Schneider Electric Harmony XB4 2-position Key Switch Head, Spring Return to Centre, 22 mm Cutout

This Harmony XB4, black head with key (key no.421E) for key selector switch has 2 positions, operates with spring-return-from-right-to-left mechanism with key withdrawal on left 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.

Featuring black handles and a range of positions, Schneider Electric offers the Harmony ZB4 series of key switch heads. Round and chrome plated metal, they are designed to be durable, simple to set up, flexible and robust. Each switch head contains an ingenious locking system which is a snap-fit head and body, the heads can be tightened with a single screw to ensure secure and simple mounting. We have a large range of Harmony ZB4 key switch heads available in our catalogue with different positions and operator type to suit your needs.

• Low-load electrical contact

• Conformity with IEC, UL, CSA standards

Applications - Designed for industry, infrastructure and service sector use including: