What is the after-sales service policy?

We provide free spare parts or controllers for maintenance and technical training based on order quantity.

How can I trust your company?

We have 15 years of experience, and many global pump suppliers use our controllers.

Where is your factory located?

Our factory is in Changsha, Hunan, China, accessible via air and high-speed train from major cities.

S531 Three Phase AC380V with Open Phase Protection Smart Pump Controller

Name: S531 Three Phase AC380V with Open Phase Protection Smart Pump Controller
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 2102737585

Hunan, ChinaHunan Leading Science & Technology Development Co., Ltd.

US$27.50

1 Piece

Sample price:US$35.00/piece.Request sample

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

S531

Mathematical Model

Linear

Signal

Continuous

Function

Automatic Control, Protection

Certification

ISO: 9001, CE

Condition

New

Customized

Material

ABS

Start Type

Dol

Qty of Controller Pump

Single Pumo

Rated Input Voltage

200-240V

Capacitor

Reserved Space for Installing Start Capacitor

Rated Output Powe 1r

0.37-2.2kw(0.5HP-3HP)

Transport Package

Paper Cartoon

Specification

6 pcs/carton

Trademark

Neutral

Origin

China

HS Code

9032899090

Production Capacity

100000PCS/Year

Key features

Comprehensive Protection: Features overload, stall, dry run, under/over voltage, and open phase protection.

Smart Control Modes: Supports liquid level, pressure, and drainage control via float switch, probe, or pressure switch.

Customizable Design: Offers customized start types (DOL), voltage, and power ratings for specific needs.

User-Friendly Interface: Includes LCD screen, push-button calibration, and fault/memory functions for easy operation.

High Durability: Designed for an 8-year lifespan with IP22 protection and wide temperature tolerance.

Wide Voltage Range: Compatible with AC380V-400V three-phase power, 50HZ/60HZ, for global applicability.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Hunan Leading Science & Technology Development Co., Ltd.

Hunan, China

Business Type: Manufacturer/Factory, Trading Company, OtherExport Year: 2005-06-08Nearest Port: Ningbo, Shanghai, GuangzhouAverage Response Time: ≤7.76hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, CFR

AI-Powered supplier vetting

SummaryThe supplier is identified as Hunan Leading Technology Development Co., Ltd., a professional technology provider focused since 2001 on intelligent pump controller production, R&D, global sales, and after-sales service. It provides 3D software design, ODM/OEM, and multiple customization options, supported by documented inspection, corrective-action, complaint-handling, quality-assurance, and traceability procedures. Export experience is stated at 18 years, with exports representing 21%–30% of sales, and standard peak- and off-season lead times within 15 working days. However, the supplier has no available SDK, reported no new products in the past year, lacks overseas agents, branches, warehouses, and showrooms, and has no valid manufacturing-capacity contract with its factory and related subcontractors. Evidence is insufficient for certification holding, financial credibility, and customer cases.

Supplier typeThe supplier is Hunan Leading Technology Development Co., Ltd., described as a professional technology supplier focused on pump control and protection solutions, including production, R&D, global sales, and after-sales service. Its company type is recorded as “Combined,” but the exact legal classification is not further explained.

After-Sales capabilityThe company states that it provides after-sales service, maintains in-stock service capacity, and has documented procedures and records for complaint handling, corrective and preventive actions, quality assurance, and traceability. However, it has no overseas agents or branches, no overseas warehouse, no overseas showroom, and reports zero countries with overseas services, limiting demonstrated international after-sales coverage.

R&D capabilityThe supplier is identified as a professional R&D technology supplier and provides 3D software design and ODM services. Nevertheless, it has no available SDK and reported no new products during the past year, so the evidence supports design and development capability but indicates limited recent product innovation.

Production capacityThe supplier reports production operations, documented finished-product inspection procedures, in-stock capability, 18 years of export experience, and lead times within 15 working days in both peak and off seasons. A material control weakness is that the factory and related subcontractors have no valid manufacturing-capacity contract; overseas warehousing is also unavailable.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, together with 3D software design and ODM services. It also reports OEM capability for well-known brands, providing direct evidence of broad customization and design-manufacturing support.

Client casesThe supplier states that it provides OEM services for popular brands, which indicates experience serving recognized-brand customers. No specific customer names, projects, products, or verifiable case details are provided, so the depth and quality of customer cases cannot be fully assessed.