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Magnetic proximity switch
Magnetic proximity switches, also known as magnetic reed switches or magnetic sensors, are non-contact switching devices that detect the presence of a magnetic field. These switches operate using a hermetically sealed reed contact that closes or opens when exposed to a magnetic field from a permanent magnet or an electromagnet. Key technical par...
Magnetic proximity switches, also known as magnetic reed switches or magnetic sensors, are non-contact switching devices that detect the presence of a magnetic field. These switches operate using a hermetically sealed reed contact that closes or opens when exposed to a magnetic field from a permanent magnet or an electromagnet. Key technical parameters include switching voltage (typically 24V DC to 250V AC), switching current (ranging from 0.1A to 3A), contact configuration (normally open NO, normally closed NC, or changeover SPDT), and sensing distance (from 1mm to 60mm depending on magnet strength and housing material). They are available in various housing styles such as cylindrical M8, M12, M18, M30, rectangular, and flush or non-flush mounting versions, with protection ratings up to IP67 for harsh industrial environments.
These switches are widely used in industrial automation for position sensing, end-of-travel detection, door and hatch monitoring, cylinder piston position detection in pneumatic and hydraulic systems, and safety interlocking in machinery. They are common in sectors like packaging, material handling, automotive assembly, food and beverage processing, and building automation for elevator door control and security systems. Their robust design makes them suitable for dusty, wet, or vibration-prone environments where mechanical switches would fail.
Subcategories include cylindrical magnetic proximity switches (e.g., M8, M12, M18, M30 series), rectangular block sensors, slot-type sensors for cylinder applications, and explosion-proof versions for hazardous areas. Key article codes often follow patterns like BES, BMF, or MPS prefixes, with numbers indicating housing size, sensing range, and electrical connection (e.g., M12x1, 2m cable, or M12 connector). Common models include BES M12MI-PSC20B-S04G, BMF 303K-PS-C-2-S49-00, and MPS-12T-10-NO. These codes typically break down as: series (BES), housing type (M12), sensing principle (MI), output (PSC), and connection (S04G).
At Electric Automation Network, we offer real-time pricing, detailed technical datasheets, and global express shipping for all magnetic proximity switches. Our team of specialized engineers provides personalized technical support to help you select the right sensor for your application, ensuring optimal performance and reliability. We stock a wide range of brands and models to meet your automation needs.
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