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Overcurrent Protection 4A MCB 3p Minimum Air Circuit Breaker
US$3.30
5 Pieces
Product profile
Customization
AvailableBreaking Capacity
Low Voltage Circuit BreakersOperation
Manual TypeModel NO.
PLSM-C4/3PSpeed
Normal Type Circuit BreakerArc-extinguishing Medium
AirInstallation
Rail MountingStructure
MCBPoles Number
3Type
Circuit BreakerFunction
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)Certification
ISO9001-2000, CE, CCCProduct Name
MCBRated Voltage
230/400VRated Current
up to 63ABreaking Curve
Curve CTransport Package
Carton PackingSpecification
46X23X33Trademark
GWIECOrigin
China ZhejiangProduction Capacity
200, 000PCS/MonthlyKey features
High Breaking Capacity: Passes 10kA breaking capacity with super ARC chamber and special contact block structure.
Multi-function Terminals: Connects copper connectors, round wires, or flat wires simultaneously on both sides.
Visible Contact Indication: Features visible contact block breaking indicator for safe wire isolation.
Flexible Operation Styles: Operation characteristics available in B, C, and D styles to meet different demands.
Under-side Power Input: Power input from underside to upside reduces wire length and cost.
Standard Compliance: Conforms to IEC 60898 and GB10963-1999 standards for safety and reliability.
Certified Quality: Holds ISO9001-2000, CE, and CCC certifications for global market access.
Low Maintenance Design: Designed for untrained personnel use with no need for regular maintenance.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2017-07-19Nearest Port: ningboAverage Response Time: ≤11.67hTerms 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 is the rated breaking capacity?
A:
The rated breaking capacity is 10,000A (10kA), achieved through a super ARC chamber and special contact block structure.
Q:What certifications does this MCB have?
A:
The product holds ISO9001-2000, CE, and CCC certifications and conforms to IEC 60898 and GB10963-1999 standards.
Q:Can the operation characteristic be customized?
A:
Yes, the operation characteristic can be made as B, C, or D style to meet different demands.
Q:What are the terminal connection options?
A:
Terminals are multi-function: they can connect copper connectors, round wires, or flat wires, and can combine flat and round wires simultaneously.
Q:Is maintenance required for this circuit breaker?
A:
No, the product is designed for untrained personnel use and requires no regular maintenance.
Send Inquiry
*To:
Yueqing Greenwich Imp & Exp Co., Ltd.
Yueqing Greenwich Imp & Exp Co., Ltd.*Content:
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