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Moulded Case Circuit Breaker Nsx-4p MCCB 4p 630A AC
US$15.72-88.00
50 Pieces
Product profile
Customization
AvailableBreaking Capacity
High Voltage Circuit BreakersOperation
Electric TypeModel NO.
NSX-4PSpeed
Normal Type Circuit BreakerArc-extinguishing Medium
AirInstallation
Rail MountingStructure
MCCBPoles Number
4Type
Circuit BreakerFunction
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)Certification
CERated Current
16-630AFrequency
50/60HzMaterial
Flame-Resistant PlasticPole
3,4Transport Package
CartonSpecification
43*31*39.5Trademark
GwiecOrigin
ZhejiangKey features
High Breaking Capacity: 90kA breaking capacity ensures reliable protection against short circuits.
Wide Current Range: Rated current adjustable from 16A to 630A for diverse applications.
Flame-Resistant Material: Constructed with flame-resistant plastic for enhanced safety.
Multiple Certifications: Certified by CE, CQC, and RoHS for global compliance and safety.
Comprehensive Protection: Provides overcurrent, short circuit, and overvoltage protection.
OEM and ODM Support: Customization available for tailored electrical solutions and designs.
Versatile Installation: Designed for rail mounting with 3 or 4 poles configuration.
Global Export Capability: Exports to over 6 regions including Europe, Americas, and Asia.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2017-07-19Nearest Port: ningboAverage Response Time: ≤15hTerms of Payment: LC, T/T, PayPalInternational Commercial Terms(Incoterms): FOB
AI-Powered supplier vetting
SummaryYueqing Greenwich Imp & Exp Co., Ltd. is identified as a China-based manufacturer/factory and limited company located in Zhejiang, with a factory in the Qiligang/Liushi area. The supplier reports ISO 9001 certification, 10 production lines, 6–10 R&D engineers, and 6–10 quality-control staff. Listed production capacities are 90,000 contactors, 210,000 circuit breakers, 30,000 switches, and 60,000 relays. Its product scope centers on electrical components including MCCBs, MCBs, contactors, relays, starters, and circuit breakers. Export activity reportedly began in 2017, with 41%–50% of sales from exports and exports conducted directly or through agents. The records provide limited evidence on after-sales service, financial credibility, innovation, customization, and customer-case depth. Trade records show one transaction associated with a Kazakhstan buyer in February 2025, but monetary figures are omitted.
Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and Limited Company, with its head office and factory located in Zhejiang, China. However, another record describes the company nature as a trading company, indicating a mixed or potentially inconsistent classification across the available data.
CertificationsThe supplier reports holding ISO 9001 certification for its management systems. This is explicit evidence of a documented quality-management certification, although no certification scope, issuing body, or validity dates are provided.
R&D capabilityThe supplier reports 6–10 years of total R&D-engineer experience, and its company description mentions continuous improvement and innovation. These provide some positive indication of development capability, but no specific patents, proprietary products, R&D projects, or new-product examples are supplied.
Production capacityThe supplier reports 10 production lines, 6–10 quality-control staff, and stated annual capacities of 90,000 contactors, 210,000 circuit breakers, 30,000 switches, and 60,000 relays. The same capacity figures appear consistently across two records, and a physical factory location plus ISO 9001 certification are reported, supporting a positive assessment of production capability.
Product Q&A
Q:Who are we?
A:
We are based in Zhejiang, China, started in 2010, with 51-100 employees. We sell to Eastern Europe, Mid East, South America, North America, Southeast Asia, and Western Europe.
Q:How can you guarantee quality?
A:
We always produce a pre-production sample before mass production and conduct a final inspection before shipment.
Q:What products can you buy from us?
A:
We supply Contactors, Circuit Breakers, Relays, Voltage Protectors, and ATS.
Q:Why should you buy from us not from other suppliers?
A:
We have more than 20 years of experience in supplying low-voltage and high-voltage electrical devices and provide comprehensive OEM and ODM manufacturing protection.
Q:What services can you provide?
A:
We accept FOB and CIF delivery terms, USD, EUR, and CNY payment currencies, and T/T, L/C, and Western Union payment types. We speak English, Chinese, Spanish, and Russian.
Send Inquiry
*To:
Yueqing Greenwich Imp & Exp Co., Ltd.
Yueqing Greenwich Imp & Exp Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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