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Ningbo Biaoda Electric Co., Ltd.

About Us

Electrical Appliance Manufacturer

Ningbo Biaoda Electric Co., Ltd. is China Brazil Power Plug Manufacturers and custom Brazil Power Plug factory specializing in producing Electric Main Products, such as adaptors, power strips, plugs, sockets, extension cords, cable reels and so on.

In addition, we have set up R/D department that specially engages in developing new products. Our products, especially the AC general connector series, can be widely used in PC, electronic product, electric appliances and dynamic tools. In order to supply first-class products for our customers, we have introduced advanced equipments.

We Serve Our Clients With the Our Capacity


  • 2005


  • 20+

    Industry Experience

  • 10000

    Plant Area

  • 200


Coming From China
Marketing To The World

International system certification, effectively consolidate the competitiveness of the enterprise.

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Industry Knowledge Expansion

The Evolution of Brazil's Power Plug Design

Brazil's power plug, with its distinctive three-hole design, stands as a testament to the country's commitment to electrical safety and adherence to international standards. The design, regulated by the NBR 14136 standard, reflects a journey of innovation and development that has led to the creation of a reliable and secure electrical connection system for the nation.
The upper round holes, designed for the power pins, and the lower grounding hole together ensure a secure and reliable connection that adheres to the NBR 14136 standard. This design goes beyond mere compliance; it reflects a thoughtful approach to electrical safety, meeting Brazilian electrical codes and international standards. By prioritizing the safety of users and their electrical equipment, Brazil's power plug design exemplifies the nation's dedication to modernizing its infrastructure for the well-being of its citizens.

Anatomy of the Brazilian Power Plug: Safety at its Core

At the heart of Brazil's power plug is a three-hole configuration that ensures the seamless integration of electrical devices into the country's power supply. The upper two round holes are strategically positioned to accommodate the two pins of the power socket. These pins, when inserted into the holes, establish a secure connection that enables the efficient transfer of electrical energy. This meticulous alignment prevents accidental disconnection and minimizes the risk of electrical arcing.
However, it's the lower, larger hole in the design that holds the key to electrical safety in Brazil. This cavity serves as the designated location for the grounding pin. Grounding is an essential feature of electrical systems that diverts excess electricity away from the device and into the earth. In cases of electrical faults or malfunction, this grounding pin plays a critical role in preventing electrical shocks and reducing the likelihood of fire hazards. By placing this grounding pin in a prominent and easily accessible position, the Brazilian power plug design prioritizes the safety of both users and their electrical equipment.

Meeting Brazilian Electrical Codes and Safety Standards

The Brazilian power plug's three-hole design is not just a matter of aesthetics or convenience; it is a well-thought-out response to the country's specific electrical requirements and safety regulations. The NBR 14136 standard, developed by the Brazilian Association of Technical Standards (ABNT), serves as the benchmark for electrical plugs and sockets in the country. This standard outlines the specifications for voltage, current, and dimensions, among other factors, to ensure compatibility and safety.
The adoption of the three-hole design reflects the harmonization of Brazilian electrical codes with international standards. By aligning with the IEC 60906-1 standard, Brazil ensures that its power plug design is in sync with other countries that follow this international norm. This harmonization facilitates global compatibility and fosters safe electrical connections for travelers and international businesses operating in Brazil.
Moreover, the choice of a three-hole design reinforces the country's dedication to electrical safety. The separation of the grounding pin from the main power pins minimizes the risk of electrical shocks, especially in environments where moisture and external factors could compromise safety. This separation also facilitates easier inspection and maintenance of the plug, enabling prompt identification of potential issues before they escalate into hazards.

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