M15 Series Wire Soldering Aviation Connector | Plastic & Metal Housing Optional Industrial Circular Plug

Our M15 series wire soldering industrial connectors adopt standard M15 metric thread locking structure, with standardized dimensional specifications and universal pin definitions, ensuring high compatibility and interchangeability with global mainstream M15 supporting equipment and accessories. The product supports multiple pin configurations including 2Pin, 3Pin, 4Pin and 5Pin, covering low-voltage signal transmission and medium-high current power supply connection requirements of industrial equipment. Both plastic and metal housing versions share consistent core electrical parameters and terminal structures, only differing in mechanical strength, protection grade and anti-interference performance. All products have passed RoHS international certifications, fully complying with global industrial safety and environmental protection standards.

1.1 Structural and Material Parameters

This M15 connector adopts a pure wire soldering field termination structure, eliminating complicated crimping and board-mounting design. The thickened and widened soldering terminals provide sufficient welding area, effectively avoiding virtual soldering, desoldering and poor contact during manual assembly, and ensuring firm and stable wire connection for long-term operation. The standard M15 thread self-locking structure realizes accurate meshing and reliable anti-loosening effect, resisting loosening and disconnection caused by long-term mechanical vibration and equipment operation. The connector is compatible with 14AWG to 22AWG stranded copper wires, suitable for medium-current power wires and industrial signal wires, with a recommended wire stripping length of 6mm to 9mm for optimal soldering quality.

The plastic housing is integrally injection-molded with high-strength modified PA66 flame-retardant engineering plastic, featuring seamless one-piece structure, high toughness, excellent insulation, anti-aging and anti-ultraviolet performance. It is lightweight and free of electromagnetic induction, with outstanding cost advantages for mass production of indoor equipment. The metal housing adopts precision CNC integral machining and nickel-plated anti-corrosion surface treatment, with ultra-high hardness, compression resistance, torsion resistance and structural stability. Equipped with high-elasticity imported silicone rubber sealing rings, both versions achieve stable sealing performance, resisting dust, water and humid air erosion in complex environments.

1.2 Electrical Performance Parameters

Rated current varies by pin configuration: 10A for 2/3Pin models, 8A for 4/5Pin models, supporting medium-high current load required by industrial power equipment. The rated voltage reaches 300V AC/DC, far exceeding miniature connectors, meeting the power supply demand of most industrial automation equipment. The product features a high dielectric withstand voltage of 2500V AC (50Hz, 1 minute), with no breakdown or flashover under instantaneous voltage surge, providing reliable overvoltage protection for industrial circuits. The insulation resistance is ≥2000MΩ at normal temperature and humidity, effectively isolating current leakage and avoiding short circuit faults caused by high temperature, humidity and insulation aging.

The contact resistance is strictly controlled below 3mΩ, realizing ultra-low-loss stable transmission of power and signal data without attenuation, delay or distortion. Conductive pins are made of high-purity oxygen-free copper alloy with thick gold-plated surface treatment, possessing excellent conductivity, oxidation resistance and corrosion resistance. The mechanical and electrical plugging lifespan exceeds 2500 cycles, maintaining consistent and stable electrical performance after long-term continuous power-on operation and repeated plugging.

1.3 Mechanical Performance Parameters

The reinforced M15 thread structure features a locking torque of 0.8N·m to 1.2N·m, ensuring firm locking and reliable anti-loosening effects during high-frequency vibration and mechanical impact. The plugging force is uniform and moderate, facilitating quick manual assembly and daily equipment maintenance without pin bending, terminal deformation or shell damage. The product can withstand continuous high-frequency vibration of 10Hz to 2000Hz and instantaneous mechanical impact, fully adapting to long-term vibrating operation of engineering machinery, automated production lines and mobile industrial equipment.

1.4 Environmental Performance Parameters

The operating temperature range is from -40℃ to +85℃, and the storage temperature range is from -50℃ to +110℃. The product maintains stable structural and electrical performance under extreme low-temperature freezing, high-temperature baking and frequent cold-hot alternation, with no deformation, cracking or performance degradation. It can operate continuously in 95%RH non-condensing high humidity environments, delivering outstanding moisture-proof, mildew-proof and chemical corrosion resistance.

The plastic housing version achieves IP44 dustproof and splash-proof protection grade, suitable for indoor closed environments, commercial equipment and protected industrial areas. The upgraded metal housing version reaches industrial IP67/IP68 full dustproof and waterproof grade, completely isolating dust intrusion and resisting long-term water immersion, rain erosion and fog corrosion, perfectly adapting to outdoor open-air environments, dusty workshops and humid field working conditions.

