How to maintain the switch to extend service life?

Test switching monthly, clean dust, and check contacts. Annually, engineers calibrate interlocks, upgrade programs, and replace worn parts.

What is the function of the Dual Power Transfer Switch?

It automatically or manually switches to backup power (e.g., generator) when main power fails, ensuring continuous supply for key equipment.

Yes, free samples are available for testing and verification.

Reliable Performance Three-Phase Dual-Power Automatic Electrical Transfer Switch

Name: Reliable Performance Three-Phase Dual-Power Automatic Electrical Transfer Switch
Brand: Shandong Kaichuan Electric Power Equipment Co., LTD
SKU: 2130291352

Shandong, ChinaShandong Kaichuan Electric Power Equipment Co., LTD

US$1.00-999.00

1 tower

Product specifications

Size

Sample price:US$55.00/tower.Request sample

Product profile

Customization

Available

Type

Low-voltage

Structure

Three-column Disconnector

Model NO.

Electrical Switch

Grounding Mode

Grounding

Number of Poles

Three Pole

Grounding

Double Ground

Series

Three

Certification

ISO, GS, RoHS, CE, IS9001, ISO9001, ISO9002, ISO2000

Transport Package

Wooden Packaging

Specification

200mm*150mm

Trademark

SDKC

Origin

China

Key features

Built-in Mechanical Interlock: Ensures main and standby power supplies are never connected simultaneously without extra devices.

Comprehensive Certifications: ISO, GS, RoHS, CE, and IS9001 certified for global safety and quality standards.

Flexible Customization Options: Supports full customization, minor customization, and designs from samples or drawings.

Dual Power Compatibility: Compatible with mains, generators, and UPS systems for reliable backup power switching.

Free Sample Availability: Free samples provided to verify product quality before bulk orders.

Professional Installation Support: Designed for certified electrician installation with clear safety and wiring guidelines.

Long Service Life Maintenance: Engineers provide annual calibration, program upgrades, and part replacements to extend life.

Fast Switching Speed: PC-class models offer switching times between 50-250ms for critical applications.

Company profile

Shandong Kaichuan Electric Power Equipment Co., LTD

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao PortAverage Response Time: ≤1.57h

AI-Powered supplier vetting

SummarySDKC Shandong Kaichuan Electric Equipment Co., Ltd. is described as a high-tech enterprise integrating R&D, manufacturing, trade, and service, with products including electrical control cabinets, motors, frequency converters, electrical components, and high- and low-voltage switchgear. It reports broad customization and ODM capabilities, new products within the past year, and OEM service for well-known brands. Its finished-product inspection instructions are reportedly uniformly followed, while service procedures exist for supplier assessment, corrective actions, and complaints; however, written records are absent for the latter two mechanisms. The supplier reports no overseas warehouse, showroom, agent or branch, or offline trade-show participation, and lists zero overseas service countries. Financial credibility cannot be confirmed because the provided financial fields report zero operating revenue, costs, profits, margins, and ratios for the stated periods, without enough context to validate the...

Supplier typeThe supplier is described as a high-tech enterprise integrating R&D, manufacturing, trade, and service. Its stated business scope centers on producing, processing, and selling electrical control cabinets, motors, frequency converters, switchgear bodies, transformers, and related electrical equipment.

After-Sales capabilityThe supplier has written procedures and records for assessing effective service capability, and reports lead times within 15 workdays in both peak and off-season periods. However, corrective and preventive action and customer-complaint procedures have no written records, while overseas service coverage is limited: zero countries and no overseas warehouse, showroom, agent, or branch.

Financial creditThe supplier reports registered capital and describes itself as a large-scale enterprise, but the financial-capacity slices report zero operating revenue, costs, profits, margins, and current ratios for the stated periods. These figures provide no positive evidence of financial strength and raise a material credibility concern, although the supplied data does not explain whether the zeros reflect actual results or incomplete reporting.

R&D capabilityThe supplier reports R&D capability, at least one new product during the past year, and ODM services. Its company description also identifies R&D as part of its integrated operation, but no usable SDK is available.

Production capacityThe supplier states that it operates manufacturing facilities and equipment including copper-bar processing machinery and an assembly line. Its described production scope covers electrical control cabinets, motors, frequency converters, switchgear, transformers, and related equipment, while finished-product inspection instructions are reportedly available and uniformly followed.

Customization capabilityBoth relevant slices explicitly list customization from samples, designs, full customization, minor customization, and flexible customization. The supplier also reports ODM availability, supporting broad product-development and customization coverage.

Product Q&A

Q:How to avoid power backfeeding during installation?

The switch has built-in mechanical and electrical interlocks, so no additional device is needed. Strictly distinguish between common (N) and standby (R) power to avoid phase sequence errors.

Q:How to troubleshoot 'light on but not switching'?

Check if set to manual (switch to auto), adjust delay parameters (0-180s), or check sampling line contact. If trip light is on, check for overload or mismatched circuit breaker current.

Q:Is it compatible with generators and UPS?

Yes, supports mains-generator and mains-UPS modes. Link generator start signal (0-30s delay) and configure surge protection at UPS input/output to prevent overvoltage damage.

Q:What information is needed for a detailed quotation?

Provide product name, model, specification, quantity, current, voltage, power, and specific use case for an accurate quote.

Q:Difference between PC-class and CB-class switches?

PC-class offers fast switching (50-250ms) for critical loads like hospitals but needs external protection. CB-class integrates circuit breaker functions for industrial lines but has slower switching (2000-3000ms).