The 5V Electromagnet - 5 Kg Holding Force - P25/20 is a compact, high-performance solenoid electromagnet designed for robotics, automation, and DIY experiments. Operating at 5V DC with a current draw of 0.6A, it delivers a strong holding force of 5 Kg (11 lb) while providing an effective pickup weight of approximately 1 Kg, depending on surface quality and material. Built with an iron core and precision coil, this electromagnet activates instantly when powered and releases objects once power is off, making it reliable and safe for projects. Its compact form factor (25mm × 20mm) ensures easy integration into small-scale designs, while the built-in design helps reduce residual magnetism after de-energization. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Features:
Strong holding force of 5 Kg (11 lb) at just 5V DC.
Approximate pickup weight of 1 Kg (2 lb) for practical use.
Compact 25mm design makes it easy to mount in limited spaces.
Low operating voltage (4–6V DC) for safe and efficient use.
High reliability with iron core + coil structure.
Residual magnetism release ensures smooth operation.
Perfect for robotics, automation, and DIY experiments.
Requires driver circuit with kick-back protection for safe operation.
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Applications:
Robotics projects for object gripping and lifting mechanisms.
DIY electronics for experiments with electromagnetism.
Automation systems requiring small-scale holding/latching solutions.
Educational demonstrations of magnetic fields and solenoids.
Prototyping for smart locks, vending machines, and magnetic tools.
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| General Specifications |
| Model | P25/20 |
| Nominal Voltage | 5V DC |
| Voltage Range | 4–6V DC |
| Current Draw | 0.6A |
| Holding Force | 5 Kg / 11 lb |
| Approx. Pickup Weight | 1 Kg / 2 lb |
| Material | Iron core + Copper coil |
| Design Feature | Residual magnetism release |
| Dimensions | 25mm diameter × 20mm height |
| Shipment Weight | 0.0545 Kg |
| Shipment Dimensions | 3 × 3 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
Working Principle:
An electromagnet is simply a coil of wire. It is usually wound around an iron core. However, it could be wound around an air core, in which case it is called a solenoid. When connected to a DC voltage or current source, the electromagnet becomes energized, creating a magnetic field just like a permanent magnet. The magnetic flux density is proportional to the magnitude of the current flowing in the wire of the electromagnet.
The polarity of the electromagnet is determined by the direction of the current. The north pole of the electromagnet is determined by using your right hand. Wrap your fingers around the coil in the same direction as the current is flowing (conventional current flows from + to -). The direction your thumb is pointing in the direction of the magnetic field so north would come out of the electromagnet in the direction of your thumb. DC electromagnets are principally used to pick up or hold objects
We supply many varieties of electromagnets with a higher power as well as lower, original dimensions, etc to satisfy your unique requirements.
Note: Images may be seen different from actual product in terms of Dimensions
Precaution:
Electromagnets must meet the following conditions to achieve maximum suction:
- The object to be sucked must have good magnetic permeability.
- Proper use of power supply, rated voltage.
- The object to be sucked must be flat and clean.
- The object to be sucked must be greater than or equal to the surface of the magnet( For example the magnet is 20 x 15 mm, so the surface area is S=r²π=10²π mm² so the object to be sucked must be greater than or equal to 10²π mm² )
- The object to be sucked must be greater than 5mm. (If the thickness decreases, the suction decreases)
- The object to be sucked must be close, the middle can’t be interspersed with objects or gaps
- Suction means more than 5cm in thickness, surface roughness, the surface is greater than the cross-sectional area of the electromagnet and maximum suction completely fit together on an iron-based material.
- Electromagnet in working condition electromagnetic conversion would produce a certain amount of heat, electricity more frequently the higher temperature, which is a normal phenomenon.
Package Includes:
1 x 5V Electromagnet - 5 Kg Holding Force - P25/20
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