1.5 Soldering Process Parameters

The recommended soldering temperature ranges from 240℃ to 250℃, with single-point soldering time controlled within 2 to 5 seconds to avoid high-temperature deformation and damage to the insulating housing. The product is fully compatible with lead-free environmentally friendly solder, complying with RoHS environmental protection regulations. Optimized terminal spacing and high-temperature resistant structural design effectively prevent tin bridging and short circuit during manual soldering, ensuring high assembly yield and stable wiring quality for on-site construction.

Our M15 series wire soldering connector with optional plastic and metal housing integrates high-current load performance, flexible field assembly and strong environmental adaptability, solving the shortcomings of small current capacity, single application scenario and poor harsh environment resistance of traditional miniature connectors. The dual-material optional design allows customers to freely match products according to actual working conditions, realizing cost optimization for conventional indoor scenarios and high-reliability guarantee for harsh industrial and outdoor environments, with comprehensive market competitiveness far exceeding ordinary industrial connectors.

2.1 Flexible Wire Soldering Assembly, Ultra-Low On-Site Operation Threshold

Different from crimping connectors requiring professional hydraulic tools and molds and board-mounted connectors requiring fixed equipment positioning, this M15 solder-type connector supports pure manual on-site wiring. Operators only need a conventional electric soldering iron to complete wire welding and assembly, without additional professional equipment investment. The simple and efficient assembly process greatly shortens construction cycle, reduces labor costs and technical thresholds, and is extremely suitable for on-site engineering wiring, large mechanical equipment debugging, after-sales maintenance, project renovation and non-standard customized production.

2.2 Dual Housing Optional, Customized Balance of Cost and Industrial Performance

The plastic housing version focuses on ultra-high cost performance and safety. With full insulation, lightweight structure and IP44 protection performance, it eliminates electromagnetic induction and leakage risks, making it the optimal choice for indoor industrial control equipment, commercial electronic devices and general power signal systems. It effectively reduces batch production costs while ensuring stable basic connection performance. The metal housing version focuses on industrial high reliability, equipped with 360° all-round electromagnetic shielding function, which can effectively isolate external industrial electromagnetic clutter, avoid signal jitter and data distortion, and ensure ultra-precise signal transmission and stable power supply in strong interference industrial environments. Its IP67/IP68 waterproof and dustproof performance and high mechanical strength fully meet the harsh working requirements of outdoor engineering, mechanical equipment and heavy-industry workshops.

2.3 High Current Load & Ultra-Stable Transmission Performance

Benefiting from enlarged contact area and optimized circuit structure design, the M15 series features stronger current-carrying capacity and voltage resistance than M12 and M8 miniature connectors, which can meet medium-high current power supply and high-precision signal transmission requirements of industrial mechanical equipment. The gold-plated contacts maintain long-term oxidation resistance and corrosion resistance, avoiding poor contact caused by dust accumulation, humid erosion and long-term aging. The standard thread self-locking structure ensures tight fitting between plug and socket, effectively preventing connection loosening and signal or power interruption caused by equipment vibration and movement, realizing long-term error-free stable operation of industrial circuits.

2.4 Industrial-Grade Durability & Full Environmental Adaptability

All raw materials are halogen-free, flame-retardant and environmentally friendly, complying with international RoHS safety standards. The product has ultra-wide temperature resistance, waterproof, dustproof, anti-vibration and anti-aging comprehensive performance, and can operate stably in various complex and changeable industrial environments. The reinforced structural design greatly reduces equipment failure rate and later maintenance frequency, effectively extending the service life of terminal mechanical and intelligent equipment and saving long-term operating costs for customers.

With flexible wire soldering assembly, dual-material optional design, high current load capacity and excellent environmental resistance, the M15 series wire soldering connectors are widely applied in mechanical engineering automation, industrial power equipment, outdoor environmental monitoring, new energy auxiliary systems, large-scale intelligent instruments and building power control engineering industries.

3.1 Mechanical & Industrial Automation Equipment

It is extensively used for power and signal connection of large industrial machinery, automated production line equipment, transmission devices and mechanical control modules. The flexible soldering wiring design facilitates on-site equipment debugging, line replacement and daily maintenance. The metal shielding version effectively resists strong electromagnetic interference and mechanical vibration in industrial workshops, ensuring stable and accurate operation of automated mechanical systems.

