SanJun Hardware provides one-stop OEM & ODM full-process sheet metal customization service for photovoltaic AC distribution cabinet housings. Our complete manufacturing workflow includes laser blanking, CNC precise bending, heavy-duty reinforcement welding, custom cable gland holes, air duct heat dissipation processing, full-circle sealing groove forming, anti-UV powder coating and strict dimensional & sealing testing before shipment.

Core Competitive Edge: Free Custom CAD Drawing Design (No Drawings Required From Buyers)

PV AC distribution cabinets feature highly differentiated internal layouts, busbar installation space, wiring ports and protection grade requirements based on different solar inverter power and project environments. Countless global solar engineering clients delay project progress because they cannot get qualified cabinet structural drawings, and hiring third-party industrial designers brings high extra costs and long waiting cycles. Our senior mechanical & electrical structural engineers offer zero-cost drawing development service for every client: according to your inverter power, internal busbar layout, required IP waterproof rating, indoor/outdoor installation method, local climate and electrical component size, we independently complete standardized 2D engineering drawings and 3D assembly simulation models, supporting unlimited free revisions until fully matching your on-site assembly demands. This service drastically cuts your independent design expenditure and shortens the whole project development & sample delivery cycle.

Key Industry Difficulties We Fully Resolved

1. Cabinet sagging & permanent deformation caused by heavy copper busbars: Adopt thickened steel plate + built-in multi-layer reinforcing rib frame structure, greatly improve overall load-bearing rigidity, effectively avoid bending deformation under long-term heavy electrical component load.
2. Poor waterproof, dustproof and salt fog resistance for outdoor solar stations: Optimized integrated folded edge + full-circumference double EPDM sealing strip design, stably achieve IP54/IP65 protection rating; optional hot-dip galvanizing + double-layer weather-resistant anti-corrosion coating, adapt to coastal salt fog, high-temperature, rainy and dusty harsh outdoor photovoltaic plant environments.
3. Uneven assembly gaps, misplaced mounting holes & busbar interference: Strict precision machining control with ±0.1mm standard tolerance, ±0.05mm tight tolerance for high-end engineering orders, ensure perfect alignment of door panels, busbar mounting plates, cable holes and heat dissipation windows, convenient for fast automatic electrical assembly.
4. Insufficient heat dissipation leading to high internal temperature & circuit safety risks: Custom layered ventilation air duct and independent heat dissipation window layout according to inverter power and heat generation parameters, reduce internal temperature rise and avoid circuit aging failure of AC distribution systems.
5. Single fixed specification unable to meet diversified solar project demands: Fully customizable cabinet size, plate thickness, surface color, door lock type, cable gland position, grounding structure and rainproof top cover; small-batch trial orders and large-scale engineering bulk orders are both acceptable without rigid MOQ limits.

Raw Material & Manufacturing Standards

Multiple material options for different application scenarios: cold rolled steel, galvanized steel, SUS304 / SUS316 stainless steel. All semi-finished products go through deburring, rust removal and surface passivation treatment before coating; every finished enclosure passes dimensional inspection, water spray sealing test and static load test before delivery. Our factory holds ISO9001 quality management certification, all products meet international RoHS environmental compliance standards.

Wide Applicable Industry & Project Scenarios

Our custom PV solar AC distribution cabinet sheet metal shells are widely deployed in all mainstream global photovoltaic power generation sectors:

• Rooftop residential & commercial distributed solar PV systems
• Large ground-mounted utility-scale solar power plants
• Off-grid solar energy storage & hybrid PV power stations
• Industrial factory roof photovoltaic power generation projects
• Agricultural greenhouse solar power supply systems
• Remote mountain, island independent photovoltaic power stations
• RV, yacht mobile solar power equipment
• Communication base station solar backup power distribution systems