
Your Full-Scenario Weatherproof Electrical Enclosures
Solution Provider
Crafting Excellence: Custom Enclosure for Every Need
BSUMWELL: 19-Year Expert in Weatherproof Electrical Enclosures
With 19 years of experience in weatherproof electrical enclosure manufacturers, Bsumwell specializes in crafting weatherproof junction boxes across three core materials—plastic, stainless steel, and aluminum—tailored to address outdoor, industrial, household, and high-corrosion scenario needs. Our expertise lies in balancing material-specific advantages (e.g., plastic’s cost-effectiveness, stainless steel’s corrosion resistance, aluminum’s strength-to-weight ratio) with reliable weatherproof performance, ensuring consistent safety for diverse electrical systems.
We offer a full range of weatherproof junction boxes, covering multi-material options to meet targeted demands:
All our junction boxes feature industry-leading protection: IP65-IP68 ratings (from dust/splash resistance to long-term submersion), meeting IEC60439 standards and CE/ROHS certifications. Material-specific benefits include:
Plastic: Lightweight (50% lighter than metal), low cost, temperature tolerance (-20℃ to +80℃), ideal for general and household use.
Stainless Steel: 316L grade resists salt spray for 5000+ hours, perfect for harsh corrosive environments.
Aluminum: Balanced strength and weight, powder-coating ensures 10+ years of anti-rust performance.
User-centric designs are consistent across series: pre-reserved mounting holes, built-in DIN rails/M4 copper nuts (for component fixing), transparent/opaque lid options, and versatile installation (wall/pole/surface mounting).
We support full customization (hole drilling, size, color/logo, accessory matching) with a low MOQ and regular stock for fast delivery. Backed by a 2-year warranty (3 years for stainless steel) and 7×24 technical support, we deliver tailored, reliable electrical protection for households, commerce, and heavy industry.
Service features
At BSUMWELL, our service philosophy is simple: "Factory-direct reliability, customer-centric flexibility"—backed by 19 years of manufacturing expertise, we turn your needs into seamless solutions.

OEM/ODM Capabilities,Hassle-Free Sample Service
Customize every detail: From IP50-IP68 to material choices.
Free standard samples are available for some products.
Custom samples: Available with refundable fees (credited to your first bulk order).
Factory-Direct Supply: Cut Costs, Speed Delivery
No middlemen: Get factory pricing—save 10-20% vs. distributors.
Full production control: In-house mold workshops and testing labs ensure quality (e.g., 1,000-hour salt spray tests for stainless steel).
Flexible MOQs: Start with 10 units for small projects, scale to 10,000+ for bulk needs.
Comprehensive After-Sales Support
2-year warranty: Covers material defects (e.g., stainless steel corrosion, PC UV damage).
Technical guidance: 7×24 engineer support for installation (wall/pole mounting tips) or IP rating maintenance.
Reorder ease: Saved specs for repeat orders—skip re-approval, ship in 5 days.

Lockable Junction Box Electrical
The core advantages of this lockable junction box focus on "full-scenario protection + safety & convenience + customized adaptation": In terms of protection, it features an IP66 rating to resist dust, high-pressure water, and corrosion. Combined with a wide temperature range of -30℃ to +120℃ and UL94-V0 flame-retardant material, it is suitable for harsh environments; in terms of safety, it adopts dual protection of a tamper-proof lock and an external protection circuit to prevent unauthorized operations; installation and maintenance are convenient—pre-molded drill points and a detachable PCB board simplify construction, and the transparent model allows internal status inspection without opening the box; meanwhile, it supports OEM customization compliant with the IEC 60439-1 standard, enabling adjustments to dimensions and cutouts to fit different electrical components. Additionally, the grey model offers impact resistance and the transparent model provides UV resistance, further enhancing durability.
This product is widely used in key scenarios across multiple fields: In the energy sector, it serves as junction boxes for solar panels and power distribution enclosures for wind turbines, protecting photovoltaic and wind power components; in the security and IoT sectors, the transparent model is used as housings for CCTV cameras and protection boxes for IoT devices, balancing inspection convenience and protection; in industrial scenarios, the grey model is suitable for factory automation control cabinets and marine equipment enclosures, withstanding mechanical impact and corrosion; in public infrastructure, it is applied to telecom tower equipment protection and public power distribution boxes, and its tamper-proof design ensures public safety; in civilian scenarios, it meets the needs of outdoor charging protection for homes and outdoor socket locking, and small-sized models can also be adapted for indoor monitoring power control, realizing safe storage of electrical components across all scenarios.
Plastic Junction Box
All plastic junction box series under BSUMWELL are mainly made of new ABS, PVC, or ABS+PC (with high toughness, impact resistance, and high-temperature resistance), featuring protection grades ranging from IP65 to IP67, which can resist outdoor rain, dust, and industrial humid/corrosive environments.
Their structural designs focus on different priorities: the PS-WT series is centered on "ear-equipped" small to medium-sized boxes (with integrally molded ears on both sides for quick installation without additional brackets), targeting outdoor small devices (surveillance cameras, garden lights) and light-duty household needs; the PS-GT/PS-NT series are heavy-duty large-sized boxes (suitable for complex wiring and underground installation, with some models supporting short-term submersion in 1m deep water), focusing on heavy-duty industrial scenarios (factory power distribution, trailer circuits, landscape underground cables) — their large size and reinforced structure can withstand impacts and soil erosion; the PS-KG/PS-KT series are medium-sized universal models (with snap/hinge opening for easy installation), applicable to small to medium-sized universal scenarios (outdoor lighting, small equipment wiring) and balancing protection and cost. All series support customization of holes, colors/logos, and sizes, with a low procurement threshold and regular stock to ensure fast delivery.