3.2 Outdoor Engineering & Environmental Monitoring Systems

The IP67/IP68 waterproof metal housing version is suitable for outdoor monitoring equipment, field engineering wiring, meteorological monitoring terminals and outdoor power supply modules. It can resist wind, rain, dust and ultraviolet erosion, realizing long-term stable all-weather outdoor operation.

3.3 New Energy & Industrial Power Equipment

Applied to new energy power generation equipment, energy storage system auxiliary circuits and industrial low-voltage power distribution equipment. The high current load performance meets the power supply demand of medium-power industrial equipment, and the excellent temperature alternation resistance adapts to complex new energy equipment operating environments.

3.4 Large Precision Instruments & Testing Equipment

Widely matched with large industrial testing instruments and precision detection equipment. The metal full-shielding structure eliminates external electromagnetic signal interference, ensuring high precision and stability of detection data and experimental results.

3.5 Indoor Industrial & Commercial Intelligent Devices

The cost-effective plastic housing version is widely used in indoor industrial control cabinets, building automation power modules and commercial large-scale intelligent equipment, providing stable, safe and low-cost power and signal connection solutions for indoor industrial terminals.

Q1: What are the core advantages of M15 connectors compared with M12 series?

The M15 series features larger structural size, thicker conductive terminals and higher current and voltage load capacity, supporting medium-high current power supply scenarios that M12 miniature connectors cannot bear. It is more suitable for large mechanical equipment and industrial power connection, while retaining flexible wire soldering assembly and dual housing optional advantages.

Q2: How to choose between plastic housing and metal housing M15 connectors?

Plastic housing is lightweight, fully insulated and low-cost with IP44 protection grade, perfect for indoor static industrial environments and commercial equipment without electromagnetic interference. Metal housing features IP67/IP68 high-level waterproof and dustproof performance and 360° electromagnetic shielding function, ideal for outdoor environments, dusty and humid workshops, vibrating mechanical equipment and strong interference industrial occasions.

Q3: What wire specifications are compatible with M15 wire soldering connectors?

This M15 connector supports 14AWG to 22AWG standard stranded copper wires, compatible with most industrial medium-current power wires and signal wires, with strong universality and wide application range.

Q4: Is manual wire soldering operation difficult for ordinary workers?

The soldering operation is user-friendly and efficient. The terminal spacing is scientifically optimized to avoid tin bridging and short circuit. The shell adopts high-temperature resistant material without deformation during soldering. Ordinary operators can complete standard assembly quickly with a common electric soldering iron, with high yield rate and low error rate.

Q5: Do you support customized M15 connector specifications?

Yes. We provide comprehensive customized services, including special pin counts, non-standard structural size, exclusive surface treatment and customized environmental resistance parameters, to meet personalized equipment matching and project requirements.

Q6: What international certifications do your M15 connectors own?

All M15 wire soldering connectors have passed RoHS international authoritative certifications, fully complying with EU safety and environmental protection standards, supporting global export sales and international industrial matching applications.

Q7: What is your delivery cycle and after-sales guarantee policy?

Standard in-stock products can be delivered within 3–5 working days. Customized orders take 7–15 working days according to customization difficulty. We provide 12-month global quality warranty and 24-hour online professional technical support to solve product selection, installation and fault problems for customers in a timely manner.

We are a professional high-tech manufacturer focusing on the R&D, production and sales of full-series industrial circular connectors, including complete M5, M8, M10, M12 and M15 product lines. With mature automated production technology, strict multi-channel quality inspection system and rich industrial customization experience, we are committed to providing global customers with high-stability, high-precision and ultra-cost-effective industrial connection solutions.

Our M15 series wire soldering connectors with optional plastic and metal housing fill the market gap of high-current industrial connection products, solving the insufficient load capacity of miniature connectors in medium and large industrial equipment. Suitable for mechanical automation, new energy power equipment, outdoor engineering and industrial power distribution scenarios, our products have stable batch quality and high market recognition. We support free sample testing, bulk batch procurement and personalized customized development services, ensuring tailored connection solutions for different customer projects and equipment applications.

We sincerely welcome global buyers, engineering customers and business partners to consult product specifications, obtain official datasheets, inquire about wholesale quotations and put forward customized requirements. Our professional sales team and technical support team will provide one-stop full-process services including product selection guidance, technical solution design, on-site installation guidance and comprehensive after-sales support to establish long-term stable win-win cooperative relationships.