Woodworking machines
  • Farm equipment
  • Textile machinery
  • Chemical process units
  • Recycling equipment
  • Workshop machines
  • Material handling gear
  • Light production lines

On every one of those the motor is a bought-in part, and the builder is judged on it. A failure inside somebody else’s machine costs a service visit and a reputation long before it costs the end user anything, which is why the cheapest available frame is rarely the one that gets specified twice.

Advantages of a 1.1 kW Electric Motor

A small motor earns its place by being uneventful.

What the 1.1 kW frame offers a machine builder:

  • Low electricity consumption
  • Efficient running at rated load
  • Steady torque output
  • Quiet operation
  • Low vibration
  • Long service life
  • Simple maintenance
  • Continuous-duty capability
  • Consistent performance between batches
  • Mechanical durability in transit and service

Those points decide whether a machine comes back under warranty for the motor.

What Affects 1.1 kW 1500 RPM Electric Motor Prices?

On a small rating the unit price is low and the quantity is high, so small differences multiply quickly.

What moves the figure:

  • IE3 Premium or IE4 Super Premium class
  • Copper winding content
  • Cast iron or aluminium frame
  • IP55 enclosure
  • Class F insulation
  • B3, B5 or B35 mounting
  • Bearing grade
  • Rotor balancing precision
  • Manufacturing technology
  • Production standards
  • Stock depth on the rating
  • Delivery schedule
  • Batch quantity
  • Raw material and market costs

A builder placing repeat orders should agree the specification once and hold it, rather than re-quoting each batch.

Technical Specifications

Every 1.1 kW motor is manufactured to IEC standards for continuous industrial operation.

Standard Technical Features

  • Power 1.1 kW
  • About 1.5 HP
  • Speed 1500 RPM
  • Four-pole design
  • Three-phase
  • Voltage 380–400 V
  • Frequency 50 Hz
  • Class IE3 Premium
  • IE4 Super Premium optional
  • Copper windings
  • Cast iron or aluminium housing
  • Protection IP55
  • Insulation Class F
  • Balanced rotor
  • Low vibration
  • Quiet running
  • Long-life bearings
  • Continuous duty
  • IEC construction
  • Mountings B3, B5, B35

Lower Energy Costs with High-Efficiency Motors

One 1.1 kW motor costs little to run; a hundred of them shipped inside machines cost the end users a great deal, and that is where the class marking earns its place on the datasheet.

IE3 Premium and IE4 Super Premium versions bring:

  • Lower electricity draw
  • Cooler running
  • Higher mechanical efficiency
  • Reduced losses
  • Longer maintenance intervals
  • A longer working life
  • Lower cost of ownership for the end user
  • Less waste heat inside the machine

For a machine builder the class on the plate is also a selling point in the specification sheet that goes out with the equipment.

Engineered for Long-Term Industrial Reliability

Construction is kept plain so the motor can be replaced anywhere in the world the machine ends up.

Key engineering features include:

  • Cast iron or aluminium body
  • Rotor balanced before assembly
  • Copper winding
  • Fan cooling
  • Frame strength for transport and service
  • Stable running under load
  • Long-life bearings

A part that any local workshop can service is worth more to a builder than an unusual one that performs slightly better.

Why Choose DRG Motor?

Repeat orders are handled on the same terms each time, which is the only thing a builder really needs from a motor supplier.

Our advantages include:

  • Depth of stock on repeat ratings
  • Dispatch to a schedule
  • Batch pricing
  • Engineering help at the design stage
  • Selection support for new machines
  • Service after delivery
  • Consistency between production batches
  • IE3 and IE4 both available
  • Warranty terms in writing
  • One contact for the account

Buy Your 1.1 kW 1500 RPM Electric Motor from DRG Motor

For batch pricing on the 1.1 kW 1500 RPM three-phase motor, send the quantity, the mounting and the shipping schedule.The list price and the lead time come back against that quantity.