Ginlong-Style Plum-Blossom 2-Pin Male Solder-Wire Connector, Nickel-Plated with M22×1.0 Lock Nut & Waterproof O-Ring

This Ginlong-Style plum-blossom 2-pin male solder-wire waterproof connector is specially optimized for photovoltaic inverters, energy-storage power cabinets and distributed solar power systems. It is supplied complete with M22×1.0 lock nut and silicone waterproof O-ring, serving as the male mating plug for the matching plum-blossom female socket. It effectively solves common industry pain-points including unreliable panel fixation, poor environmental resistance, unstable contact performance and high harness processing cost for solar equipment manufacturers and harness factories.

First of all, M22×1.0 screw-lock panel mounting together with silicone O-ring realizes reliable IP67 cabinet-wall sealing. Many circular connectors on the market require customers to purchase lock nuts and sealing gaskets separately, which may lead to thread mismatch, gasket misalignment and loss of waterproof performance. This Ginlong-Style male connector is pre-equipped with original-factory M22×1.0 lock nut and matching silicone O-ring. During panel installation, feed the connector body through M22 mounting hole on cabinet wall, place the silicone O-ring between housing shoulder and outer panel surface, then tighten the M22×1.0 lock nut from inside of cabinet. The compressed O-ring fills panel clearance completely, blocking dust, rainwater and humid air from penetrating into cabinet interior. Compared with snap-in locking structures, threaded fastening delivers superior anti-vibration, anti-pull-out and anti-rotation performance. Even under long-time vibration generated by inverter fans and power devices, the connector will not rotate, loosen or fall off from cabinet panel. M22×1.0 thread follows mainstream dimensional standard of photovoltaic cabinet industry, realizing good interchangeability with compatible market connectors.

Second, nickel-plated male contacts provide outstanding mechanical hardness and environmental corrosion resistance. Male pins adopt high-quality copper alloy base with uniform nickel-plated surface. Nickel plating brings higher surface hardness than tin plating, reducing wear during repeated plug-in and pull-out cycles. It shows excellent anti-oxidation and anti-tarnish performance under humid, salt-fog and slightly corrosive atmospheric environment of outdoor photovoltaic sites. Stable low contact resistance avoids abnormal heating risk under 20A high-current working condition, fully meeting DC power transmission requirements of distributed photovoltaic inverters. Nickel-plated contacts maintain stable electrical performance for long-term outdoor operation, balancing service life and project procurement cost.

Third, solder-wire termination design improves harness-making flexibility and reduces production investment threshold. This male plug adopts solder-wire tail structure instead of crimp-type contacts. Harness workshops do not need to purchase expensive automatic crimping equipment and special crimping dies. R&D prototype verification, small-batch trial-production and mass-volume manufacturing can all be completed by ordinary soldering stations. Customers can select stranded copper wires within AWG18-12 range according to actual current load and internal wiring space, free from limitation of fixed crimp terminal specifications. It shortens new-product development cycle for photovoltaic equipment OEMs and lowers tooling investment cost for harness suppliers.

Fourth, plum-blossom circular layout plus anti-mis-mating polarization improves field construction safety. Unique plum-blossom 2-pin circular structure makes full use of circular panel cut-out space, compact and suitable for power-only transmission scenarios. Built-in polarization keying on housing defines only one correct mating angle. Site installers cannot complete insertion under reversed orientation, effectively preventing pin bending, short-circuit and equipment damage caused by human mis-operation. High-grade PA66 flame-retardant housing features excellent impact resistance and UV aging resistance. When installed on outdoor solar inverter cabinets, it resists cracking, embrittlement and fading under long-term sunlight irradiation and wide temperature swing. Internal insert firmly locks two male pins, avoiding contact shifting or loosening under mechanical shock. Compact outline saves precious panel layout space for inverter cabinets.

Fifth, rigorous full-process quality control ensures batch-to-batch consistency. Each production batch undergoes multi-level inspection before shipment: raw-material incoming inspection, nickel-plating thickness sampling test, thread dimension verification, O-ring compression sealing test and finished-product electrical performance spot-check. Anti-static packaging protects precision nickel-plated male pins from static discharge and surface contamination in logistics. Material statements and test documents can be supplied for project bidding and internal quality archive. This Ginlong-style connector keeps compatible mating dimensions with mainstream photovoltaic cabinet connectors on market, helping customers achieve cost optimization without sacrificing connection reliability.

Supported by 20A high-current carrying capacity, plum-blossom 2-pin power-focused layout, M22 panel-mount capability and IP67 environmental performance, this Ginlong-Style male solder-wire connector is widely applied for DC power interconnection of photovoltaic inverters, energy-storage cabinets and outdoor power distribution equipment.

3.1 Distributed Photovoltaic Inverter Systems Used as cabinet-panel male power interface for string inverters, micro-inverters and photovoltaic combiner cabinets. Two-pin design transmits DC power loop. M22 threaded panel mounting and silicone O-ring guarantee cabinet-wall sealing against outdoor rain and dust. Anti-vibration threaded locking adapts to continuous working vibration of inverter internal fans and power modules.

