What is the short circuit breaking capacity?

Icu is up to 120kA at 400V and 80kA at 690V.

What mounting modes are supported?

It supports both fixed and draw-out mounting modes.

What certifications does the product have?

The product is certified under ISO9001-2000 and CE standards.

4000A Air Circuit Breaker Mechanical Interlock for Automatic Transfer Switch

Name: 4000A Air Circuit Breaker Mechanical Interlock for Automatic Transfer Switch
Brand: WENZHOU JUNKE ELECTRIC CO., LTD.
SKU: 902744495

Zhejiang, ChinaWENZHOU JUNKE ELECTRIC CO., LTD.

US$100.00-1,000.00

1 Piece

Sample price:US$1000.00/piece.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Electric Type

Model NO.

MCCB

Speed

Normal Type Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Open Frame

Structure

ACB

Poles Number

Type

Circuit Breaker

Function

Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)

Certification

ISO9001-2000, CE

Rated Voltage

400/690VAC

Electrical Life(Time)

500-10000times

Material

ABS+Copper Busbar

Standard

IEC60947-2

Operate Way

Auto Parts

Warranty

2 Years

Range

Protect Building

Thermal Adjust

40%-100%

Magnetic Adjust

400%-1000%

Transport Package

Wooden

Specification

CE ROHS

Trademark

OEM

Origin

Zhejiang Yueqing

HS Code

85362000

Production Capacity

1000PCS/ Month

Key features

High Breaking Capacity: Up to 120kA at 400V and 80kA at 690V for robust industrial protection.

Durable Mechanical Life: Maintenance-free operation with up to 10,000 mechanical cycles.

Comprehensive Protection Functions: Includes overload, short circuit, undervoltage, and overvoltage protection.

Multiple Trip Accessories: Supports excitation, undervoltage, and alarm contacts for versatile control.

Flexible Mounting Options: Available in both fixed and draw-out mounting modes for easy installation.

Wide Current Range: Frame currents from 2000A to 6300A with rated currents up to 6300A.

Fast Operation Speed: Making and breaking time ranges from 23ms to 32ms for rapid response.

International Certifications: Certified under ISO9001-2000 and CE standards for quality assurance.

Company profile

WENZHOU JUNKE ELECTRIC CO., LTD.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2010-10-01Nearest Port: NINGBO, SHANGHAI, QINGDAOAverage Response Time: ≤10.43hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CIF, DDP, EXW

AI-Powered supplier vetting

SummaryWenzhou Junke Electric Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory. Established in 1992, it states that it conducts R&D, manufacturing, distribution, sales, and customer support for low- and high-voltage switchgear and related electrical products. The supplier reports ISO 9001 and ISO 14001 certifications, 6–10 R&D engineers, 11–20 quality-control staff, and 10 production lines. Its listed annual product capacities range from 100,000 to 150,000 pieces across several product categories, and it exports to multiple regions, with exports representing 41%–50% of total sales. It claims to provide customized solutions and close customer service, but the available evidence does not independently verify service performance, customization outcomes, financial strength, or a broad customer portfolio. Recent trade records show transactions with buyers in the Philippines and Sri Lanka.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, with its own R&D, production, sales, and customer-support facilities. Its product portfolio covers electrical equipment such as automatic transfer switches, circuit breakers, meters, capacitors, and distribution panels.

CertificationsThe supplier reports ISO 9001 and ISO 14001 management-system certifications and states that some products have been approved by CE and IEC certificates. The evidence supports certification holding, although it does not provide certificate numbers, validity dates, or coverage details.

R&D capabilityThe company states that it specializes in research and design and maintains its own R&D facilities, with 6–10 years of total R&D-engineer experience reported. This supports an established product-development function, but no patents, new-product records, testing programs, or R&D achievements are provided.

Production capacityThe supplier reports its own manufacturing facilities, 10 production lines, and stated capacities of 100,000 pieces for automatic transfer switches and power capacitors, 150,000 pieces for meter sockets/meters, and 110,000 pieces each for soft starters/inverters and circuit breakers. It also reports 11–20 quality-control staff, indicating substantial stated production and quality resources.

Customization capabilityThe company explicitly describes its service as designing, manufacturing, and delivering customized solutions, and says it can help clients research electrical sources for panels. The evidence confirms a stated customization offering, though it does not provide specific customized projects, engineering scope, or delivery examples.

Client casesThe supplier identifies export markets across South America, the Middle East, Southeast Asia, Eastern Asia, Oceania, and Africa, and reports export activity beginning in 2010. Trade records show transactions involving ENEX ELECTRIC PHILS INC in the Philippines and MICRO POWER ENGINEERING PVT LTD in Sri Lanka, but the records shown are limited to individual transactions and do not establish a broad or independently verified customer track record.