ElectricThe ZB2BY4919 is an electronic part manufactured by Schneider Electric. It is a three-pole switch, with a single breakdown mechanism, which functions on the principle of energy stored in an elastic wire. The switch is made of a white plastic, and has contacts of brass, with silver plating on both the movable parts and the terminal screws. It is resistant to overloading, short circuiting, shock, and vibrations, and is capable of handling a high current of 25A. It is suitable for a wide range of applications, such as controlling power in lighting, HVAC systems, motor protection, etc. The product is certified to be compliant with European Union standards.