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MC4 Connectors &
Solar Cables

Professional Manufacturer of Solar Panel MC4 Connectors and PV1-F Photovoltaic Cables in China. Over 20 years of experience in photovoltaic connection systems.

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About LNNTNN®

Cixi Longteng Electronics Co., Ltd. is a professional manufacturer that designs, produces, and sells photovoltaic MC4 connectors, photovoltaic cables, and photovoltaic junction boxes.

Founded in 2012, Longteng Electronics is a global technology enterprise specializing in the R&D, manufacturing, sales, and service of photovoltaic connectors and cables. Our business covers over 130 countries, serving millions of customers.

We adhere to the R&D concept of “practicality, efficiency, safety, and reliability” and are committed to improving green energy solutions through innovation.

20+
Years Experience
130+
Countries Served
1000+
Patented Products
MC4 Connector

Our Product Catalog

High-quality, certified MC4 connectors, solar cables, and accessories designed for reliability and efficiency in photovoltaic systems.

1500V MC4 Connector

1500V MC4 Connector

30A / 50A optional, TUV certified, IP67 rated, suitable for high-voltage solar systems.

  • 1500V Rating
  • 30A/50A Options
  • UV Resistant
Fuse MC4 Connector

Fuse Diode MC4 Connector

PV-LTMB01: 1000V, 10A-30A options with built-in fuse protection.

  • Built-in Fuse
  • Overcurrent Protection
  • TUV Certified
MC4 Dust Cover

MC4 Anti-Dust Cover

Gray/black options for PV-LTM5 and other MC4 connectors. Prevents contamination.

  • Weather Resistant
  • Easy Installation
  • UV Stable
Crimping Tool

Solar Crimping Tool

Professional tool for secure MC4 connector crimping. Compatible with 2.5-10mm² cables.

  • Ergonomic Design
  • Precision Crimping
  • Durable Steel
MC4 Wrench

MC4 Connector Wrench

Specialized wrench for PV-LTM2, PV-LTN4, and other MC4 connectors. Ensures secure connection.

  • Anti-Slip Grip
  • Corrosion Resistant
  • Compact Design
Mounting Panel MC4

Mounting Panel MC4

PV-LTM1: 1500V 30A/50A panel-mounted connector. Ideal for rooftop and commercial installations.

  • Panel Mount Design
  • High Current Rating
  • IP68 Waterproof
Y Type Branch Connector

Y Type Branch MC4

PV-LTY2: 1000V 30A Y-type 2-way parallel connector. Simplifies array wiring.

  • Parallel Connection
  • Low Resistance
  • TUV Certified
PV1-F Solar Cable

PV1-F Solar Cable

1500V TUV 2PfG 1169 certified. 2.5/4/6/10mm² sizes. Electron-beam cross-linked insulation.

  • UV & Ozone Resistant
  • -40°C to 120°C Range
  • Halogen Free
1000V MC4 Connector

1000V MC4 Connector

PV-LTM3: 30A/50A rated, IP67, UL and TUV certified. Standard for most solar installations.

  • Universal Compatibility
  • Easy Plug & Play
  • 25+ Year Lifespan
Extend Cable

Custom Extend Cable

PV-ET-1500V: Custom-length extension cables with MC4 connectors. Pre-wired and tested.

  • Custom Lengths
  • Pre-Crimped
  • 1500V Rated
Diode MC4 Connector

Diode MC4 Connector

PV-LTME01: 1000V 10A-30A with integrated bypass diode. Prevents hot spot damage.

  • Bypass Diode
  • Hot Spot Protection
  • TUV Certified
T Branch Connector

T Branch MC4 Connector

PV-LT2-B: 1500V 50A Type T connector. Enables 2-6 branch parallel connections.

  • Multi-Branch
  • High Current
  • IP67 Rated

Why Choose LNNTNN®?

Engineered for performance, safety, and longevity in solar energy systems.

Certified Quality

TUV, UL, CE certified products ensuring international standards compliance.

Weather Resistant

UV, ozone, cold, heat, and abrasion resistant materials for long-term outdoor use.

Low Resistance

High conductivity contacts ensure minimal power loss and maximum efficiency.

Complete Solutions

From connectors to cables and tools – everything you need for solar installations.

130+
Countries Served
20+
Years Experience
1000+
Patented Products
24/7
Customer Support

Frequently Asked Questions

What is the difference between 1000V and 1500V MC4 connectors?

1500V MC4 connectors are designed for higher voltage systems, reducing line losses and increasing efficiency in large-scale solar projects. They allow for longer string lengths and fewer combiner boxes, lowering overall system costs.

Are your MC4 connectors compatible with other brands?

Yes, our MC4 connectors comply with IEC 62852 standards and are fully compatible with other major brands like Staubli, Amphenol, and Huber+Suhner, ensuring reliable intermateability.

Do you offer custom manufacturing?

Yes, we support sample production and customized drawings. Contact us with your specifications for OEM/ODM services, custom cable lengths, and special connector configurations.

What certifications do your products have?

Our products are certified by TUV, UL, CE, and comply with 2PfG 1169 standards. We maintain strict quality control throughout production to ensure reliability and safety.

How do I install MC4 connectors properly?

Use proper crimping tools to attach connectors to cables, ensure full insertion until the locking mechanism clicks, and avoid bending cables immediately after connection. Always follow manufacturer guidelines.

Get in Touch

Have questions about our products or need a custom solution? Contact us today.

Contact Information

info@lnntnn.com
+86 150 8123 3980
288# Shengshan Tangxi Road, Shengxicun Shengshan Cixi, China
Mon-Fri: 8am-5pm | Sat: 9am-5pm

Quick Action

For inquiries, after-sales support, or product details, reach out directly through our official channels.

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