EPM Systems for
the Space Economy
Proven · Patented · Flight-Ready
Connexis delivers ElectroPermanent Magnet mechanisms that replace complex mechanical systems with reliable, low-power magnetic solutions — engineered for the harshest environments in the solar system. No moving parts. Bi-stable under power loss. Operational from −180 °C to +140 °C.
$11M+
Awarded Contracts
10+
Active Patents
31
Contracts Delivered
−180 °C
Min Operating Temp
Trusted by leading space & defense organizations
- $11M+
- In awarded government & commercial contracts
- 10+
- Active US, EU & Japan patents
- 31
- Contracts delivered across all EPM product lines
- NASA SBIR
- Phase I & II funded — validated by government R&D
The Technology
Why ElectroPermanent Magnets?
Traditional mechanical latches are complex, failure-prone, and require pyrotechnics for deployment. Passive permanent magnets can't be switched off. EPMs eliminate both problems — combining programmable magnetic control with zero steady-state power draw.
No Moving Parts
Zero mechanical actuators means no wear, no jamming, and no lubrication requirements in vacuum.
Bi-Stable Under Power Loss
EPMs hold their magnetic state indefinitely with zero power draw — latched stays latched even if power fails.
Extreme Temperature Operation
Magnets rated −180 °C to +140 °C. Control electronics −40 °C to +60 °C. Qualified for lunar surface and LEO.
Attraction at 100+ mm
Long-range magnetic force enables passive capture assistance and large misalignment tolerance during docking.
Repulsion / Separation
Switch polarity to generate repulsion force for clean deployment, separation, or ejection — no pyrotechnics.
Built-in Force & Proximity Feedback
Real-time telemetry of magnetic field strength gives structural integrity verification and proximity sensing for free.
Ultra-Low Power
Steady-state draw under 0.1 A at 28 V. State switching requires a single <500 ms pulse — then draws nothing.
Lunar Dust Tolerant
No exposed mechanisms to clog. Residual field remains below Earth surface value (45 µT) at 40–60 mm distance.
Low Mass & Volume
Latching magnet: 20×40×20 mm, <100 g. Control electronics: 100×100×25 mm, <100 g. Modular and scalable.
EPMs vs. the alternatives
| Feature | EPM (Connexis) | Mechanical Latch | Passive Magnet |
|---|---|---|---|
| Moving parts | None | Many | None |
| Controllable on/off | Yes | Yes | No |
| Power to hold | Zero | Often | Zero |
| Long-range capture force | Yes (100+ mm) | No | Partial |
| Repulsion / deployment | Yes | Requires spring | No |
| Lunar dust tolerant | Yes | Risk | Yes |
| Force telemetry | Built-in | External | None |
| Pyrotechnics | Not required | Often | Not required |
Product Suite
EPM Products
Every product ships as a dev kit, prototype, or flight unit (Class D or Class A). Lead times: 3–4 months prototype · 10–22 months flight.
Robotics & Servicing
EPM End-Effector
A modular robotic end-effector that uses EPMs to capture, hold, and release on-orbit assets. Androgynous design with long-range magnetic force for large capture envelopes.
Key Parameters
- Latching Magnet
- 20×40×20 mm, <100 g
- Control Electronics
- 100×100×25 mm, <100 g
- Steady-state Current
- < 0.1 A @ 28 V
- Long-Range Force
- 100+ mm attraction
- Operating Temp
- −180 °C to +140 °C
- Peak Switching Current
- < 1 A
Docking & Berthing
EPM Docking Interface
An androgynous docking interface that uses long- and short-range EPMs for passive approach assist, hard docking, and clean separation — with no pyrotechnics.
Key Parameters
- Docking Magnet Array
- 50 mm Dia × 50 mm, <500 g
- Control Electronics
- 100×100×25 mm, <100 g
- Steady-state Current
- < 0.1 A @ 28 V
- Long-Range Capture
- 100+ mm
- Operating Temp
- −180 °C to +140 °C
- Misalignment Tolerance
- ±15 mm axial, ±5°
HDRM / Deployment
EPM Hold-Down & Release
A low-shock latching and release mechanism replacing pyrotechnic separation bolts. Maintains full holding force under power loss. Ideal for solar panel and instrument deployment.
Key Parameters
- Latching Magnet
- 20×40×20 mm, <100 g
- Control Electronics
- 100×100×25 mm, <100 g
- Steady-state Current
- < 0.1 A @ 28 V
- Separation Force
- Magnetic repulsion
- Operating Temp
- −180 °C to +140 °C
- Structural Verification
- Real-time, built-in
Mechanism Control
EPM Brake / Clutch
An adjustable magnetic holding mechanism for poseable structures and robotic joints. Switches states with a <500 µs pulse and holds indefinitely with zero power.
Key Parameters
- EPM Brake
- 17 mm OD × 15 mm, <250 g
- Control Electronics
- 100×100×25 mm, <100 g
- Steady-state Current
- < 0.2 A @ 12 V
- Switching Energy
- < 20 W pulse (<500 µs)
- Operating Temp
- −180 °C to +140 °C
- Force Verification
- Real-time telemetry
Defense / Logistics
EPM UAV Latch
An EPM-based payload latching interface for medium-to-heavy-lift UAVs. Enables rapid, reliable autonomous payload attach and release for contested logistics operations.
Key Parameters
- Market (SOM)
- $53M addressable
- Operating Voltage
- 28 V
- Steady-state Current
- < 0.1 A
- Dust & Weather
- Tolerant
- Partners
- TB2 Aerospace, DASIS
- Programs
- DIU Contested Logistics
Indicative Unit Costs (Qty 20)
EPM Control Electronics: $861 prototype · $6,160 Class D flight · $89,290 Class A flight · Long-Range Magnet: $1,236 prototype · $2,539 flight · Short-Range Magnet: $657 prototype · $819 flight. Contact us for a full ROM.
Coming soon
Contract Heritage
Coming soon
Get in Touch
Interested in a dev kit, prototype, or flight unit? Reach out at info@connexis.space