Efficiency Meets Force

We design, build, and produce electropermanent magnet systems — from FEA-optimized magnetic circuits and custom driver electronics to volume manufacturing. Over one million magnets delivered.

View Products How EPMs Work →

Electropermanent magnet cross-section showing NdFeB and AlNiCo magnets with switching coil

The Technology

Switchable. Permanent. Zero Power.

An EPM combines two magnets — NdFeB (permanent, high coercivity) and AlNiCo (switchable, medium coercivity) — wrapped by a coil. A brief current pulse flips the AlNiCo to turn the external field on or off.

Both states hold indefinitely with no electricity. Power is only needed for the momentary switching pulse.

3D magnetic flux streamlines in ON state showing field flowing through workpiece

3D flux streamlines — ON state

3D FEM mesh showing EPM material bodies — NdFeB, AlNiCo, steel

FEM mesh — quarter symmetry model

Full technical overview →

Zero holding power: Magnetic state persists with no electrical input. Dramatically reduced energy consumption compared to electromagnets.
Fail-safe operation: Maintains grip during power failures. The state is stored in the magnets themselves, not maintained by electricity.
Millisecond switching: 1–10 ms state changes with a short current pulse. No thermal buildup, no moving parts, no mechanical wear.
Compact and robust: No large coils or cooling systems required. Significantly smaller than equivalent electromagnet assemblies.

Where EPMs Excel

Deployed across a growing range of industries — from drone payloads to factory floors.

View all applications →

UAV Payload Systems Zero-power payload hold and release during flight Space & Aerospace Docking, separation, deployable structure latches Climbing & Inspection Robots Switchable magnetic adhesion for vertical surfaces Underwater Systems ROV station-keeping, AUV docking, subsea tooling Modular Robotics Self-assembling, reconfigurable robot connections CNC & Industrial Workholding, lifting, grippers, brakes, fixturing

Track Record

Proven at Scale

Over one million magnets produced. Standard modules from 100 g to 1 kg. Adhesion-to-weight ratios from 218:1 to 480:1. Production in USA and Asia.

View product specifications →

Our EPM-250 flagship module weighs 250 grams and holds 120 kgf on bare steel — a 480:1 ratio. A 25 kg payload drone needs just 250 g of EPM to hold its payload with a 10× safety factor, drawing zero power during flight.

We handle the full stack: FEA-optimized magnetic circuit design, custom driver electronics with your choice of communication protocol, and volume manufacturing backed by qualified material suppliers.

FEMM simulation showing magnetic flux density distribution in an EPM assembly

FEMM flux density simulation — optimized magnetic circuit

Ready to Integrate EPM Technology?

Whether you're exploring feasibility or ready to deploy, our team can guide your EPM project from concept to production.

Get in Touch