What is the after-sales service policy?

We provide free spare parts or controllers for maintenance/replacement based on order quantity, along with technical training.

What are the main protection functions?

It offers overload, pump stall, dry run, under/over voltage, repeat start, phase unbalance, phase reversal, and open phase protection.

What is the rated input voltage?

The rated input voltage is AC380V/AC400 Three Phase, 50HZ/60HZ.

L931 Automatic Submersible Water Pump Control with Dry Run Protection

Name: L931 Automatic Submersible Water Pump Control with Dry Run Protection
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 2104363435

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

Negotiable

10 Pieces

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

L931

Mathematical Model

Non-Linear

Signal

Continuous

Function

Automatic Control

Certification

ISO: 9001, CE

Condition

New

Customized

Material

ABS

Start Type

Dol(Direct on Line)

Qty of Controlled Pump

Single Pump

Rated Input Voltage

AC380V/AC400 Three Phase

Rated Output Power

0.75kw-4kw (1HP-5.5HP) 5.5kw-11kw (7.5HP-15HP) 15K

Transport Package

Paper Carton

Specification

6 pcs/carton

Trademark

Neutral

Origin

China

HS Code

9032899090

Production Capacity

100000PCS/Year

Key features

Dry Run Protection: Built-in protection against pump dry running to prevent motor damage.

Multi-Protection Functions: Includes overload, stall, under/over voltage, phase unbalance, and reverse protection.

Customizable Options: Offers customized start types, voltage, and power ratings to meet specific needs.

Smart Monitoring: Features LCD screen for fault records, running time, and remote monitoring via RS485.

Wide Application Scope: Suitable for water supply, drainage, irrigation, and industrial plants with various sensors.

Robust Build Quality: Constructed with ABS material, IP54 rated, and designed for an 8-year lifespan.

Flexible Control Modes: Supports control via float switch, pressure switch, or liquid level probes for automation.

ISO Certified Quality: Manufactured under ISO 9001 standards with strict quality control from raw materials.

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: ≤7.83hTerms 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.

Product Q&A

Q:Can I get samples for testing?

Yes, we can send you samples for testing. Please contact us for details.

Q:What is the delivery time?

For standard panels, it takes about 7 working days. For non-standard/custom orders, it takes 15-20 days.

Q:Do you accept OEM or ODM orders?

Yes, we have an engineering team and accept OEM and ODM, but there is a minimum ordering quantity requirement.

Q:How do you ensure product quality?

We follow ISO standards, controlling quality from raw materials to finished products. Each panel is fully assembled and strictly tested before shipping.

Q:What is the expected lifespan of the control panel?

The designed life time of the control panel is 8 years.