VB-3121

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Snap action, limit switches, like the VB-3121, are a form of switch commonly used in industrial automation settings. These devices are self-contained, making them ideal for applications where reliable manual safety protection is required. They are also highly dependable, easy to install and maintain, and feature exceptionally fast response times. The VB-3121 is a lightweight, compact, robust switch. It is designed for rapid activation and provides up to 100,000 operations, making it a perfect choice for highly demanding switch applications. The device is ideal for sensing and actuating a variety of applications, including in automatic material handling, machinery guards, high speed production machinery, and foot switches. Its primary purpose is to act as a contact breaker, completing or breaking an electrical circuit.The VB-3121 operates on a magnetic principle, with a Permanent magnet, cage and plunger all incorporated into a single assembly. The Permanent magnet is configured to react to a magnetic field applied by outside forces, either through a manual or switch actuation or through an electro-magnetic force. When the magnetic field is applied to the Permanent magnet, it reacts by pulling the cage and plunger away, breaking the contact points of the switch. This movement causes a snap action, which produces an audible click when the switch is actuated and provides quick and dependable switch action in any temperature and environment. Once the switch is released, the Permanent magnet, cage, and plunger reset, allowing the contact points of the switch to be re-closed. With its low profile design, the VB-3121 can be easily incorporated into confined spaces, allowing for greater flexibility in place of installation. Its precision-plated brass components allow for reliable performance and long life, making the VB-3121 switch ideal for low and high current switching applications.The VB-3121 is also safe to use in hazardous areas, thanks to its UL approved insulation class of UL1077 and UL60950, as well as its intrinsic safety certification IECEx ia and American ia, making it suitable for a wide range of industrial and hazardous area applications, where reliable and fast switching operations are required.

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