1-Phase Electric Motor 3.0kW 4Hp

The 1-Phase Electric Motor 3.0kW 4Hp is an efficient electrical-to-mechanical energy conversion device commonly found in many household machinery setups. Featuring the advantage of using standard 1-phase voltage, this 1-Phase Electric Motor 3kW delivers high performance, durable operation, and suitability for household electrical conditions. Let’s explore the 1-phase electric motor in more detail with Thanh Thai Motor in the article below!

Overall Design of the 1-Phase Electric Motor 3.0kW 4Hp

An easily recognizable feature of the 1-Phase Electric Motor 4Hp is the presence of two capacitors mounted externally on the machine body. These two capacitors can be placed in two separate positions or neatly housed within the terminal box on top of the motor body. This design not only helps users easily distinguish it from other motor lines but also supports stable operation and more powerful starting in unstable voltage environments.

Internal Structure of the 1-Phase Electric Motor 3.0kW 4Hp

The 1-phase 3.0kW 4Hp motor is constructed from standard heavy-duty component assemblies:

• Stator: The stationary part consists of electrical steel laminations tightly assembled together. The internal slots contain working and starting windings made of 100% pure copper wire, ensuring it can withstand the load current of the 3kW power level.
• Rotor: The rigid steel core shaft and squirrel-cage core are precision-machined and meticulously dynamically balanced to ensure smooth machine operation without noise or centrifugal eccentricity.
• Capacitor: Integrates a dual capacitor assembly including a starting capacitor (providing initial torque) and a run capacitor (maintaining stable power).
• Bearings: Located at both ends of the shaft to guide rotational movement, using industrial lubricating grease to reduce frictional heat generation.
• Cooling fan: Mounted directly on the rear of the rotor shaft, circulating outside air to cool along the cast iron body.

What Types of 1-Phase Electric Motor 3.0kW 4Hp Are Available?

The 1-phase 3.0kW 4Hp motor line is divided into 2 main speed levels, meeting different transmission characteristics:

1-Phase Electric Motor 3.0kW 4Hp 2-Pole (2,800 – 3,000 rpm)

High-speed version, focusing on generating a high number of revolutions to increase flow rate or working velocity.

Specifications:

Code	112M
Shaft diameter	28mm
Keyway	8mm
Flange diameter	250mm
Weight	30kg
Dimensions	430 x 220 x 270 mm
Mounting type	Foot mounted (B3), Flange mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Centrifugal pumps: Driving large flow clean water pump heads, sprinkler irrigation pumps for industrial orchards.
• Centrifugal fans, industrial exhaust fans: Creating vacuum suction pressure to collect wood chips, mechanical workshop dust, or welding fume extraction.
• Cutting processing: Providing fast spindle speed for sliding table saws, ceramic tile cutters, small wood routers.

1-Phase Electric Motor 3.0kW 4Hp 4-Pole (1,400 – 1,500 rpm)

Medium rotational speed, providing strong pulling force (torque) and durable operation, less prone to overheating under prolonged load.

Specifications:

Code	132S
Shaft diameter	38mm
Keyway	10mm
Flange diameter	300mm
Weight	32kg
Dimensions	430 x 220 x 270 mm
Mounting type	Foot mounted (B3), Flange mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Air compressors: Installed for medium-sized piston air compressor heads, supplying compressed air for pneumatic equipment in repair garages.
• Food and animal feed processing machines: Running meat grinders, pellet mills, medium-scale dry powder grinders.
• Mixing mechanisms: Operating half-bag concrete mixers or granular material mixers.
• Conveyors: Combined with a gearbox to pull conveyors for transporting goods and bagged agricultural products in warehouses.

Which Gearboxes Can the 1-Phase Electric Motor 3.0kW 4Hp Be Combined With?

With a standard 28mm shaft design, the motor can be flexibly assembled with various gearboxes:

• Cast iron worm gearbox: Best compatible with WPA, WPS, WPX, WPO series size 80 or 100.
• Aluminum housing worm gearbox: Perfectly combines with NMRV gearbox size 075 or 090 for applications requiring aesthetics and corrosion resistance.
• Helical gearbox: Small coaxial or parallel shaft reducer units, specialized for automated assembly lines.
• Other drives: Compatible with 28mm shaft chain sprockets, B-groove pulleys, and flange couplings.

Instructions for Wiring a 1-Phase Electric Motor

Supplying power to a 1-phase motor requires precise handling to ensure safety due to the large starting current. Below are the steps for power wiring:

Step 1: Remove the terminal box cover

Use a screwdriver to remove the screws and open the capacitor box cover on the machine body. Operators can preview motor videos to clearly understand the positions of the internal wiring terminals.

Step 2: Connect the 220V power supply

Identify the 2 power supply terminals (usually marked Z1, U1 or see the diagram printed on the box cover). Connect the two 220V power wires (L and N) to these 2 terminals. Use a wrench to tighten the nuts to ensure electrical contact, avoiding heat generation or arcing.

Step 3: Operate and check the rotation direction

Tightly close the electrical box cover, turn on the circuit breaker to test run. If the shaft rotates in the reverse direction to the driven machine, immediately disconnect the power and cross the positions of the 2 wire ends of the running winding (working winding).

Step 4: Handling when the wiring diagram is missing

If the diagram is blurred or wire ends are difficult to distinguish, users should consult compilation videos on how to measure and wire to ensure correct technical operation.

Note: If the diagram is blurred or difficult to identify the wire ends, please refer to the compilation videos on how to measure and wire to ensure correct operation.

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

The 1-Phase Electric Motor 3.0kW 4Hp is an ideal choice for household and small-scale production models, thanks to its stable operation, energy-saving capability, and easy installation. If you are looking for a powerful and durable 1-phase electric motor, this is a reliable solution. Contact Thanh Thai Motor immediately for consultation and the best quote for a motor product that suits your needs!