3-Phase Electric Motor 1.1kW 1.5Hp

The 3-Phase Electric Motor 1.1kW 1.5Hp is a small-capacity drive device operating on a 380V industrial power grid. This device provides basic mechanical force for light machinery, small conveyor systems, and automation mechanisms in medium-scale workshops.

General design of the 3-Phase Electric Motor 1.1kW 1.5Hp

The protective casing of this electric motor (1.1kW line) is minimalist in design to reduce weight while maintaining the necessary rigidity.

Manufacturers typically cast the housing in aluminum alloy or cast iron depending on the system’s heat dissipation requirements. The frame integrates multiple ribs running along the body to increase the contact surface area with airflow. The terminal box is located on top of the motor housing, sealed with rubber gaskets to prevent water and dust ingress according to the IP55 standard.

Internal structure of the 3-Phase Electric Motor 1.1kW 1.5Hp

To maintain stable operation at the 1.1kW power level, all internal components comply with industrial technical standards.

• Stator: The stationary magnetic core is assembled from electrical steel laminations with low magnetic resistance. The internal winding coils use 100% pure copper, vacuum-impregnated with class F heat-resistant insulating varnish.
• Rotor: The squirrel-cage rotor is cast as a single piece and undergoes precise dynamic balancing to ensure smooth operation without centrifugal vibration.
• Bearings: Installed at both ends of the shaft for centering, using sealed dustproof types with specialized lubricating grease.
• Cooling system: A synthetic resin centrifugal fan mounted at the rear of the shaft continuously pushes cooling air along the outer housing surface.

What are the types of 3-Phase Electric Motor 1.1kW 1.5Hp?

The 3-phase electric motor line is distributed with four basic rotational speed ranges, meeting diverse drive requirements for light-load systems. Below are the detailed technical specifications.

3-Phase Motor 1.1kW 1.5Hp 2-Pole (2,800 – 3,000 RPM)

Being the fastest type, the housing is usually made of aluminum to keep the motor lightweight and ensure prompt heat dissipation. Torque output is relatively low.

Technical specifications:

Code	80M
Shaft diameter	19mm
Keyway	6mm
Flange diameter	200mm
Weight	19kg
Dimensions	295mm * 175mm * 220mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Domestic water pumps, small-scale garden irrigation pumps.
• Industrial restroom ventilation exhaust fans, small air blowers.
• Tool grinders, handheld wood cutting machines, or small-scale mechanical processing machines requiring high cutting speeds.

3-Phase Motor 1.1kW 1.5Hp 4-Pole (1,400 – 1,500 RPM)

A national favorite motor series, most widely used due to its moderate speed, stable pulling force, and durable, smooth operation.

Technical specifications:

Code	90S
Shaft diameter	24mm
Keyway	8mm
Flange diameter	200mm
Weight	19kg
Dimensions	320mm * 195mm * 250mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Driving conveyor belts and product sorting lines in supermarkets and packaging plants.
• Dough mixers, meat paste grinders, sugarcane juicers, and tofu makers in the food industry.
• Small air compressor heads used in motorcycle repair shops.
• Chemical solution suction pumps or medium-flow wastewater pumps.

3-Phase Motor 1.1kW 1.5Hp 6-Pole (900 – 1,000 RPM)

Slower speed, provides better pulling force than the 4-pole series, and features a larger housing frame to accommodate more winding coils.

Technical specifications:

Code	90L
Shaft diameter	24mm
Keyway	8mm
Flange diameter	200mm
Weight	19kg
Dimensions	345mm * 195mm * 250mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Driving aeration fan systems to generate oxygen for shrimp and fish ponds.
• Chemical stirrers and liquid fertilizer mixers with moderate viscosity.
• Sludge scraping systems in small water supply and wastewater treatment plants.
• Light bucket elevator systems for transporting rice and agricultural products into silos.

3-Phase Motor 1.1kW 1.5Hp 8-Pole (700 – 750 RPM)

A specialized heavy-duty series, extremely slow speed, very strong pulling force, but with a power of 1.1kW, it is mainly applied to small specialized mechanisms.

Technical specifications:

Code	100L
Shaft diameter	28mm
Keyway	8mm
Flange diameter	200mm
Weight	19kg
Dimensions	385mm * 215mm * 270mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Light goods lifting hoist mechanisms in warehouses requiring extremely slow lifting and lowering speeds to ensure absolute safety.
• Biological thick sludge agitators and ultra-slow coagulant mixers.
• Slow-moving spiral tunnel conveyors.

