The waterproof connectors (also known as waterproof cables) produced by our company use high-quality copper core conductors and weather-resistant insulating materials, combined with precision sealed connector designs, to effectively prevent moisture and dust ingress, ensuring safe and stable electrical connections. Suitable for various cable connection scenarios requiring waterproof and moisture-proof performance. Product features: Efficient waterproofing: Achieves IP65/IP67 protection ratings, suitable for prolonged immersion or rain exposure. Strong weather resistance: UV-resistant, low-temperature resistant, corrosion-resistant, adaptable to harsh outdoor environments. Easy installation: Uses plug-in or threaded locking structures, allowing quick connection without professional tools. Safe and reliable: Flame-retardant materials, overload protection design, eliminating short circuit risks. Customizable: Supports different cable lengths, connector types, and colors to meet special requirements. Technical parameters: Rated voltage: 220V / 380V; Rated current: 10A / 16A / 32A (optional); Insulation resistance: ≥100MΩ; Waterproof rating: IP67 (IP68 optional); Operating temperature: -40°C ~ +105°C; Conductor material: Pure copper tinned. Application scenarios: Outdoor lighting projects (e.g., landscape lights, street lights, garden lights); LED display and advertising sign connections; Automotive electronic wiring harnesses (tail lights, fog lights, vehicle charging devices); Electrical equipment for ships, docks, and water parks; Industrial automation equipment, pumps, sensor connections.
Technical Specifications
| Terminal Type | Waterproof Connector |
| Wire Gauge | 18 AWG |
| Rated Voltage | 300V |
| Rated Current | 10A |
| Operating Temperature | -40°C ~ 105°C |
| Insulation Material | PVC |
| Waterproof Rating | IP67 |
Product Features
- Waterproof connector design, suitable for humid environments
- Supports custom processing to meet different length and terminal configuration requirements
- High-reliability connection, resistant to vibration and impact
- UL certified, meeting safety standards
Application Scenarios
- Home Appliances and Consumer Electronics
Custom power cords, signal cables, and ribbon cables, meeting ROHS/REACH environmental standards, suitable for white goods and small appliances. - Automotive Electronics and New Energy
Automotive wiring harnesses, sensor harnesses, high-voltage connection harnesses, certified under TS16949 quality system, high-temperature and vibration resistant. - Industrial Automation and Equipment
Robot harnesses, servo motor harnesses, drag chain cables, highly flexible and bend-resistant, adaptable to complex industrial environments. - Medical Device Harnesses
Medical-grade custom harnesses, biocompatible materials, precision terminal crimping, suitable for monitors, ultrasound equipment, etc.
Frequently Asked Questions
What is the difference between national standard (GB) and American standard (UL) wiring harnesses?
The main differences between GB/T 5023 and UL 758/AWM: ① Nominal cross-section – GB uses mm² (e.g., 0.5/0.75/1.0mm²), while US standard uses AWG (e.g., 22/20/18AWG);
② Testing methods – GB focuses on conductor resistance and insulation resistance, while US standard emphasizes mechanical properties (bending/tension/impact);
③ Certification labels – US standard harnesses require UL/AWM numbers printed, while GB harnesses require CCC certification numbers;
④ Customer base – UL certification is needed for export to the US/Canada, while CCC certification is required for domestic sales in China. Yingna Technology harnesses meet both GB and US standards, with traceable UL certification numbers.
What is the minimum order quantity for custom harnesses? How are sample fees calculated?
The minimum order quantity (MOQ) for standard harness products is 1000 meters per specification; for simple customizations (e.g., color, printing), the MOQ can be as low as 500 meters. First-time cooperation can arrange sampling: sample length 1~5 meters, sample fee 200~500 RMB (including UL certification labels), and the sample fee will be refunded upon batch order placement after sample approval. Batch order delivery time is typically 7~15 working days (depending on quantity and complexity). Rush orders can be inserted into production (rush fee approximately 15%), with delivery time compressed to 3~5 working days.
What is the conductor material of this harness? Bare copper or tinned copper?
This unit uses multi-strand tinned copper wire conductors, balancing conductivity and corrosion resistance. Bare copper conductivity is approximately 101% IACS, while tinned copper is about 98% IACS (difference only about 3%). Advantages of tinning: 3~5 times stronger oxidation resistance, better solderability (avoiding soldering issues), and significantly improved corrosion resistance. For high-reliability applications like new energy vehicles and outdoor equipment, tinned copper wire harnesses are recommended.
Will the wiring harness age after long-term use? How to extend its service life?
Under normal usage conditions, silicone rubber material has a service life of 10~15 years, while PVC material lasts 5~8 years. Factors affecting lifespan: ① Operating temperature – prolonged operation at the rated temperature limit accelerates aging (halving lifespan);
② Bending frequency – use high-flexibility harnesses for frequent bending applications (bending life ≥10 million cycles);
③ Environmental factors – UV, ozone, and chemical solvents accelerate aging of the silicone rubber outer layer. Tips to extend lifespan: maintain a 20% margin below operating temperature, avoid contact with chemical solvents, add protective sleeves for fixed wiring, and regularly check terminal crimping points for heating.
