How does the waterproof junction box for street lamps achieve efficient protection?

Street lamps, as the infrastructure for urban lighting, are exposed to outdoor environments for a long time and need to cope with multiple challenges such as rain, dust, and temperature differences. If the circuit connection part lacks reliable protection, it is prone to short circuits, poor contact, and other problems due to water ingress or oxidation. The adhesive integrated branch connector, as a key protective component of the street lamp circuit, provides a stable protection solution for outdoor electrical connections through physical sealing and material properties.

I. Technical Principle and Structural Design

This product adopts a silicone waterproof process. The core structure consists of a high-strength housing and internal silicone sealant. The housing is usually made of engineering plastics (such as PC or ABS), which have UV resistance and impact resistance, and can withstand physical damage in outdoor environments. The internal part is filled with two-component epoxy resin or silicone through an automated process, filling the gaps between the cables and the connection terminals, forming a seamless sealing layer. Its protection level reaches IP68 standard, meaning it completely prevents dust from entering and remains dry even after being submerged in 1.5 meters of water for 1 hour.

II. Application Scenarios and Functional Advantages

It is mainly used for the circuit branch connections of outdoor lighting equipment such as street lamps and landscape lights. Compared with traditional junction boxes, its advantages lie in three aspects: First, the waterproof performance is more durable, as the silicone sealant can resist rain erosion for a long time and avoid the risk of water ingress due to aging of the sealing ring; second, it has strong resistance to environmental interference, as the sealing structure can effectively block corrosive substances such as salt fog and acid rain, prolonging the equipment's service life; third, the installation convenience is improved, with a modular design that supports quick wiring, and the adhesive process is completed in the factory, only requiring the fixing of the housing on site, reducing construction time and human error.

III. Installation Method and Precautions

When installing, ensure that the cable stripping length complies with the specifications (usually 10-12mm), avoiding exposing the copper wire to affect the sealing effect. After wiring, check if the housing snap fasteners are locked to prevent loosening and water ingress. During regular maintenance, observe whether there are cracks or deformations on the housing to determine the sealing status, but do not open the internal part to check the silicone sealant (forcing it open will damage the sealing structure). Note that this product is only applicable to circuits with a rated voltage not exceeding 690V and a current not exceeding 63A. Using it beyond the specifications may cause safety hazards.

IV. Technical Parameters and Selection Basis on gaaye.com

The protection level IP68 is the core parameter, indicating its adaptability to extreme weather such as heavy rain and floods. The power parameters (such as 2W) usually refer to the power consumption of the internal indicator lights or auxiliary components and are independent of the main circuit load. When selecting, it is essential to confirm the cable cross-sectional area (such as supporting 35mm² main line and 16mm² branch line) and the number of branches (such as a 3-branch design), ensuring it matches the actual circuit. Additionally, the housing color (such as gray or black) can be selected based on the installation environment to reduce visual pollution or improve heat dissipation efficiency.

www.gaaye.com  Guangzhou Gaaye Electronics Co., Ltd