Schneider Electric front element, yellow ZB4BC57. Manufacturer: Schneider Electric. Designation: Front element, yellow pushbutton 22mm. Type: ZB4BC57. Colour of knob: yellow. Design of lens: round. Diameter of cap: 40 mm. Hole diameter: 22.5 mm. Protection class (IP): IP66. Protection class (NEMA): other. Design of knob: high. Suitable for lighting: no. With lighting: no. Switching function latching: no. Push-button: yes. With front ring: yes. Material of front ring: metal. Colour of front ring: black. Suitable for emergency stop: no. Type of release: without. Further details: Metal command and signalling devices, diameter 22mm. The command and signalling devices designed for industrial applications combine simple mounting with great flexibility and robust design. The robust 3-point fixing with only one screw offers an enormous amount of security and saves mounting time. EAN: 3389110823752.