What is the difference between new energy vehicle harnesses and ordinary harnesses?
New energy vehicle (EV/HEV) harnesses must meet higher standards: ① Temperature rating – battery pack internal temperatures can reach 85~150°C, requiring silicone rubber harnesses (PVC cannot meet this);
② Voltage rating – high-voltage connection harnesses withstand 600V~1000V, far higher than ordinary 300V;
③ EMC shielding – high-voltage harnesses require braided shielding layers to prevent electromagnetic interference (EMC, compliant with CISPR 25 standard);
④ Flame retardancy – VW-1 + Low Smoke Zero Halogen (LSZH);
⑤ Vibration resistance – terminal crimping must not loosen under high-frequency vibration (vehicle operation);
⑥ TS16949 automotive quality management system certification. Ordinary harnesses do not meet these requirements and are prohibited for use in new energy vehicles.
What is the insulation material of this harness? Does it meet environmental requirements?
This unit uses silicone rubber or PVC insulation material, selected based on the model and specification. Silicone rubber withstands -60°C to 200°C, while PVC withstands -20°C to 105°C. The entire series of wires complies with RoHS 10-item testing and REACH SVHC screening, free of lead, mercury, cadmium, and other harmful substances, with third-party SGS test reports available. Electronic wires exported to North America must meet UL VW-1/FT2 flame retardancy ratings, while exports to Europe must meet the CE Low Voltage Directive.
How to judge the quality of a wiring harness?
3 methods to quickly assess harness quality: ① Visual inspection – insulation surface smooth, no burrs, bubbles, color deviation, or eccentricity;
② Bending test – after 100 repeated bends, insulation shows no cracks (silicone rubber) or significant whitening (PVC);
③ Burn test – quality harness self-extinguishes within ≤30 seconds after flame removal (UL VW-1/FT2 standard), while inferior harnesses continue burning with dripping. Additionally, measure insulation thickness (meeting UL standards) and conductor resistance (≤UL specified maximum). Before batch purchasing, it is recommended to request samples from the supplier for comprehensive quality verification.
What is the flame retardancy rating of the harness? Does it meet the UL VW-1 standard?
This unit's harness flame retardancy rating reaches UL VW-1 (vertical flame test), which is the minimum flame retardancy requirement of the UL 758 electronic wire standard. Higher flame retardancy options available: UL VW-1 + vertical flame, UL FT2 (horizontal flame), UL VW-1 + FT2 dual certification. Significance of flame retardancy standards: Harnesses passing VW-1, in a vertical flame test with 5 applications of 15-second burns, self-extinguish within 60 seconds, do not ignite cotton below, and have no burning drips. For applications with high fire safety requirements (e.g., inside new energy vehicle battery packs, medical equipment), harnesses with higher flame retardancy ratings are recommended.
What after-sales services can be provided after purchasing the wiring harness?
Winna Technology offers a standard 2-year warranty on wiring harness products. During the warranty period, non-human damage is repaired or replaced free of charge. Domestic customers enjoy a 48-hour response time and repairs completed within 7 working days; overseas customers can arrange repairs via DHL/FedEx. Products beyond the warranty period are eligible for paid repair services (cost approximately 30-50% of a new product). Lifetime technical support is provided, including wiring harness selection consultation, terminal processing solutions, and quality issue diagnosis. Annual framework agreement customers receive priority production scheduling, free samples, factory inspection support, and other value-added services.
How to waterproof wiring harnesses when used outdoors?
The insulation layer of this wiring harness is inherently water-resistant (silicone rubber/PVC do not absorb water), but for outdoor exposed use, it is recommended to enhance waterproofing with the following solutions: ① Use IP67/IP68 grade waterproof connectors;
② Install waterproof heat shrink tubing (with hot melt adhesive) at crimping points;
③ Apply PVC or PE protective sleeves over the cable for enhanced mechanical protection;
④ Use potting compound (epoxy resin or polyurethane) at connection points for permanent waterproofing. With these solutions, long-term underwater connections (up to 10 meters depth) can be achieved, suitable for scenarios like LED underwater lights, wastewater treatment equipment, and marine wiring harnesses.
What certifications does this wiring harness have? Can certification reports be provided?
This wiring harness is certified by UL (USA) and CE (EU), and complies with RoHS environmental and REACH regulations. The UL certification number is traceable, and CE declaration documents are complete. For bulk purchases, the following can be provided simultaneously: UL certification copy, Material Data Sheet (MDS), SGS environmental test report, and product flame retardant test report. For customers with special certification requirements (such as VDE, CCC, PSE, KC, etc.), please inform in advance, and separate certification applications can be arranged.
What is the minimum bending radius of the wiring harness? Can it be used for wiring in tight spaces?
The minimum bending radius of this wiring harness is 5 times the cable diameter, far less than the 10 times requirement for ordinary PVC cables. Due to the use of multi-strand ultra-fine tinned copper wire stranded structure, the harness has excellent flexibility and can be flexibly routed in tight spaces such as mobile phones, sensors, car door panels, and LED fixtures, with low risk of core breakage even under frequent bending. For applications requiring a smaller bending radius (such as robot drag chains), high-flexibility drag chain-specific wiring harnesses can be selected.
