About Us

A national high-tech PV auxiliary parts manufacturer

YEPV SUPPLY CO., LTD — founded in 2010, 16 years of manufacturing experience in gPV inline fuse, Y-splitter, MC4 compatible connector, PV wiring harness, energy storage cable assemblies and junction boxes for electromobility (EV), photovoltaics (PV) and energy storage.

2010

Factory Founded

16+

Years Manufacturing

3,000㎡

Standardized Plant

100,000

Pieces Daily Output

200+

Self-Developed Models

200+

Countries Served

Factory Profile

Production, quality and export capability

Production Scale

Founded in 2010, we are a national high-tech PV auxiliary parts manufacturer with 16 years experience. Our 3,000㎡ standardized factory houses full production & warehouse zones with 127–450 staff and 15+ R&D/QC specialists. 5+ automatic assembly lines deliver 100,000 pieces daily for connectors & junction boxes, as well as 1500V DC gPV solar fuse, TÜV UL solar inline fuse for PV system and utility scale PV array gPV fuse. As a professional fast delivery solar fuse factory, ample spot stock enables 24-hour delivery, with annual turnover USD 5M–10M to support large OEM/ODM orders.

Automated Production Equipment

We operate a full self-supporting production chain with auto injection molding, copper stamping, multi-station assembly and wire harness lines. In-house mold workshop enables fast customized mold development, automated processing ensures consistent product quality and high efficiency for connectors, junction boxes and all types of gPV solar fuses.

Strict QC System

Our independent test lab owns complete equipment for IP68 waterproof, high voltage, thermal cycle and aging tests. We follow 4-step inspection: raw material check, online patrol, 100% finished test and pre-shipment sampling. All products including 1500V DC gPV solar fuse and TÜV UL solar inline fuse for PV system pass ISO9001, TÜV, CE, RoHS and REACH certifications.

R&D Strength

15+ professional engineers continuously launch new PV & energy storage products, including utility scale PV array gPV fuse, with multiple structural patents. We supply one-stop PV accessories and provide quick non-standard customization for special BIPV and energy storage projects.

Global Export Experience

40% of our products are exported worldwide. With 16 years overseas supply experience, we master global certification rules and all trade terms. We attend international solar exhibitions and serve global EPCs, distributors and inverter manufacturers with complete export documents for connectors, junction boxes and full ranges of solar fuses.

Global Market Coverage

Our goods sell to over 200 countries across Europe, Americas, Middle East, Southeast Asia, Oceania and Africa. We maintain long-term partnerships with global PV installers, component factories and large EPC contractors, who source our fast delivery solar fuse factory products for rooftop, BIPV and utility-scale PV projects.

PV Project Service

Six advantages for solar engineering supply

1
One-stop supply of all PV auxiliary parts including 1500V DC gPV solar fuse, TÜV UL solar inline fuse for PV system and utility scale PV array gPV fuse to cut procurement costs
2
Free customized technical solutions for all solar & storage stations
3
Flexible mass production to guarantee on-time delivery for megawatt projects, backed by our strength as a reliable fast delivery solar fuse factory
4
5-year product warranty and 7×12h English online technical support
5
OEM/ODM private label, neutral packaging and customized harness services
6
Weather-resistant product series for desert, coastal and BIPV scenarios

Shanghai solar fuse manufacturer workshop

Design Capability

Full-stack independent design & R&D

YEPV SUPPLY CO., LTD (YePV) owns full-stack independent design & R&D capacity covering PV electrical connection components, protection devices and complete PV system solutions. We integrate electrical circuit design, mechanical structural optimization, waterproof & safety structure development, BIPV special customization and system matching design, supporting both standard product iteration and full ODM customized development for residential, commercial, industrial PV and EPC projects. All design outputs comply with global mainstream PV safety standards including TÜV, CE and IEC, to deliver safe, cost-effective and easy-to-install PV hardware solutions worldwide.

Electrical Design

Our electrical R&D team optimizes current transmission loss, high-voltage insulation and overcurrent protection structure. We conduct simulation verification for 1000V/1500V DC high-voltage scenarios, rapid emergency shutdown circuit logic and anti-arc structure design, effectively lowering fire hazards of PV systems under abnormal operation. All electrical designs pass TÜV third-party testing to meet IEC 62852 and global grid safety requirements.

Mechanical & Environmental Structure Design

IP68 sealed enclosure design for outdoor long-term exposure with anti-corrosion alloy matching for coastal, desert and high-temperature environments. Modular cost optimization such as multi-position shared waterproof enclosures (e.g. 4-switch shared housing) cuts overall system procurement cost. Professional MCB lockout structure keeps circuit breakers locked at OFF during maintenance. High-tension aluminum alloy and UL94-V0 flame-retardant plastic balance durability, weight and installation convenience.

