Do you need AC-DC sensitive residual current circuit breakers that also meet the requirements for preventive fire protection? The devices of the DFS 2/4 type B NK series are the right choice for this. The devices with the NK tripping characteristic offer a lower tripping threshold - with their more conventional upper limit of 300 mA, they can operate up to 150 kHz.
- for facilities at risk of fire
- preventive fire protection up to max. 150 kHz
- upper tripping limit of max. 300 mA
