Adafruit
5V Electromagnet - 25 Kg Holding Force - P40/20
This 5V electromagnet provides 25kg of holding force when energised with approximately 5V DC (4–6V working range). When the power is switched off, the magnet...
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This 5V electromagnet provides 25kg of holding force when energised with approximately 5V DC (4–6V working range). When the power is switched off, the magnet loses its magnetic field, making it suitable for controllable locking, sorting, and pick-and-place applications.
Since it behaves as an inductive load, you should drive it through a motor or solenoid driver with flyback (kick-back) protection to avoid damaging your microcontroller.
Key Features
- Holding Force – 25kg (55 lb)
- Working Voltage – DC 4–6V (nominal 5V)
- Model – P40/20
- Instant On/Off – Magnetic only when powered
Ideal For
- DIY electromagnetic locks and latches
- Medium-weight pick-and-place mechanisms
- Robotics and automation projects
- Interactive installations and exhibits
Package Contents
- 1× 5V Electromagnet (25kg holding force, P40/20)
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- inductive load
- A device with a coil, such as a relay, solenoid, or motor, that stores energy in a magnetic field. Inductive loads can create voltage spikes when switched off, so they often need protection components like diodes.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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