An electro-permanent magnet designed for aerospace and robotic applications.

Zubax EPM is an electro-permanent magnet designed for aerospace and robotic applications. It combines the advantages of electro- and permanent magnets by being able to switch between the on-state and off-state on demand (like an electromagnet); while consuming zero power in either state (like a permanent magnet). The device supports a variety of communication interfaces that enable easy integration into any end system.

Zubax EPM follows high safety and reliability standards that ensure dependable operation in hostile environments.


  • Payload attachment in aerial vehicles.
  • Workholding in CNC machines, manipulators, and robots.
  • Magnetic locks, clamps, and holders.


  • Strong magnet in a very compact and lightweight form-factor.
  • Zero power consumption in either on or off state.
  • Fast on↔off state transition in approx. 1 second.
  • Low (de-)magnetization energy consumption.
  • Entirely solid-state construction, no moving parts inside.
  • IP68 rated — dust-tight, submersible.
  • AEC-Q grade 2 electronics.
  • Resistant to vibration, mechanical stress, high and low temperatures, electromagnetic interference, humidity, dust, and some aggressive chemicals.
  • Wide power supply voltage range ensures trivial integration into the end system.
  • Compatible with industry-standard interfaces:
    • Cyphal/CAN FD control with diagnostic telemetry;
    • RCPWM control input;
    • voltage level control input.


Three types of EPM are available:

  • EPM401M - optimized for cost-sensitive applications.
  • EPM401MA - nearly a drop-in replacement for OpenGrab EPM v3
  • EPM402M - optimized for mission-critical applications due to doubly-redundant CAN FD interface.
Variant Mass, g Dimensions, mm Cyphal/CAN iface Analog iface
EPM401M 70 40✕40✕30 Single UCANPHY Micro No
EPM401MA 70 40✕40✕30 Single UCANPHY Micro Yes
EPM402M 70 40✕40✕30 Double UCANPHY Micro No

For low-volume orders, please proceed to the online store. For large orders and long-term supply options, please get in touch.

Related announcements and discussions

Cyphal/serial specification release announcement
Announcing Telega v1.0
Cyphal/UDP specification release announcement
Zubax EPM 4 - an electro-permanent magnet for UAV applications
Using Telega v1 with ArduPilot-based flight controllers
Using Telega v1 with PX4-based flight controllers
List of all CAN bit rates supported by Babel
Babel and yakut
SocketCAN problem
Zubax Babel, Ark-Flow and pycyphal
A useful list of aliases to put in your .bashrc for working with DCP, Babel and Babel-Babel
Zubax babel SLCAN ACK timeout
UAVCAN messages from Babel serial
Alternative access to micro usb on Babel
Issues with flashing Zubax Babel & UAVCAN GUI Tool
HMC5883L Magnetometer publish
SW4STM project of source gets stuck in tx loop
Compiling problem



Base technologies


Contact Zubax Robotics for information about quality and standard compliance.


Zubax EPM is manufactured in the European Union.

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