Schneider Electric – Head for key selector switch, Harmony XB4, Ø22 mm 3 position spring return 421E – Harmony XB4 | ZB4BG712
ZB4BG712 – Head for key selector switch, Harmony XB4, Ø22 mm 3 position spring return 421E Schneider Electric This Harmony XB4, black head with key (key no.421E) for key selector switch has 3 positions, operates with spring-return-to-center mechanism with key withdrawal on center position. This head with key provides a versatile interface for controlling your machines. It is easily installed and replaced on compatible complete key selector switch units to provide a secure manner for authorized staff to switch between process or machine operating modes. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66. It has a metal bezel, this makes it Ideal for applications requiring high impact and vibration resistance. It is designed to fit in a standard 22mm cutout, ensuring compatibility when installing in pre-existing machinery. Secure machine and system operation with a key, only available to authorized operators. Its wide range of operating temperatures from -40°C to 70°C allows versatility in usage of product. Key removal allowed in only one of the positions, allowing for advanced interlocking between various parts of a machine or process, while limiting human errors. Head for key selector switch, Harmony XB4, Ø22 mm 3 position spring return 421E ZB4BG712 – Harmony XB4
ZB4BG712 – Head for key selector switch, Harmony XB4, Ø22 mm 3 position spring return 421E Schneider Electric is a Schneider Electric product designed for professional electrical, automation, and infrastructure applications.
This product forms part of the Harmony range and is suitable for installers, contractors, panel builders, maintenance teams, and buyers looking for reliable Schneider Electric components with proven performance and compatibility.
Timers & Control Relays | Plug – in Relays | Pushbuttons and Selector Switches
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