Brand & Series Positioning: Belonging to the BSUMWELL brand, the PS-KG series is a line of waterproof plastic junction boxes focused on "outdoor weather resistance, high protection, and multi-specification adaptability". It covers electrical protection needs from small to large sizes, addressing core issues of waterproofing, dustproofing, and resistance to harsh environments for indoor and outdoor wiring. It is a mainstream choice for industrial and outdoor electrical scenarios.
Model Naming & Customization Services:
There is a clear rule for model suffixes: "G" stands for gray cover, and "T" stands for transparent cover, enabling quick distinction of appearance options. Mainstream models include PS-KG 15010070 (150×100×70mm) and PS-KG 390290160 (390×290×160mm), where the numbers in the model correspond to dimensions (length×width×height, in mm).
OEM customization is supported: customization of hole positions, sizes, colors, and logos is available (requiring .ai/.eps vector files). The minimum order quantity (MOQ) for customized orders is 100 units, the MOQ for bulk purchases is 10 units, and only 1 unit is needed for sample procurement (for quality verification).
Pricing & Supply Features: The unit price ranges from $0.9 to $16.91, increasing with the size of the product. Tiered pricing is supported (the larger the purchase volume, the more favorable the unit price). The manufacturer has a weekly supply capacity of 10,000 units, maintains regular inventory, and offers flexible delivery times (3 days for 1-100 units, and negotiable production scheduling for over 1,000 units).
Small-sized models: Typical dimensions are 150×100×70mm and 150×150×90mm, with a unit price of $0.9-$3.80. They focus on "portability and cost-effectiveness" and are suitable for wiring protection of small outdoor devices (such as surveillance cameras and small outdoor lights).
Medium-sized models: Dimensions include 200×100×70mm and 220×170×110mm, with a unit price of $1.5-$5.21. They are suitable for medium-sized electrical components (such as power distribution nodes for small industrial equipment and outdoor lighting control modules), balancing capacity and installation flexibility.
Large-sized models: Dimensions include 330×330×130mm and 390×290×160mm, with a unit price of $9.2-$16.91. They focus on "large capacity and strong protection" and are used for large industrial equipment (such as electrical cabinets for production lines and outdoor factory distribution boxes) or high-capacity wiring scenarios.
Material & Protection: Adaptable to Harsh Environments
The entire series uses new ABS or PC materials, with four core characteristics: impact resistance (able to withstand minor outdoor collisions), temperature resistance (-20℃ to +80℃, suitable for extreme temperature zones), chemical resistance (tolerating corrosive gases/liquids in petrochemical scenarios), and high insulation (ensuring circuit safety and avoiding short-circuit risks). Some models use flame-retardant materials (complying with UL certification) to further enhance safety.
The protection level reaches IP65/IP67: IP65 can completely block dust and splashing water, while IP67 can withstand submersion in 1m deep water for 30 minutes without water ingress, fully meeting the needs of complex outdoor environments such as heavy rain, dust, and humidity.
Structural Design: Convenient Installation & Maintenance
Opening methods: Mainly adopt "snap-type" and "hinge-type (flip cover)" designs, allowing quick opening/closing without tools, which improves the efficiency of later wiring maintenance. Some large-sized models have a flip cover design, suitable for scenarios requiring frequent inspections and repairs.
Installation adaptability: Wall mounting is supported (marked "Wall Mounted" for some models), with reserved installation holes at the bottom. The interior is equipped with ≥2 M4 copper nuts and fixing structures for circuit boards/DIN rails, enabling direct fixing of components without additional accessories.
Compliance & Cost: Balancing Safety & Economy
Complete certifications: The entire series has CE and ROHS certifications, complying with international electrical safety standards and suitable for installation regulations in most regions around the world (Europe, North America, Asia, etc.).
Cost advantage: The unit price of small-sized models is as low as $0.9, suitable for bulk purchases. Although large-sized models have higher prices, they are lighter than metal junction boxes (reducing transportation/installation costs) and free from rust risks, offering higher cost-effectiveness for long-term use.
Outdoor Basic Electrical Scenarios: Wiring protection for outdoor lighting, circuit protection for surveillance cameras, and household photovoltaic junction boxes. Relying on IP65/IP67 protection to resist rainwater and dust intrusion, it ensures stable operation of equipment.
Industrial Production Scenarios: Wiring protection for electrical nodes in factory production lines, wiring protection for petrochemical/steel smelting equipment, and temporary power supply junction boxes in mining areas. Through the chemical resistance and impact resistance of ABS/PC materials, it adapts to harsh industrial environments (high temperature, corrosive gases, collision risks).
Public Facility Scenarios: Circuit protection for railway signal equipment, outdoor distribution boxes at airports/ports, and electrical protection for sewage treatment facilities. It meets the needs of long-term outdoor exposure and adapts to public environments with large day-night temperature differences, humidity, and dust.
Q1. Does it matter if you use a plastic or metal electrical box, especially for outdoor or industrial scenarios?
Resistance to corrosion, UV rays, and chemicals (ideal for petrochemical, mining, or coastal scenarios);
Lightweight design (reduces transportation and wall-mounting load, no need for heavy-duty brackets);
IP65/IP67 waterproof/dustproof performance (outperforming many metal boxes that require extra gaskets for similar protection);
Cost-effectiveness (30%-50% lower unit price than metal boxes for the same protection level).
Q2. How to waterproof outdoor electrical connections using the PS-KG series junction box?
Enclose all connections: Place splices, terminals, or small components entirely inside the box—avoid leaving any wires exposed (the series’ multi-size options, from 150×100×70mm to 390×290×160mm, fit most outdoor connection setups).
Seal tightly: Ensure the polyurethane gasket (pre-installed in all PS-KG models) is properly seated, then close the lid using the snap-on or hinge-type design—tighten nylon screws (for large models) to eliminate gaps (this maintains IP67 protection, allowing temporary submersion in 1m water).
Optimize installation: Mount the box in a non-low-lying area (to avoid standing water) and use the series’ customized hole-drilling service (MOQ 100 units) to match waterproof cable glands—this prevents water from seeping through wire entry points.
Choose the right hole: Use the box’s pre-reserved holes (or customize hole positions/sizes via the OEM service) that match the small wire’s diameter (common 5-10mm holes for most small wires).
Remove the dust plug: Take out the PVC dust plug from the selected hole (all PS-KG models include plugs to maintain IP rating before use).
Thread and seal: Pass the small wire through the hole (strip ends first if connecting to terminals inside), then reinsert the dust plug around the wire—press tightly to fill gaps. For extra protection, apply a small amount of waterproof tape around the plug-wire junction (compatible with the box’s ABS/PC material).
Fix the wire: Use the box’s internal M4 copper nuts (pre-installed in all models) to secure the wire or terminal block—prevents wire displacement from wind or vibration.
Q4. Can a plastic junction box (like the PS-KG series) be reliable for long-term outdoor use?
Material durability: ABS/PC materials resist aging from UV rays (no brittleness or cracking after 2,000+ hours of sunlight exposure) and tolerate extreme temperatures (-20℃ to +80℃, adapting to winter frost and summer heat).
Structural stability: Snap-on/hinge lids retain tightness after 500+ opening/closing cycles; nylon screws (for large models) won’t rust or strip, ensuring repeated maintenance without seal failure.
Certified safety: CE and ROHS certifications confirm compliance with international electrical safety standards—no toxic material leaching or insulation breakdown in humid environments.
After-sales support: The 2-year limited warranty covers issues like gasket wear or material defects—manufacturer provides free replacement parts for qualified claims, further ensuring long-term reliability.


