What is the duty rating and cooling method?

It features S1 duty for 24-hour continuous working and uses IC411 cooling method.

What is the protection class and insulation class?

The protection class is IP54 or IP55, and the insulation class is Class F.

400V 50Hz AC Motor Three Phase High Efficiency Electric Motor

Name: 400V 50Hz AC Motor Three Phase High Efficiency Electric Motor
Brand: Hengshui Milestone Motor Technology Co., Ltd.
SKU: 1983551342

Hebei, ChinaHengshui Milestone Motor Technology Co., Ltd.

US$49.00-499.00

3 SET

Product profile

Application

Industrial

Operating Speed

Constant Speed

Number of Stator

Three-Phase

Model NO.

YE-Q

Species

Y, Y2 Series Three-Phase

Rotor Structure

Squirrel-Cage

Casing Protection

Protection Type

Number of Poles

2.4.6.8.10.12

Starting Mode

Direct on-line Starting

Certification

ISO9001, CCC

Brand

Milestone

Item

High Efficiency Electric Motor

Phase

Three Phase

Voltage

380/400V/415V/660V/Customized

Temperature

- 15~40 Degree

Rated Output

0.75-315kw(1-425HP)

Rated Frequency

50Hz(60Hz Available)

Duty

Cooling Method

IC411

Protection Feature

IP55/IP54

Insulation Class

F Class

Working Condition

Not Exceeding 1000m Above Sea Level

Transport Package

Wooden Case

Specification

According Frame Size

Trademark

Milestone

Origin

China

HS Code

850152

Production Capacity

200, 000 Sets/Annual Output

Key features

High Efficiency Series: Available in YE3, YE4, and YE5 series with output power ranging from 0.75kW to 315kW.

Customizable Voltage: Supports 380V, 400V, 415V, 440V, 660V, and fully customized voltage options.

Durable Construction: Features iron cast or aluminum housing with IP54/IP55 protection and Class F insulation.

Flexible Mounting: Offers B3, B5, B35, V1, V3 mounting types with fully customized options available.

Wide Application Scope: Suitable for water pumps, assembly lines, air compressors, fans, and food machinery.

Global Certifications: Complies with IEC, China CCC, ISO 9001, and CE international standards.

Reliable Performance: S1 duty rating for 24-hour continuous working with IC411 cooling method.

Fast Delivery: Standard delivery time is 10-30 working days with secure carton or wooden case packaging.

Company profile

High Repeat Buyers ChoiceExhibition ExperienceFull CustomizationManagement Certification

Hengshui Milestone Motor Technology Co., Ltd.

Hebei, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤3.59h

AI-Powered supplier vetting

SummaryHengshui Milestone Motor Technology Co., Ltd. is identified as a China-based manufacturer/factory in Hebei producing electric motors, including induction, three-phase, special, explosion-proof, high-voltage, and variable-frequency motors. The supplier reports extensive product certifications, including CE, China 3C, CQC, China energy-saving, explosion-proof, KA, and MA certifications, as well as ISO9001, ISO14001, and ISO45001 management-system certifications. Its business description states that it is an early developer and promoter of energy-saving Y-series motors in China and focuses on motor research. A TUV Rheinland audit record is listed as valid from May 19, 2025 to May 18, 2026, but the audit result is coded as “0” without an interpretation. Evidence is insufficient to confirm after-sales services, financial credibility, innovation services such as ODM or SDK support, production scale, customization, or customer cases. Several supplier capability fields are explicitly marked unknown.

Supplier typeThe supplier is identified as Hengshui Milestone Motor Technology Co., Ltd., a China-based manufacturer/factory located in Hebei and operating in the motor manufacturing sector. However, another record describes its company nature as a trading company, creating a classification inconsistency that should be clarified.

CertificationsThe supplier reports CE, China 3C, CQC, China energy-saving, explosion-proof, KA, and MA product certifications, along with ISO9001, ISO14001, and ISO45001 management-system certifications. A TUV Rheinland audit is also recorded for the period from May 19, 2025 to May 18, 2026, although the coded audit result is not explained.

R&D capabilityThe company states that it focuses on motor research and was among the early Chinese enterprises to design, produce, and promote new energy-saving Y-series motors. Nevertheless, ODM, SDK, private-mold, 3D-design, and new-product R&D service statuses are all unknown, so the breadth of its current innovation services cannot be confirmed.

Production capacityThe supplier is listed as a manufacturer/factory offering multiple electric-motor categories, and its company description characterizes it as a large second-tier national enterprise and a top-500 Chinese machinery enterprise. However, manufacturing capacity, inventory capability, order fulfillment details, and production scale are not sufficiently documented; the order fulfillment field contains only an unexplained code.