High-voltage power distribution and protection
Breaktor circuit protection
As vehicle electrification becomes more prevalent, the demand for increased power levels and charging rates also grows. With these changes and advancements in technology come new vehicle safety implications and challenges.
Electric vehicle (EV) systems must safely and reliably protect people and components during all load situations including short circuits, overloads and collision events, as well as quick charging and normal driving scenarios. Eaton’s all-new Breaktor® circuit protection is the complete solution.
Intelligently safe
Self- and external triggering device can sense current spikes to interrupt the circuit
Reliable
Switching and protection function in one unit, with consistent reaction time and no fatigue
Ease of service
Resettability means no device replacements required
核心功能
- Breaktor® improves vehicle safety and protects components from any level of overcurrent condition.
- Less than 4-milisecond actuation for short circuit faults up to 900 volts and 25,000 amps
- Resettable like a circuit breaker, which enables reactivation of the device following a functionality check rather than a time-consuming vehicle service appointment
- Current limiting in the event of a short circuit, independent of the current direction
- Enables up to 350kW DC fast charging when used to protect and switch the DC fast-charge circuit
- Available in multiple configurations including multi-pole configurations
- Additional optional features such as mirror contact, adjustable overcurrent trigger levels, and options for external triggering
- Permanent magnet system: Helps control location of arcing
- Splitter plates: Split the arcing into smaller, lower voltage arcs to help with extinguishing
- Current sensor: Senses unsafe overcurrent conditions and communicates to on-board PCBA
- Driver electronics: Powers Breaktor® actuation and deenergizes coil during overcurrent event
- Driver coil: Actuates Breaktor® with low voltage current
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General Specifications
| Max. operating voltage | 2 x 450/425V d.c. or 900V/850V d.c. | max. 2000m ASL / max. 4500m ASL |
| Contact configuration | 1 NO or 2 NO | |
| Rated current (continuous load, thermal) | 350- 750A* | based on generic load profile, bidirectional |
| Max. switch on current | Approx. 1,7kA(+/-20%) | current sensor threshold, adjustable |
| Max. overload switch off current | 25kA | |
| Overload switch off time | up to 4kA < 7ms 4 – 10kA < 6ms 10 – 25kA < 4ms |
includes sensing, triggering, and arcing time; load and time constant depending |
* When cooling system is leveraged. All specified values are dependent on system parameters and subject to change. Other models and configurations are available; consult Eaton for details.
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Download our Breaktor whitepaper
As electric vehicle systems advance, so must power protection technology. Learn how the next generation of circuit protection can help develop the safest EV systems.
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