Growatt Latch-Type Connector, 8P Male, PC3.2 Wire-Solder Type, 0.4μm Gold-Plated, with Waterproof Gasket

All structural, electrical, mechanical and environmental specifications have been verified through laboratory testing, and can be directly referenced for drawing creation, BOM listing, quality inspection and mass procurement. Key definition: PC3.2 = 3.2 mm reserved wire-soldering length, which provides sufficient working clearance for wiring layout and welding-assembly operations.

1.1 Physical and Structural Specifications

1.2 Electrical Specifications

• Rated Voltage: 250 V AC / DC
• Rated Continuous Current: 3 A
• Contact Resistance: ≤ 0.5 mΩ, low-impedance for stable signal and auxiliary-power transmission
• Insulation Resistance: ≥ 1000 MΩ, preventing leakage and short-circuit risks inside inverter cabinets
• Withstand Voltage: 1500 V AC for 1 minute, no breakdown or flash-over
• Application: Low-medium power transmission and general-purpose control-signal transmission for inverter auxiliary circuits

1.3 Mechanical and Environmental Specifications

• Mating Cycles: ≥ 1000 stable plug-unplug operations
• Operating Temperature Range: -40 ℃ ~ +85 ℃, adapted to internal temperature variation of PV inverters
• Sealing Performance: Improved dust-proof and moisture-proof performance when assembled with the matched waterproof gasket, suitable for humid cabinet-internal and semi-outdoor conditions
• Vibration Resistance: Maintains reliable connection under sustained vibration, avoids intermittent contact or open-circuit faults
• Anti-Corrosion Performance: 0.4 μm gold-plated contacts resist oxidation and salt-spray corrosion

This latch-type connector has been purpose-optimized for Growatt inverter series equipment. Every design detail addresses common pain-points of interconnects used inside new-energy equipment: contact oxidation, moisture ingress, poor anti-vibration performance and inconvenient PCB assembly.

2.1 Specially Developed for Growatt Inverter Series

This connector is purpose-built as a matching interconnect for Growatt inverter products. Mechanical dimensions, electrical parameters and latch locking force are tuned to match the internal cabinet layout, signal-board interface and thermal-cycle characteristics of Growatt inverters. It avoids compatibility risks caused by using generic third-party connectors, reduces abnormal signal errors and intermittent connection issues, and improves overall system stability of photovoltaic power-conversion equipment.

2.2 PC3.2 Reserved Soldering Wire Length Optimizes Assembly Workflow

The 3.2 mm reserved soldering wire length provides standardized wire margin for engineers and production technicians. Designers do not need to redesign wiring space for soldering terminals, while production staff obtain enough wire length for stripping and soldering without excessive trimming or insufficient wire segments. This standardized dimension raises prototype development efficiency and mass-production assembly yield, lowering assembly-induced failure risks for inverter manufacturing.

2.3 0.4 μm Gold-Plated Contacts for Anti-Oxidation and Stable Conductivity

Contact surfaces adopt 0.4 μm high-purity gold plating. Compared with tin-plated terminals widely used in low-cost connectors, gold plating maintains stable chemical properties under temperature cycling and humid air inside inverter cabinets. It keeps ultra-low contact resistance over years of operation, preventing signal drift, intermittent communication and local overheating caused by oxidized contact layers. Less connector-caused failure means lower after-sales maintenance cost for inverter OEMs and system integrators.

2.4 Matching Waterproof Gasket Blocks Moisture and Fine Dust

Supplied with a custom-fit waterproof gasket. After proper assembly, the gasket fills gaps between housing and wire entry, blocking water vapor, condensation moisture and fine dust from invading the contact zone. Condensation inside inverter cabinets is a common failure source for auxiliary connectors; this sealing design effectively mitigates short-circuit and metal-corrosion risks, expanding usable scope beyond fully dry indoor environments to damp cabinet-internal and semi-outdoor installation scenarios.

2.5 Robust Wire-Solder Termination with Strong Anti-Vibration Capability

Wire-solder termination fuses wire conductors and terminals into one integrated conductive unit. It delivers far superior tensile-resistance and anti-loosening performance compared to ordinary crimp-only connections, which are prone to loosening under long-term vibration and temperature cycling in inverter systems. The terminal geometry supports both manual soldering for small-batch verification and automated wave soldering for large-volume inverter mass production.

