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Smart Small-Space Optimized Epoxy-Cast Dry-Type Transformer
US$1,000.00
1 Box
Product profile
Customization
AvailableType
Distribution Metering BoxStructure
Fixed BoardModel NO.
250ACertification
ISO9001:2000, VDE, CCCForm
Partly-welded TypeOperation Voltage
High VoltageSize
3 UintApplication Range
High-rise BuildingsShell Material
Stainless SteelShell Protection Grade
IP56Brand
YuandaStandard πConfiguration
≤125kVAExtra π Configuration
160-500kVARated Voltage
33kvRated Current
630AFrequency
50HzRated Capacity
50-2500kVAPfr Withstand
42/50/70/95tkvBil
75/125/170/185kvCrust Protection Grade
IP 23IP 23
Oil Type 55;Dry Type 65Noisy Grade
dBAppearance Dimensions
According to Primacy Wiring Circuit SchemaLV Equipment
Less Than 4000Transformer
3/75~150/3750Capacity
Under 2500kVA.Transport Package
WoodenSpecification
100x150x120Trademark
yuandaOrigin
ChinaHS Code
8504231100Production Capacity
100, 000PCS/YearKey features
IEC 61439 Compliance: Fully compliant with IEC 61439-1/2 and GB7251.1 standards with Type Test Certification.
High Safety Separation: Form 4B design ensures complete isolation between busbars, units, and terminals for safety.
IP65 Protection Option: Standard IP54 with optional IP65 protection for indoor or harsh environments.
50kA Short-Circuit Rating: Withstands 50kA short-time current for 1 second to prevent catastrophic failure.
Flexible Customization: Supports full customization from samples, designs, or minor adjustments to fit needs.
Quick Maintenance Design: Withdrawable circuit breakers allow safe, rapid testing and replacement without de-energizing.
Certified Quality: ISO 9001 certified with international approvals including CE, CB, UL, ETL, and CCC.
Fast Delivery: Standard lead time 4-6 weeks; customized projects 8-12 weeks after specification finalization.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 32 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryWenzhou Yuanda Electrical Equipment Co., Ltd. is a China-based manufacturer established in 1993, with 280 employees, more than 10 production lines, 50 quality-control staff, and stated output capacities for voltage stabilizers, miniature circuit breakers, and AC contactors. The supplier reports ISO 9001:2015 certification and product certifications including UL, CE, and 3C, as well as design patent technology. Its stated processes include advanced design software, testing equipment, and controls from raw-material procurement through finished products. However, the available information does not verify contract manufacturing, inventory, overseas services, ODM/OEM, SDK, environmental, or fire-drill capabilities. No customer cases or financial-strength evidence is provided. The audit record identifies TUV Rheinland and a valid report period, but the audit result is recorded as “0” without an explained interpretation.
Supplier typeThe supplier is explicitly identified as a manufacturer and a limited company located in Zhejiang, China. It has operated since 1993, supporting classification as an established manufacturing supplier.
CertificationsThe supplier reports ISO 9001:2015 certification and product certifications including US UL, EC CE, and 3C; it also states that it has held an industrial production permit and received export-advanced-enterprise recognition for three consecutive years. A TUV Rheinland audit report is listed with dates from November 4, 2025 to November 3, 2026, although the recorded audit result of “0” is not explained.
After-Sales capabilityThe supplier states that its marketing center provides comprehensive pre-sale, in-sale, and after-sale service to customers worldwide. However, overseas warehouse, showroom, and overseas agent or branch capabilities are all marked unknown, so the depth and delivery model of after-sales support cannot be fully verified.
R&D capabilityThe supplier reports using PROE/CAD and other design software, integrating decades of low-voltage electrical manufacturing experience, and holding product design patent technology. ODM, SDK, private-mold, 3D-design, and new-product R&D capabilities are marked unknown, limiting confirmation of broader innovation services.
Production capacityThe supplier reports more than 10 production lines, 50 quality-control staff, and stated annual capacities of 1,000,000 voltage-stabilizer boxes, 5,000,000 miniature circuit-breaker boxes, and 2,000,000 AC-contactor bags. It also describes testing equipment and process controls from raw-material procurement through finished production, providing explicit evidence of substantial production and quality-control infrastructure.
Product Q&A
Q:What standards does your switchgear comply with?
A:
Our switchgear is designed and manufactured in full compliance with the international IEC 61439 series of standards (specifically IEC 61439-1 & -2). We also hold complete Type Test Certification (TTA) from an independent, accredited laboratory to validate the performance and safety claims. Our products also meet relevant national standards such as GB7251.1.
Q:What is the meaning of 'Form 4B' separation?
A:
Form 4B is a classification per IEC 61439 that specifies the highest degree of internal separation within the assembly. It ensures complete isolation between the busbars, functional units (like circuit breakers), and outgoing terminal compartments. This enhances safety by containing any potential internal fault arc, allows for safer maintenance, and prevents faults in one unit from affecting others.
Q:What is the advantage of a withdrawable circuit breaker design?
A:
A withdrawable design allows for the circuit breaker to be easily disconnected, isolated, and physically moved to a 'test' or fully 'withdrawn' position without de-energizing the entire panel. This enables safe and rapid maintenance, testing, or replacement of the breaker, significantly minimizing downtime for critical power systems.
Q:What is the short-circuit withstand rating (Icw) of your panels?
A:
Our standard panels are rated for a short-time withstand current (Icw) of 50kA for 1 second. This means the assembly can withstand the thermal and electromagnetic stresses of a short-circuit fault of that magnitude for the specified time, allowing the upstream protective device to clear the fault without catastrophic failure. Higher ratings can be engineered for specific projects.
Q:What is the typical delivery lead time for a custom switchgear project?
A:
For standard configurations, the lead time is typically 4-6 weeks. For fully customized projects involving complex engineering, the lead time can range from 8 to 12 weeks. We provide a precise timeline upon finalization of the technical specifications and single-line diagram.
Send Inquiry
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Wenzhou Yuanda Electrical Equipment Co., Ltd.
Wenzhou Yuanda Electrical Equipment Co., Ltd.*Content:
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