What certifications does the product have?

The product is certified under ISO 9001 and CE standards.

What are the payment and delivery terms?

Payment terms are LC or T/T. Lead time is within 15 workdays off-season and one month during peak season.

Single Phase Pump Control Box AC Power Supply (S521)

Name: Single Phase Pump Control Box AC Power Supply (S521)
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 688991392

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

Negotiable

50 Pieces

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

S521

Mathematical Model

Linear

Signal

Continuous

Certification

ISO: 9001, CE

Transport Package

Paper Carton

Specification

Trademark

Leading Science & Technology

Origin

China

HS Code

90328990

Production Capacity

5000PCS/Year

Key features

Comprehensive Protection: Includes overload, stall, dry run, under/over voltage protection for universal pump safety.

Flexible Control Modes: Supports water level control via float switch/probe and pressure control via pressure switch.

Powerful Performance: Rated output power 0.37kw-2.2kw (0.5hp-3hp) for single phase AC220V-240V supply.

Smart Memory Function: Features push button calibration and memory retention for settings when power is off.

Certified Quality: Manufactured under ISO 9001 and CE certification standards for reliability.

Compact Design: Wall mounting unit with dimensions 170x155x8.5mm, suitable for confined spaces.

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: ≤7.20hTerms 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:What are the input voltage requirements?

The S521 control box requires a single phase AC power supply of 220V-240V at 50HZ or 60HZ.

Q:What protection features are included?

It provides overload protection, pump stall protection, dry run protection with sensor, under voltage protection, and over voltage protection.

Q:How can the pump be controlled?

The pump can be controlled by water level using a float switch or liquid probe, or by pressure using a pressure switch and pressure tank.

Q:What is the rated output power range?

The rated output power ranges from 0.37kw to 2.2kw, which corresponds to 0.5hp to 3hp.

Q:Does the device have a memory function?

Yes, it features a memory function that retains settings when power is off and allows for push button calibration.

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Single Phase Pump Control Box AC Power Supply (S521)