PV Grounding Clip / Grounding Lug for Solar Panels
Overview
Solar panel grounding clips and PV earthing lugs are connection accessories used in photovoltaic mounting systems to support conductive bonding between solar module frames, aluminum mounting rails, and metal support structures. Depending on the design, these components may use stainless steel, tin-plated conductive metals, or other suitable materials, with toothed contacts, spring-contact features, or bolt-fixed structures to establish mechanical connections and electrical contact. 9S Global Hardware Hub supplies solar grounding clips, grounding plates, and related photovoltaic mounting accessories for international wholesalers, solar installation suppliers, project purchasers, and equipment manufacturers. Product options can be discussed according to dimensions, material, surface finish, mounting-hole size, and rail compatibility. Drawing review, sample evaluation, and packaging requirements can also be coordinated. When selecting a grounding component, buyers should verify material compatibility, connection methods, installation torque, and applicable grounding design requirements. Electrical continuity, corrosion resistance, and system compatibility should be confirmed through the relevant product specifications and verification results rather than appearance alone. Final suitability for electrical safety applications must be assessed against the requirements of the complete photovoltaic installation.
Get a Quote for This Product →PV Grounding Clip / Grounding Lug for Solar Panels - Features
Piercing Contact
The toothed design penetrates the anodized layer and builds a low-resistance ground path quickly, with no need for extra sanding or surface preparation.
Fast Installation
No welding or special tools are needed. A standard wrench or screwdriver is enough, which cuts on-site installation time.
Multiple Materials
Available in stainless steel 304/316, tin-plated copper and tin-plated aluminum, to match different budgets and corrosion-protection levels.
Weather and Corrosion Resistant
Withstands high heat, humidity, salt mist and UV exposure, suitable for coastal, rooftop and long-term outdoor use.
Wide Compatibility
Fits mainstream aluminum frames, C-type and U-type rails and a range of grounding wire sizes.
Customizable
Tooth profile, dimensions, hole position, screw set and packaging can be made to your drawings or samples for project and brand needs.
PV Grounding Clip / Grounding Lug for Solar Panels - Specifications
| Product Type | PV grounding clip / grounding plate / grounding lug |
|---|---|
| Material | Stainless steel 304/316, tin-plated copper (T2), tin-plated aluminum |
| Thickness | 0.5–2.0 mm (customizable) |
| Wire Range | 4–16 mm² (approx. 12–6 AWG), customizable |
| Frame Compatibility | Common 30–40 mm PV aluminum frames |
| Fastener Set | M6/M8 bolt, nut and washer (lock washer optional) |
| Contact Type | Single-tooth / multi-tooth piercing |
| Surface Treatment | Passivation, tin plating, zinc plating (depending on material) |
| Operating Temperature | -40°C to +90°C (depending on material) |
| Packing | Bag / box / carton, private label available |
PV Grounding Clip / Grounding Lug for Solar Panels - Material & Grounding Performance
Available in stainless steel 304/316, tin-plated copper and tin-plated aluminum, balancing conductivity and corrosion resistance. The toothed design pierces the anodized frame layer to lower contact resistance. With suitable plating and anti-loosening fasteners, it keeps grounding stable over time, even in coastal, high-salt environments.
Material Selection
Stainless steel offers high strength and corrosion resistance for coastal, high-salt environments. Tin-plated copper gives the best conductivity for projects with strict contact-resistance requirements. Tin-plated aluminum is lighter and lower in cost.
Galvanic Compatibility
Contact between copper, aluminum and stainless steel can cause galvanic corrosion. We can recommend plating or isolation solutions based on the materials in your system.
Surface Treatment and Protection
Passivation, tin plating and zinc plating improve corrosion and weather resistance, selected according to the installation environment.
Tooth Design and Contact Resistance
Tooth count, height and shape affect piercing performance and contact resistance, and can be tuned to the anodized layer thickness of your frames.
Torque and Anti-Loosening
Lock washers and the recommended tightening torque keep the contact stable over the long term.