Solar Pv Combiner Distribution Box
The Solar Pv Combiner Distribution Box Series is optimized for photovoltaic systems, including solar combiner boxes and distribution boxes, covering IP65-IP66 protection ratings and suitable for 600V-1000V DC environments. Made of ABS housing + PC cover or 304 stainless steel, it integrates national standard surge protectors, circuit breakers, and plug-in fuses, supporting 1-36 input/output circuits to meet the power combiner needs of residential and commercial solar arrays. Sizes range from compact to large industrial-grade based on circuit configurations, with a grounding design and support for customized assembly, suitable for rooftop and ground-mounted photovoltaic power stations.
Core Value: It integrates multi-layer protection: national standard 40kA surge protectors, 63A DC circuit breakers, and customizable 10×38mm pull-out fuses (default 15A) to prevent short circuits and overvoltage damage. Photovoltaic-specific circuit design (surge and overload protection), IP65-IP68 outdoor protection, efficient power combining to improve generation efficiency, compatibility with multiple specifications of photovoltaic modules, providing a safe and stable power distribution solution for solar energy systems.
Take Your Enclosure from Plain to Powerful
Our factory-direct sales model ensures competitive pricing, providing you with high-quality, customized solutions without breaking the bank:
7-Day Customization: Fit Your Exact Needs
Get IP50-IP68 rated enclosures in 7 days (vs. 15+ industry avg) for urgent needs.
Custom sizes (50×50×30mm to 1000×800×500mm), materials (316L stainless steel, UV-stable PC), and add-ons (DIN rails, CNC-cut entries).
Brand with laser etching or custom colors—no minimum order.
Sustainable by Design: Protect Systems & Planet
Our enclosures balance durability and eco-consciousness:
Use 70% recyclable, high-quality materials (GRS-certified PC, corrosion-resistant stainless steel) with 10+ year lifespans.
Plastic-free packaging and a recycling program for old enclosures—support green energy and smart city projects
Worry-Free Support: We Stand By You
Beyond delivery, we ensure success:
Free pre-sale help: Choose IP ratings/materials (e.g., FRP for chemicals, PC for sensors).
2-year warranty + 7×24 support for installation (wall/pole mount) or maintenance.
Bulk discounts and dedicated managers for repeat orders.



Custom Waterproof Enclosures
Startup Enablement - InnoTech Robotics, Singapore
For InnoTech Robotics, a startup with big dreams, finding a supplier for less than 1,000 units seemed like an impossible task—until they came to us. With our zero MOQ, 500 laser-etched housings, and no tooling fees, we made their launch a reality. They not only achieved 183% of their crowdfunding goal but also secured $80,000 in Seed funding. If you're a startup with innovative ideas, our waterproof enclosures are the gateway to turning your vision into a successful product.

Coastal Infrastructure Solution - UrbanBuild Engineering, Australia
Coastal environments can be brutal, as UrbanBuild Engineering discovered with their coastal sockets suffering 35% annual corrosion. But our 52,000 IP66 surge-protected sockets were up for the challenge. Having passed a grueling 1,000-hr salt spray test, these sockets have stood the test of time, with zero failures over 3 years. They've even withstood Category 4 cyclones, saving UrbanBuild $42,000 per year in maintenance costs. If you're building in harsh coastal conditions, our waterproof enclosures are the reliable shield your infrastructure needs.

FAQ
What waterproof ratings and materials do your enclosures offer?
We offer a full spectrum of ratings from IP30 (basic dust protection) to IP68 (1m submersion for 30 minutes). This covers everything from indoor use to extreme outdoor/underwater environments.
Our materials include stainless steel (304/316L) for high corrosion resistance in marine and heavy industrial use; aluminum that’s lightweight with EMI/RFI shielding for electronics; polycarbonate (PC) and ABS+PC which are impact-resistant, UV-stable, and signal-penetrable for outdoor wireless devices; and fiberglass reinforced plastic (FRP), a chemical-resistant, non-conductive option for harsh environments like agriculture or explosive zones. Whatever your project demands, we have the right combination of protection and material strength.
How can I ensure proper installation, and what maintenance does the enclosure require?
What kind of warranty and sustainability efforts can I expect from your products?
Do you offer enclosures suitable for hazardous environments, security systems, or extreme temperatures?
What customization options and delivery services do you offer?

CONTACT US
With three core advantages: protection performance, customization efficiency, and service assurance, we are the trusted partner for global industrial manufacturers, ensuring outdoor electrical systems perform reliably in harsh environments like heavy rain, dust, and salt mist.
vic@bsumwell.com, lucy@bsumwell.com, vivi@bsumwell.com
Address
A430, Gaosheng Building, 18 Center Road, Xinqiao Street, Baoan, Shenzhen







