Glass Tube for Reed Switch

The tube is well-suited for manufacturing reed switches. A reed switch is a simple yet effective electromechanical device that operates in response to a magnetic field. It typically consists of two flexible, ferromagnetic metal reeds enclosed within a hermetically sealed glass tube. When a magnetic field - generated by either a permanent magnet or an electromagnetic coil - is applied, the reeds are drawn together, closing the circuit. Once the magnetic field is removed, the reeds separate, breaking the circuit. Known for its compact design and durability, the reed switch's sealed construction protects it from corrosion and allows for safe operation in harsh or explosive environments. It is widely used in applications such as door and window sensors in security systems. Reed switches are highly sensitive, require no power to operate, and can switch a broad range of voltages and currents, making them suitable for both low-leakage and high-voltage applications.

feature application available size Chemical Properties Physical Properties

Feature

This glass tube is designed for the precision cutting and hermetic sealing of reed switches. With diameters typically ranging from 1 mm to 5 mm, it can be customized to meet specific customer requirements. Its high iron content gives the glass a green or blue-green appearance and provides excellent infrared absorption while allowing ultraviolet transmission.

Application

The tube is ideal for manufacturing reed switches - simple electromechanical devices activated by a magnetic field. Each switch contains two flexible, ferromagnetic reeds sealed in a glass tube. When a magnetic field is applied, the reeds close the circuit; they reopen once the field is removed. Thanks to their sealed, durable design, reed switches resist corrosion and perform reliably in harsh or explosive environments. Common in security systems, they are highly sensitive, require no power to operate, and can handle a wide range of voltages and currents.