3.2 Energy-Storage Power Cabinets & Backup Power Equipment Suitable for household and commercial energy-storage cabinets, off-grid energy-storage power stations and backup power modules. Realizes external DC power harness connection. IP67 protection adapts to semi-outdoor cabinet deployment scenarios, stable high-current conduction meets energy-storage power loop requirements.

3.3 Outdoor PV Power Distribution Units Applied for outdoor photovoltaic junction boxes, field power distribution boxes for solar projects. Installed on cabinet outer panel, it connects internal power circuits with external field harness. Standard M22 mounting thread simplifies mechanical cabinet design for PV equipment manufacturers.

3.4 Industrial Outdoor Power Supply Equipment For outdoor industrial power supplies, field-deployed control cabinets and solar-powered monitoring power units. Working under large day-night temperature difference and rain-dust exposure, reliable sealing system prevents moisture ingress into cabinet interior. Nickel-plated contacts resist atmospheric corrosion in open-air sites.

3.5 Mobile Solar Emergency Power Station Adopted on portable solar generators and mobile field power supply devices. The connector withstands frequent handling, transportation vibration and splashing-water conditions. Firm screw-locking prevents accidental disconnection during field operation and moving process.

3.6 Photovoltaic Equipment Aging & Test Benches Widely used for inverter aging test racks and solar equipment debugging fixtures. Solder-wire termination facilitates quick prototype modification and custom test harness production. Stable high-current performance ensures repeatable test data during long-time aging operation.

Q1: What IP protection rating can this Ginlong-Style plum-blossom 2-pin male connector achieve?
A: It reaches IP67 rating under three prerequisites: connector assembled on M22 panel opening, silicone waterproof O-ring correctly seated, M22×1.0 lock nut fully tightened, and fully mated with matching female receptacle. IP67 provides dust-tight performance and protection against multi-direction low-pressure water splashing. This product is NOT intended for permanent underwater submersion. If IP68 deep-water application is required, please contact our technical team for customized solution.

Q2: Are M22×1.0 lock nut and silicone waterproof O-ring included in standard supply?
A: Yes. Both M22×1.0 threaded lock nut and silicone sealing O-ring are standard accessories together with male plug housing and contact insert. No separate purchasing of nut or gasket is needed for standard panel-mount assembly.

Q3: Is this solder-wire type or crimp-contact type? Can crimp terminals be assembled?
A: This is solder-wire termination male plug. Pin tails are designed for wire soldering. Standard version does not support crimp terminals. Users shall solder stranded copper wires onto pin tails by soldering iron. If crimp-contact variant is required for large-scale automatic harness production, please consult our sales team for alternative model.

Q4: What wire gauge is recommended for soldering? What is per-pin rated current?
A: Recommended stranded copper wire gauge: AWG 18-12. Continuous rated current for each single male pin is 20A. Do not exceed rated current in practical application to avoid abnormal heating and circuit risk.

Q5: Can I install the connector without O-ring or without fully tightening M22 lock nut?
A: Not permitted. Omitting waterproof O-ring will completely lose panel-side dust-proof and waterproof sealing. Insufficient tightening of M22×1.0 lock nut will cause connector rotation and loose fixation under vibration, resulting in sealing failure and poor contact. For outdoor and dusty industrial usage, O-ring must be correctly positioned and lock nut must be fully tightened.

Q6: Does this product contain the matching plum-blossom female receptacle?
A: This product only supplies Ginlong-Style plum-blossom 2-pin male solder-wire connector, M22×1.0 lock nut and waterproof O-ring. Corresponding female receptacle is sold separately. Please inform our sales if you need complete male-female mating sets.

Q7: Can you provide customization service?
A: Customization is available for large-volume orders. Supported custom items include nickel plating thickness adjustment, special housing color, minor housing structural modification. Customized projects have MOQ requirements. Please send your detailed technical requirements to our business email for evaluation and quotation.

Q8: Can I get engineering samples for pre-production performance verification?
A: Yes, test samples are available for customer performance and docking validation. Sample cost and freight shall be borne by customer. Sample lead-time depends on stock availability.

Q9: What is operating temperature range and mechanical mating-cycle life?
A: Standard operating temperature: -40℃ ~ +85℃. Minimum mechanical mating cycles: 500 times. For applications with extremely frequent plug-unplug operations, please contact us for enhanced-contact solution.

Q10: Are raw-material certificates and performance test reports available?
A: We can provide sampling electrical-performance test reports and raw-material compliance statements for project filing. Please submit your document request via our official contact channel.

If you have technical consultation, sample application, bulk-order quotation or customized-solution demand for Ginlong-Style Plum-Blossom 2-Pin Male Solder-Wire Connector with M22×1.0 Lock Nut & Waterproof O-Ring, please feel free to get in touch with our professional sales and technical-support team.

Our team owns rich practical experience in industrial circular waterproof connectors, photovoltaic & energy-storage interconnection components and wiring harness accessories. We are capable of providing technical-parameter confirmation, mating-model recommendation, project-oriented customization suggestions and full-order-progress tracking service for your specific application scenarios.

We sincerely welcome global distributors, harness manufacturers and equipment OEM / ODM manufacturers to establish long-term win-win cooperative partnerships with us.