PV Grounding Clip / Grounding Lug for Solar Panels - Applications
Rooftop PV Systems
Provides equipotential bonding between module frames and rails on residential and commercial rooftops.
Ground-Mounted Solar Plants
Connects racking, modules and the grounding grid in utility-scale plants to improve system safety.
Fishery-Solar and Agrivoltaics
Handles humid, salty and changing environments to keep grounding connections reliable.
Racking and Rail Bonding
Used for jumper bonding between rails and between racking and the main ground conductor.
Energy Storage and Auxiliary Equipment
Suitable for grounding inverter stands, distribution cabinets and energy storage containers.
PV Grounding Clip / Grounding Lug for Solar Panels - Selection & Ordering
Selection by Frame and Rail
Send us the module frame thickness, rail type and mounting method, and we will match the size and tooth design.
Selection by Wire Size
Tell us the grounding wire cross-section or AWG so we can confirm hole size and the crimp or bolt connection method.
Material by Environment
Choose stainless steel for coastal or high-salt areas, tin-plated copper for high conductivity needs, and tin-plated aluminum for budget-sensitive projects.
Samples and Trial Orders
Samples and small trial orders are available so you can run installation tests before placing bulk orders.
Information for Quotation
Please provide model or drawing, material, quantity, packing requirements, destination port and any certification needs for a fast quotation.
PV Grounding Clip / Grounding Lug for Solar Panels - Quality & Delivery
Raw Material Control
Materials come from regular suppliers, and material certificates or test reports can be provided.
Outgoing Inspection
Dimensions, tooth profile, plating appearance and fittings are checked before shipment to keep batches consistent.
Third-Party Testing Support
We can send products to third-party labs such as SGS for tests like salt spray and material composition at the buyer’s request, with costs to be discussed.
Packaging and Protection
Moisture- and rust-resistant packing with reinforced cartons for sea freight and long transport.
Lead Time and Shipping
Stock and standard items ship quickly, and custom orders are scheduled by quantity. FOB, CIF and EXW terms and LCL consolidation are supported.
Suitable for Overseas Procurement
Supports sample orders, small-batch purchases, bulk orders, and OEM projects. Product packaging, labeling, cartoning, and export documentation can be arranged according to customer requirements.
PV Grounding Clip / Grounding Lug for Solar Panels - FAQ
What information do you need for a quotation?
Please provide the model or drawing, material, wire size, quantity, packing requirements, destination port and any certification needs, and we will reply with a quotation promptly.
How are the products packed and shipped?
They are packed in bags or boxes inside cartons with moisture and rust protection, suitable for sea and air freight, and LCL consolidation is available.
Do you offer OEM/ODM and private-label packaging?
Yes. We can produce to your drawings or samples, and offer customer logos, labels, neutral packing or custom packaging.
What is the MOQ?
The MOQ is low for standard items, while custom items depend on tooling and process. Samples and small trial orders are supported, so please contact us for specific quantities.
Do your products hold UL, CE or similar certifications?
Our products are made to customer drawings or standards, and we can provide material reports and support third-party testing such as SGS. If your project requires UL 2703, IEC or other certification, please tell us at the quotation stage so we can assess feasibility in advance.
Which module frames and rails are compatible?
It fits common 30–40 mm aluminum frames and C-type and U-type rails. Send a frame profile or sample and we will confirm the size and tooth design.
Should I choose stainless steel, tin-plated copper or tin-plated aluminum?
Stainless steel is best for coastal and high-salt areas, tin-plated copper for high conductivity needs, and tin-plated aluminum for budget-sensitive projects in ordinary environments. Galvanic corrosion against the frame and racking materials should also be considered.
What is the difference between a grounding clip and a grounding lug?
A grounding clip is usually mounted directly on the module frame or rail and bonds through its piercing teeth. A grounding plate or lug mainly connects the grounding wire to the racking. They are often used together, and we can recommend a combination for your system.