3-Phase Electric Motor 0.37kW 0.5Hp

3-Phase Electric Motor 0.37kW 0.5Hp is a small-capacity drive device utilizing a 380V industrial power supply. The device provides basic kinetic energy for light and medium-load machinery systems in restricted workspaces.

General Design of the 3-Phase Electric Motor 0.37kW 0.5Hp

The outer housing of the electric motor is cast from aluminum alloy to reduce weight and support rapid heat dissipation. The body surface features longitudinal ribs to expand the contact area with the airflow. The terminal box is located on top of the body, utilizing a rubber gasket for IP55 standard sealing. The external powder coating protects the device surface from industrial corrosive agents.

Internal Structure of the 3-Phase Electric Motor 0.37kW 0.5Hp

The internal structure of the 3-phase electric motor is manufactured and assembled according to industrial technical standards to maintain stable operating performance.

• Stator: The core is assembled from magnetic electrical steel sheets to reduce eddy current losses. The internal winding uses 100% pure copper, coated with Class F heat-resistant insulating varnish to prevent electrical short circuits.
• Rotor: A squirrel-cage shaft cast from alloy steel. This component undergoes dynamic balancing to reduce centrifugal force, maintain uniform magnetic gaps, and control mechanical vibration when the shaft rotates at high speed.
• Bearing: Centering ball bearings at both ends of the core shaft help reduce physical friction. This component comes with integrated dust seals and industrial heat-resistant lubricating grease, ensuring long-term smooth rotation.
• Cooling System: A plastic fan blade attached to the shaft tail generates airflow blowing along the heat-dissipation ribs. This fan assembly is protected by a perforated steel cover to shield against foreign objects entering during operation.

What Types of 3-Phase Electric Motor 0.37kW 0.5Hp Are Available?

Despite its small capacity of 0.37kW 0.5Hp, the product is still divided into 4 speed standards to serve various drive mechanisms:

3-Phase Motor 0.37kW 0.5Hp 2 Poles (2,800 – 3,000 rpm)

As the fastest speed line, it primarily performs tasks of generating large air volume or is used for machines requiring high rotational speed.

Specifications:

Code	71M
Shaft Diameter	14mm
Keyway	5mm
Flange Diameter	160mm
Weight	6kg
Dimensions	255mm * 145mm * 190mm
Mounting Type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Small-scale industrial exhaust fans, factory ventilation fans.
• Family household water pumps, small flow irrigation pumps.
• Small grinders, tile cutters, small wood saws requiring sharp cutting speed.

3-Phase Motor 0.37kW 0.5Hp 4 Poles (1,400 – 1,500 rpm)

Moderate speed and most widely used due to a good balance between speed and torque pulling force.

Specifications:

Code	71M
Shaft Diameter	14mm
Keyway	5mm
Flange Diameter	160mm
Weight	6.5kg
Dimensions	255 * 145mm * 190mm
Mounting Type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Conveyor belt drives, light goods sorting conveyors.
• Poultry plucking machines, meat grinders, small flour mixers.
• Chemical solution pumps, pneumatic diaphragm pumps.
• Automatic packaging and filling machine mechanisms.

3-Phase Motor 0.37kW 0.5Hp 6 Poles (900 – 1,000 rpm)

Slow-running line, larger machine frame (stepping up to size 80) to accommodate larger copper windings, generating noticeably stronger pulling force.

Specifications:

Code	80M
Shaft Diameter	19mm
Keyway	6mm
Flange Diameter	200mm
Weight	9kg
Dimensions	295mm * 165mm * 215mm
Mounting Type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Chemical agitators, paint mixers, or liquid fertilizer mixers.
• Aeration systems for oxygen generation in small and medium aquaculture ponds.
• Feed and grain metering screw conveyors.

Which Gearboxes Can the 3-Phase Electric Motor 0.37kW 0.5Hp Be Coupled With?

Thanks to its compact size and standard shafts (14mm, 19mm), the 0.37kW 0.5Hp motor is extremely easy to assemble with the following types of gearboxes:

• Cast Iron Worm Gearbox: WPA, WPS, WPX, WPO codes… (recommended size 50 or 60 for pulling force synchronization).
• Aluminum Housing Worm Gearbox: NMRV series is very popular, recommended size 040 or 050 to create an extremely aesthetic, square, and lightweight machine assembly.
• Helical Gearbox: Hollow shaft and solid shaft helical gearboxes (such as R-Series, mini F-Series) specialized for conveyors.
• Other Accessories: Combines well with pulleys, small chain sprockets, or adding a 0.37kW brake motor assembly for instant braking.

Instructions for Connecting the 3-Phase Electric Motor

To ensure precise and safe operation, you should first consult electric motor videos to clearly understand the structure as well as the position of the terminal posts on the motor.

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. After opening the cover, the wiring terminal system will be exposed inside. With standard 3-phase electric motors, this area typically has 6 clearly marked wire leads.

Step 2: Identify the Connection Terminals and 380V Power Supply

The wire leads in the terminal box are arranged in two rows. The bottom row, labeled U1, V1, W1, is the position used to connect the input power supply for 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 respectively to terminals U1, V1, W1. It is necessary to ensure correct positioning for stable motor operation.

Important Safety Note:

Cable lugs must be tightly secured to ensure good electrical contact, minimizing sparks that can cause short circuits and fires. Absolutely do not connect the power supply to the upper row of terminals (U2, V2, W2) as this may damage the motor windings.

Step 4: Close the Cover and Run a Test Operation

After completing the connection, tightly close the terminal box cover and secure the bolts to protect the device from dust and moisture. Apply power to test 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.

Adhering to the correct wiring procedure not only helps the system operate stably but also ensures long-term safety during use. Electric motor videos from Thanh Thai Motor will be a useful reference source for users in practice.

To learn more about products, quotations, and detailed instructions, you can access the video compilation in the electric motor video category – which aggregates comprehensive content directly implemented 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