2.6 High-Grade Flame-Retardant Housing and Cost-Effective Performance

The injection-molded housing uses flame-retardant insulating engineering plastic with excellent dielectric strength, anti-aging property and mechanical rigidity. All finished units pass strict insulation, withstand-voltage, vibration and salt-spray testing. While delivering inverter-grade reliability, this solution provides competitive factory-direct pricing, helping customers optimize BOM cost without sacrificing connection safety and stability.

Tailored for Growatt inverter series and extended to other new-energy and industrial devices, this 8P male wire-solder connector covers auxiliary-power and control-signal connection in multiple fields:

• Growatt Photovoltaic Inverters: Internal auxiliary signal connection, communication peripheral wiring and low-power auxiliary circuit interconnection for Growatt on-grid, off-grid and hybrid energy-storage inverter series.
• Energy-Storage System Auxiliary Modules: Signal links for battery management unit accessories, BMS peripheral sensors and low-voltage auxiliary wiring inside energy-storage cabinets.
• Industrial Automation Equipment: Industrial sensors, low-power control terminals and detection instruments deployed in dusty or humid workshop environments.
• Semi-Outdoor Smart Electronic Devices: Outdoor monitoring units, garden smart lighting and roadside sensing equipment, where gasket-enhanced moisture-proof performance is required.
• Smart-Home Hardware: Intelligent sensors, smart locks and household monitoring devices requiring stable long-term signal transmission.
• General-Purpose Consumer Electronics: Portable measuring instruments and small intelligent hardware requiring reliable wire-solder assembly.
  

Q1: What does PC3.2 mean in this connector specification?
A1: PC3.2 refers to the 3.2 mm reserved wire-soldering length. This reserved wire segment allows customers to complete wire-soldering operations. This standardized reserved-length design improves the flexibility of wire-soldering layout and boosts assembly yield during inverter manufacturing.

Q2: Why is this connector stated to be specially developed for the Growatt inverter series?
A2: Mechanical dimensions, locking-latch force, electrical rating and environmental performance of this connector are tuned according to Growatt inverter cabinet structure and working conditions. It serves as a matching interconnect solution for Growatt inverter auxiliary circuits and reduces compatibility risks from generic third-party connectors. It can also be applied to other equipment with matching technical requirements.

Q3: What advantages does 0.4 μm gold plating bring versus tin-plated terminals?
A3: Gold-plated contacts deliver superior oxidation-resistance and wear-resistance. Inside inverter cabinets with temperature cycling and occasional condensation, gold plating keeps stable low contact resistance. Tin-plated terminals tend to build oxide layers over time, triggering bad contact, signal interruption and local heating. Gold-plated contacts lower long-term equipment failure rate.

Q4: Can this connector handle condensation and humid working conditions inside inverter cabinets?
A4: When assembled with the supporting waterproof gasket, it achieves good moisture-proof and dust-proof performance and copes with cabinet-internal condensation and humid air. Please note the gasket provides sealing at the wire-entry interface; for fully-exposed heavy-rain outdoor deployment, additional housing-level IP protection is still required.

Q5: Which soldering processes are supported for installation?
A5: It supports manual soldering-iron soldering and automated wave soldering. The PC3.2 reserved soldering-wire length provides sufficient operating margin for stripping and soldering. No special custom tooling is needed, suitable for prototype trial and large-volume inverter mass-production.

Q6: Do you provide sample support and customization services?
A6: Yes. We provide samples for performance verification, small trial orders and large-volume bulk supply. Customizable options include adjusted reserved soldering-wire length, modified plating thickness, custom packaging and pre-assembled wire harness solutions according to customer drawings and requirements.

We are a professional manufacturer specializing in R&D, production and supply of precision electronic connectors for new-energy, industrial automation and consumer-electronics industries. Our product portfolio covers latch-type connectors, waterproof wire-solder connectors, pin headers, socket connectors and custom-made interconnect accessories widely used in photovoltaic inverters, energy-storage systems, industrial control and smart-hardware sectors.

We implement strict full-process quality management covering raw-material incoming inspection, precision machining and finished-product performance testing. All products comply with relevant international industry standards. Our technical team can assist you with parameter interpretation, PC reserved soldering-wire-length confirmation, mating-part selection, inverter-application matching and technical-problem troubleshooting.

If you have demands for product consultation, sample application, bulk procurement or customized development, please get in touch with our sales-technical team. We aim to respond to all inquiries within 24 working hours, provide accurate product recommendations and competitive factory quotations. We sincerely look forward to establishing long-term win-win cooperation with global customers.