Which gearboxes can the 3-Phase Electric Motor 1.1kW 1.5Hp be coupled with?

Thanks to its compact size and standard shaft diameters (19mm, 24mm, 28mm), the 1.1kW 1.5Hp motor is extremely easy to assemble with the following gearbox types:

• Cast iron worm gearbox: WPA, WPS, WPX, WPO codes… (recommended to use small sizes like 60, 70, or 80).
• Aluminum housing worm gearbox: The NMRV series is very popular; size 050 or 063 is recommended to optimize aesthetics and compactness.
• Helical gearbox: R, S, F codes (small sizes) for high-automation conveyor applications.
• Other accessories: Combines well with pulleys, small chain sprockets, or can be equipped with an additional 1.1kW 1.5Hp electromagnetic brake for emergency braking stops.

Instructions for wiring a 3-phase electric motor

To perform the procedure correctly, you should refer to electric motor videos beforehand to clearly understand the structure and positions of the terminal posts, thereby minimizing errors during execution.

Step 1: Remove the terminal box cover of the electric motor

Use a suitable screwdriver to remove the 4 fixing bolts on the terminal box cover. Once opened, you will see the internal terminal post system. For common 3-phase motors, this area typically has 6 clearly labeled wire ends.

Step 2: Identify the terminal posts and the 380V power supply

The wire ends in the terminal box are arranged in two rows. The bottom row, labeled U1, V1, W1, is the position used to supply input power to the motor.

Step 3: Connect the 3-phase power supply to U1, V1, W1

Prepare 3 phase wires from the 380V power supply and proceed to connect them to the U1, V1, W1 terminals respectively. Ensure correct positioning for stable motor operation.

Important safety note:

Cable lugs must be securely tightened to ensure good electrical contact, avoiding electrical sparks that cause short circuits and fires. Absolutely do not connect the power supply to the upper terminal row (U2, V2, W2) as this may damage the motor windings.

Step 4: Close the cover and test run

After completing the wiring, tightly close the terminal box cover and secure the bolts to protect the equipment from dust and moisture. Power on to check operation. If the motor rotates in the reverse direction of your preference, simply disconnect the power and swap the positions of any two of the three phase wires to reverse the rotation direction.

Strict adherence to the wiring procedure not only helps the system operate stably but also ensures safety throughout usage. Electric motor videos from Thanh Thai Motor will serve as a useful reference source for practical users.

To learn more about products, quotations, and detailed instructions, you can access the comprehensive video section in the electric motor video category – which compiles complete practical content directly executed by the technical team.

Warranty, shipping and commitment policy at Thanh Thai Motor

Warranty up to 24 months

All electric motor products distributed by Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers who purchase electric motors can completely rest assured with a transparent, fast, and professional after-sales policy.

Nationwide Shipping

Thanh Thai Motor supports nationwide shipping for all electric motors sold, ensuring safe and on-time delivery to every province across the country. Whether you are in the North, Central, or South, we are ready to serve you.

European Standard Quality – German Technology

Thanh Thai Motor sells electric motors manufactured with German technology, meeting European quality standards, ensuring durability, high efficiency, and stable operation for a long period – suitable for the strict requirements of industrial electric motors.

Competitive Prices – Attractive Offers for Dealers and Wholesale Customers

We commit to reasonable motor prices, offering the best electric motor products with high discount policies for bulk purchasers and distribution units. The more you buy – the better the profit.

Quality Commitment – Powerful Operation, Power Saving

Thanh Thai Motor sells electric motors wound with 100% copper wire, helping the machine run powerfully, consume less electricity, operate smoothly, and effectively reduce vibration – extending equipment lifespan. When purchasing an electric motor, prioritizing products with 100% copper core will be a wise decision, bringing long-term value.

At Thanh Thai Motor, we provide a full range of products, with various phases and capacities, such as:

• 220V electric motors (or 220V 1-Phase electric motors) are 1-Phase electric motors commonly chosen for many household appliances and light industrial equipment, offering convenience and efficiency.
• 380V electric motors are 3-Phase electric motors using three-phase power, commonly used in heavy industrial applications.

Full CO, CQ Certification Documents

Thanh Thai Motor provides the best quality electric motors. Each imported electric motor product from Thanh Thai Motor comes with a Certificate of Origin (CO) and a Certificate of Quality (CQ), meeting the requirements for large projects, constructions, and strict technical documentation.

Contact for Purchase

Do you need to buy an electric motor or seek advice on choosing an affordable electric motor that suits your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com