Auxiliary switches report the status of the main devices on which they are mounted. The DHi 12 auxiliary switch is suitable for FI/LS combinations of the DRCBO 3 series, the DAFDD 1 arc fault protection device and the ELS 3 series miniature circuit breakers. In auxiliary switch mode, it signals the switching on and off of the circuit breaker. In fault signal switch mode, it signals the tripping. Properties: Auxiliary and fault signal switch function, can be retrofitted, small size, Mounting type: to the left of the base unit by snapping onto the main unit, quick fastening to the mounting rail, installation position as desired, Areas of use: These devices are suitable for querying the operating status of power supplies in residential and commercial buildings as well as industrial plants. Notes: The auxiliary switch does not affect the function of the base unit.
| Property | Value |
| Rated switching current: | 4 A |
| Rated voltage: | 250 V |
| Number of fault signal switches: | 1 |
| Device mounting: | FI/LS switch |
| Factory fitted: | no |
| Suitable for max. number of poles of the main contact unit (total): | 2 |
| Suitable for max. current of the main contact unit: | 40 A |
| With autotest for residual current function: | no |
| Number of contacts as Changers: | 2 |
