A 3 pole Swiss plug insert is an electrical connector designed for use in Switzerland and other countries that use the Swiss type plug. Some of the characteristics of a 3 pole Swiss plug insert may include:

1. 3 Poles: A 3 pole Swiss plug insert has three electrical poles, which consist of two live wires and one neutral wire.

2. Standardized Design: The Swiss plug insert conforms to the Swiss standard SEV 1011, which ensures compatibility with other Swiss electrical equipment.

3. High-Quality Material: The Swiss plug insert is made of high-quality, durable materials that are resistant to wear and tear and provide excellent electrical conductivity.
   

4. Easy to Install: The Swiss plug insert is easy to install, as it simply snaps into place in the corresponding socket.

5. Safe: The Swiss plug insert is designed to be safe, with features such as a grounding pin and insulation to prevent electrical shock.

6. Versatile: The Swiss plug insert can be used with a wide range of electrical equipment, including appliances, power tools, and electronics.

7. Compact Design: The Swiss plug insert is designed to be compact and lightweight, making it easy to transport and store.

8. Reliable: The Swiss plug insert is reliable and provides a secure connection between the electrical equipment and the power source.

9. Cost-Effective: The Swiss plug insert is a cost-effective option for electrical equipment, as it is widely available and compatible with a range of devices.