BIPV & Special Scenario Custom Design

We provide targeted structural design for building integrated photovoltaic projects, adapting to thin-film module edge wiring, hidden wiring layout and building facade installation constraints. We also support customized wiring harness design for solar street light, hybrid solar lighting and off-grid micro-energy storage systems.

System-Level PV Solution Design

DC isolation & emergency shutdown scheme design for commercial and industrial PV plants; PV combiner box internal circuit layout with fuse and breaker matching; complete wiring harness matching for distributed rooftop stations; and safety protection system design covering earth fault, overcurrent and arc fault prevention — oriented to EPC contractors, asset owners and O&M teams.

Standard Compliance Design System

TÜV safety standard for high-voltage PV connectors, junction boxes and DC isolators; CE EU electromagnetic compatibility and safety requirements; IEC international PV component specifications; UL flame retardant & insulation standards for plastic and metal parts. Every new product completes full reliability verification before mass production, including high-low temperature cycle, water immersion, aging, tensile and short-circuit testing.

Design Value Output

Safety-first: embedded emergency isolation, anti-arc and lockout structure design to eliminate PV fire risks. Cost efficiency: modular shared structure and material optimization to lower overall system procurement cost. Installation-friendly: simplified plug-and-play structure and optimized wiring layout to shorten on-site construction hours.

Customized R&D & Iteration Mechanism

01Demand sorting: collect project voltage grade, installation environment, safety certification and cost target requirements
02Dual simulation design: electrical performance simulation + mechanical structural stress & waterproof simulation
03Rapid prototype development: fast mold adjustment and sample output for client verification
04Standard certification matching: optimize design structure to smoothly pass TÜV, CE, UL certification testing
05Batch iteration upgrade: continuously optimize product structure based on field O&M feedback to reduce installation time and post-operation failure rate

We hold multiple independent patents on connector structure, wiring harness layout and safety isolation switches, with over 200 self-developed PV component models launched so far.

Production & Quality Control

Ten-step process from raw material to shipment

Raw Material Screening (IQC)

All incoming copper terminals, flame-retardant plastic, PV cables and accessories are sampled and tested. Unqualified raw materials are rejected before entering production to eliminate hidden risks at source.

Precision Machining

Automatic stamping, injection molding and multi-station assembly lines process parts with micron-level precision. In-line inspectors check dimensions and appearance continuously to avoid defective semi-finished goods.

Withstand Voltage Test

Every finished unit passes 1500VDC high voltage insulation test to prevent electric leakage and short circuit in PV systems.

Flame Retardancy Test

Plastic housing samples undergo UL94 flame retardant testing to meet fire safety standards for outdoor solar installations.

Power-On Conduction Test

100% full electrical test for circuit connectivity, stable contact resistance and normal power transmission performance.

Accelerated Aging Test

Products run cyclic high-low temperature and UV aging tests to simulate long-term outdoor harsh working conditions and verify service life.

Finished Product Sampling Inspection (OQC)

Random batch sampling covers waterproof grade, mechanical lock structure and plug durability; only qualified batches move to packaging.

Dust-Free Sealed Packaging

Products are cleaned and packed in dust-free workshop with anti-static neutral export cartons to avoid scratch and contamination during transit.

Pre-Shipment Export Inspection

QC team rechecks quantity, labeling, packing integrity and attaches full TÜV/CE test reports for overseas customs clearance.

Customs Declaration & Shipment

Complete export documents including invoice, packing list and certificates are issued, followed by customs clearance and global delivery via sea/air freight.

Export Service Flow

From first inquiry to after-sales support

Overseas Client Inquiry

Receive consultation about PV accessories via emails, B2B platforms and exhibitions.

Technical Parameter Matching

Engineers recommend matching products based on clients' solar project voltage, current and application scenarios.

Quotation & Solution Offering

Provide customized technical solutions with formal price list, trade terms and delivery schedule.

Sample Confirmation

Arrange test samples for clients' lab testing; confirm sample quality before bulk order.

Mass Production

Arrange automated production after deposit receipt; track production progress regularly.

Full Inspection & Delivery

Complete 100% finished product testing, packing and pre-shipment inspection.

Cross-Border Logistics

Arrange sea/air shipment, offer FOB/CIF/CFR terms and full export customs documents.

After-Sales Technical Support

Provide long-term online English technical guidance, warranty service and spare parts support.

Wall of framed YEPV certificates and industry awards

Qualifications

Full compliance documentation for overseas tenders

Import & export licence, ISO quality system, TÜV photovoltaic product certification, UL and CE certificates, withstand-voltage and temperature test reports, flame-retardant protection certificates and a complete English compliance file set.

TÜV SÜD certified PV connectors with fuse holder up to 1500V DC
EN 62852 / IEC 62852 conformity for PV4 connector families
ISO9001, RoHS and REACH compliant material system
Complete test reports supplied for EPC tender submissions

View all certificates

Need a matched PV protection solution for your project?

Send your module power, system voltage and rated current — our engineers reply with matching models, full parameters and a factory-direct quotation.

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