Overview
Due to high requirements and increased integration of additional safety-relevant features in the vehicle electrical system architecture, a semiconductor-based solution can provide marked advantages when compared to a mechanical relay, including considerably higher switching speeds. Particularly in the event of a short circuit, every microsecond counts in order to guarantee a safe disconnect. The Electrical Smart Switch protects the supply circuit during charging and discharging bi-directionally in the event of overcharging or a short circuit. In addition, the Electrical Smart Switch permits the pre-charging of the DC network to enhance the service life of system components.
Products from this area are also known by the following keywords:
Solid-state relay, e-relay, circuit breaker, battery switch, e-fuse, disconnect switch, power switch
Our controls support the focal points of future mobility:
Electromobility, safety in an emergency, autonomous driving, industrial applications, H2 applications / drives, fuel cell vehicles
Features
- Uni-directional / Bi-directional design
- Scalable performance design architecture
- Integrated logic (temperature measurement, current measurement in Generation 2)
- Overcurrent detection and safe shutdown in the event of a short circuit
- Pre-charging of on-board networks by means of clocked switching
- Variable cooling connection
- Customer-specific interfaces (electrical, mechanical)
- Qualified according to ECPE AGQ 324 (planned)
- Maximum current capacity and low resistance
Application-Specific Data
Voltage | 48V | 470V | 810V |
---|---|---|---|
Current | 500A | 750A | 750A |
Temperature | -40℃ to +175℃ | ||
Switch-Off Time in the Event of a Short Circuit | 2µs | ||
Active Short Circuit Protection | 2,000A |

Typical Applications
- Battery Switch
- Battery Systems (Battery Disconnect Units)
- DC Circuit Breakers
