This American standard triple pole power expansion socket strictly follows the NEMA 5-15R interface standard and UL 62 electrical safety specifications in the United States. It has passed UL safety certification and is compatible with 125V/60Hz civilian and commercial power supply networks in North America, Canada, Mexico, and other regions. It is a one to three power extension adapter component that can independently power three electrical devices at the same time. With its multi interface expansion capability, complete grounding protection, and sturdy and durable structural design, it is widely used in home, office, temporary construction, exhibition and other scenarios. It is a highly practical power expansion plug and socket accessory in the North American market.

The product adopts a layout of three horizontally arranged NEMA 5-15R three pole sockets, with each socket following the American standard "one round, two flat" three pole specification. The upper circular hole is a dedicated grounding electrode, and the lower two parallel flat holes correspond to the live and neutral wires, respectively. All hole sizes, inter electrode spacing, and depth parameters strictly follow the North American unified standards, and are compatible with both NEMA 5-15P three pole grounding plugs and conventional American standard two pole plugs, covering the vast majority of North American standard household, office, and small industrial appliance plugs. Adequate spacing is reserved between the three sets of sockets, so even if three large volume power adapters are inserted at the same time, they will not block or squeeze each other, greatly improving the utilization rate of sockets and perfectly solving the pain points of insufficient capacity of traditional single sockets and large adapters blocking adjacent sockets. Each socket is equipped with independent high elasticity copper alloy conductive spring plates inside, with uniform and stable clamping force. After inserting the plug, it fits tightly and is not easy to loosen or fall off. After thousands of repeated insertions and removals, it can still maintain sufficient clamping elasticity, avoiding safety hazards such as false connection heating and contact ignition. The grounding circuit of the three sets of sockets is fully connected, providing a reliable leakage discharge channel for metal shell equipment such as computer hosts, refrigerators, and power tools. When the equipment has insulation damage or shell live faults, the grounding circuit can instantly introduce the fault current into the ground, effectively preventing the risk of electric shock to the human body and fully meeting the mandatory grounding safety requirements of Class I electrical appliances in North America.

The socket adopts an integrated injection molding process as a whole, and its shell is made of high-strength flame-retardant engineering plastic, reaching UL94 V0 flame-retardant standard. It has excellent impact resistance, high and low temperature resistance, and aging resistance. In case of external open fire, it can quickly self extinguish, completely isolate internal live parts, and physically eliminate electric shock and fire hazards. The dense anti slip texture design on the surface of the shell not only enhances the friction during grip and insertion, making it less likely to slip during operation, but also increases the heat dissipation area of the shell, which can assist in dissipating internal working heat and reduce the temperature rise level during long-term full load operation. The edge of the shell is designed with reinforced protruding structures, effectively improving the overall structural strength. It is less prone to cracking and deformation during daily collisions and mild trampling, and can adapt to complex and changing usage environments such as homes, construction sites, and exhibitions. The incoming end integrates a multi-channel stepped anti bending and wire protection structure, which evenly disperses the stress generated by the pulling and repeated bending of the wire through multiple layers of circular grooves, effectively alleviating the fatigue loss at the root of the wire and reducing the probability of internal copper wire fracture and outer sheath cracking; Internally equipped with a dedicated locking wire clamping device, the wire and internal conductive components are firmly connected using precision cold pressing technology, and the tensile strength fully meets UL industry standard requirements. It is not easy to cause problems such as loose wire cores and terminal detachment during daily dragging and moving use, ensuring long-term electrical connection stability.

The internal conductive components are made of high-purity copper alloy substrate precision machining, and the surface is uniformly nickel plated with anti-oxidation treatment. The conductivity is excellent, the contact resistance is low, and the temperature rise is stable under long-term rated load conditions. It is not easy to oxidize or ignite, and the service life is long-lasting. The supporting Power cord adopts multi stranded oxygen free copper stranded conductors, with sufficient current carrying capacity and low line loss. The outer layer is thickened with PVC insulation sheath, which is flexible, wear-resistant, bending resistant, and oil resistant, and can be adapted to various indoor use scenarios. The rated specification of the product is 15A 125V, which can support stable power supply for multiple small and medium power devices at the same time. Before leaving the factory, it has undergone a full set of safety tests such as withstand voltage testing, insulation resistance testing, temperature rise load testing, plug-in durability testing, and wire tension testing. All indicators meet the requirements of North American electrical safety regulations.

It has a wide range of application scenarios, and can be used in home settings to expand the capacity of sockets in living rooms and bedrooms, while also supplying power to devices such as televisions, routers, set-top boxes, and digital Chargers; The office scene can expand the desktop power interface and adapt to office equipment such as computers, monitors, printers, desk lamps, etc; It can also be used for temporary wiring on construction sites, exhibition setup, outdoor operations, etc., while supplying power to multiple electric tools and lighting equipment. It can be used as an output component for finished extension cords, as well as for customized wire processing and replacement of old equipment. It is a highly practical and widely adaptable standard power expansion plug-in component in the North American power supply environment.