280kg Magnetic Door Lock

280kg Magnetic Door Lock

The 280kg Magnetic Door Lock is a high-strength electromagnetic lock designed for secure access control applications. With a holding force of up to 280kg, it provides reliable locking for office doors, glass doors, metal doors, and other entry points commonly used in commercial and residential security systems.
It operates on the principle of electromagnetic force to keep the door securely closed when powered, and releases instantly when de-energized, offering both security and safety in emergency situations. Suitable for access control systems such as card readers, keypads, biometric terminals, and exit buttons.

The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation.

The magnetic lock relies upon some of the basic concepts of electromagnetism. Essentially it consists of an electromagnet attracting a conductor with a force large enough to prevent the door from being opened. In a more detailed examination, the device makes use of the fact that a current through one or more loops of wire (known as a solenoid) produces a magnetic field. This works in free space, but if the solenoid is wrapped around a ferromagnetic core such as soft iron the effect of the field is greatly amplified. This is because the internal magnetic domains of the material align with each other to greatly enhance the magnetic flux density.