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High-Performance Nsx-400A 4p MCCB Circuit Breakers for Safety2.
US$110.33
4 Pieces
Product profile
Customization
AvailableBreaking Capacity
Low Voltage Circuit BreakersOperation
Electric TypeModel NO.
NSX-400A/4PSpeed
High-Speed Circuit BreakerArc-extinguishing Medium
AirInstallation
FixedStructure
MCCBPoles Number
3 Pole;4 PoleType
Circuit BreakerFunction
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent ProtectionCertification
CE, CCCRated Current
63, 125, 160, 200, 250, 400, 630, 800, 1250, 1600ADielectric Property
2500, 3000VRated Current of Frame Size Inm
63, 160, 200, 250LRated Current of The N Pole
=inRated Insulation Voltage Ui
400, 500, 690VUimp Rated Impulse Withstand Voltage
8000, 10000VTransport Package
Export PackingSpecification
3P, 4PTrademark
GWIECOrigin
Wenzhou, Zhejiang, ChinaHS Code
8536200000Production Capacity
50000Key features
Wide Voltage Range: Rated insulating voltage up to 950V and operating voltage up to 690V.
Multiple Protection Functions: Provides overload, short circuit, and undervoltage protection.
Compliant with Standards: Conforms to GB14048.2 and IEC 60947-2 international standards.
Customizable Ratings: Rated current customizable from 63A to 1600A based on frame size.
Dual Certification: Certified with CE and CCC marks for quality assurance.
Versatile Installation: Fixed installation structure suitable for 3-pole and 4-pole configurations.
Motor Protection: Protects squirrel cage motors from overload, short circuit, and undervoltage.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2017-07-19Nearest Port: ningboAverage Response Time: ≤10.86hTerms 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:What are the main protection functions of this circuit breaker?
A:
It provides conventional circuit breaker functions, failure protection, and specifically protects against overload, short circuit, and undervoltage.
Q:What is the rated insulating voltage and operating voltage?
A:
The rated insulating voltage is up to 950V, and the rated working voltage is 690V or below.
Q:What standards does this product conform to?
A:
The product conforms to GB14048.2 and IEC 60947-2 standards.
Q:What certifications are available for this circuit breaker?
A:
The circuit breaker is certified with CE and CCC marks.
Q:Can the rated current be customized?
A:
Yes, the rated current is customizable, ranging from 63A to 1600A depending on the frame size.
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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