Sealed Plastic Enclosure Junction Boxes

Serving as a protective enclosure against water and dust, this housing is primarily designed to safeguard internal components—such as wiring, meters, and instruments—from water ingress that could compromise their performance.

Waterproof Ratings:
Typical waterproof ratings range from IP63 to IP68. Specific classifications are defined as follows:
IP63: Water or rain falling at an angle of up to 60 degrees relative to the enclosure causes no harmful effects;
IP64: Liquid splashed against the enclosure from any direction causes no harmful effects;
IP65: Direct washing with water causes no harmful effects;
IP66: Suitable for use within ship cabins or similar environments;
IP67: Capable of withstanding temporary immersion in water (up to 1 meter in depth);
IP68: Capable of withstanding prolonged immersion in water under specific pressure conditions (e.g., for deep-water cable connections).

Primary Applications:
Due to regional variations and differing functional requirements, waterproof enclosures are known by various names. In industrial settings, common types include waterproof junction boxes, waterproof instrument enclosures, and waterproof photovoltaic junction boxes. These enclosures are primarily utilized in indoor and outdoor environments across a wide range of sectors, including electrical systems, telecommunications, fire safety facilities, steel smelting, petrochemicals, electronics, power generation, railways, construction sites, mines, mining operations, airports, hotels, marine vessels, large-scale manufacturing plants, coastal industrial facilities, cargo terminals, wastewater treatment plants, and environmental pollution control facilities.

Core Advantages:
1. Lightweight and Economical; Effortless Installation.
2. High Protection Ratings (IP66/IP68) for Harsh Environments: Thanks to the use of silicone rubber sealing strips and precision-engineered locking mechanisms, plastic waterproof enclosures achieve protection ratings ranging from IP66 (protection against powerful water jets) up to IP68 (protection against prolonged water immersion). Whether subjected to torrential rain or temporary submersion, the internal components remain completely safe and secure. IP66-rated enclosures can withstand high-pressure water jets, making them suitable for outdoor equipment; IP68-rated enclosures are designed for scenarios involving prolonged submersion, such as underground installations or underwater applications.
3. Diverse Material Options to Suit Various Operating Conditions:
ABS: Offers excellent rigidity, high impact strength, and resistance to both high and low temperatures. It is easy to process, cost-effective, and suitable for indoor or general outdoor environments.
PC: Features strong UV resistance, superior weatherability, and high transparency, making it ideal for outdoor environments involving prolonged sun exposure or applications where internal components need to be visually monitored.
PC/ABS Alloy: Combines the robust mechanical properties of PC with the excellent moldability of ABS, offering a blend of temperature resistance, UV protection, and ease of processing.
4.Fully Insulated Materials for Enhanced Electrical Safety: These plastic waterproof enclosures are manufactured using engineering-grade plastics, which are inherently insulating and non-conductive. This eliminates the risk of electrical leakage, making them particularly well-suited for applications—such as power distribution and telecommunications—where strict insulation standards are required. In contrast, metal enclosures necessitate additional grounding measures to ensure safety.
5. Excellent Flame Retardancy: Most plastic waterproof enclosures utilize UL94 V0/V2 self-extinguishing materials; they self-extinguish upon removal from a flame, thereby meeting fire safety regulations.
6. Convenient Installation & Comprehensive Accessories:
- Multiple internal mounting bosses are provided to facilitate the secure attachment of components such as PCBs and terminal blocks.
- Pre-drilled mounting holes on the base allow for flexible installation—either wall-mounted or floor-standing.
- Side panels can be customized with cutouts according to client specifications to accommodate waterproof cable glands.
- Select models feature transparent covers, allowing for visual inspection of internal components without the need to open the enclosure.
7. Stable Operation Across a Wide Temperature Range: With an operating temperature range spanning from -40°C to +110°C, these enclosures are capable of withstanding diverse climatic conditions—from extreme cold environments to high-temperature deserts.

Manufacturing & Quality Control Capabilities
Core Materials: We utilize high-quality engineering plastics—such as ABS, PC, and PC/ABS—that comply with RoHS environmental standards; we strictly avoid the use of recycled secondary materials.
Molding Process: Precision injection molding is employed, utilizing high-precision tooling to ensure dimensional consistency and a perfect sealing fit.
Sealing Technology: We utilize silicone rubber gaskets or PUR/EPDM foam seals to ensure long-term sealing stability and reliability.
Quality Inspection: Every unit undergoes rigorous testing, including 100% IP waterproof testing, insulation withstand voltage testing, and seal integrity verification.
Certifications: CE, RoHS, ISO9001, CCC.
Customization Services: Dimensions, colors, cutout locations and quantities, logo silk-screening, and internal accessories can all be customized to meet specific requirements.

We have dedicated years to the R&D and manufacturing of plastic waterproof enclosures, and our products are ISO9001 certified. We offer a wide range of waterproof enclosures made from various materials—including ABS, PC, and PC/ABS—covering IP protection ratings from IP65 to IP68. We are committed to using only premium engineering plastic raw materials and conduct 100% IP waterproof testing on every unit. We support OEM/ODM customization services, provide complimentary product selection assistance, and maintain ample stock of standard specifications.