The characteristics of a 3-pole small South Africa plug insert, also known as a South African electrical plug, typically include:

1. Configuration: The plug insert is designed to be compatible with the South African electrical socket outlets, commonly known as the Type M socket. It consists of three pins arranged in a triangular configuration, with two larger pins on the top and bottom and a smaller grounding pin in the middle.

2. Voltage and Current Rating: The plug insert is designed to handle the electrical voltage and current standards used in South Africa. The standard voltage in South Africa is 230 volts, and the current rating for household circuits is typically 16 amperes.

3. Grounding: The small South Africa plug insert includes a grounding pin in the center to provide a connection to the grounding system of the electrical outlet. This grounding pin helps protect against electric shocks and provides a path for excess electrical current in the event of a fault.
   

4. Durability and Construction: The plug insert is usually made of durable materials such as high-quality plastic or heat-resistant polymers. The pins are typically made of brass or other conductive metals to ensure a reliable electrical connection.

5. Compatibility: The 3-pole small South Africa plug insert is compatible with a wide range of electrical devices and appliances designed for use in South Africa. It can be used with various household appliances, electronics, and power cords that are specifically designed to fit the South African socket outlets.

6. Safety Features: The plug insert may incorporate safety features such as insulation barriers between the pins to prevent accidental contact and electrical shocks. These safety measures help protect users and prevent damage to the electrical system.

7. Standard Compliance: The plug insert is designed to comply with relevant safety and quality standards established by regulatory authorities. These standards ensure that the plug insert meets the necessary requirements for electrical safety and performance.

8. Compact Size: The small South Africa plug insert is designed to be compact and portable, making it convenient for travel and everyday use.