RCB S24 Class AC
S24 Class AC RCDs: S24 residual current protection for standard AC leakage currents.
- Class: AC class for sinusoidal residual currents.
- Series: S24 range for modular DIN boards.
- Formats: 2P and 4P versions.
- Sensitivity: 30mA and 300mA according to application.
S24 Type AC RCDs: references and application limits
Solera S24 Type AC RCDs detect sinusoidal AC residual current. Select them where this detection type suits the loads and installation requirements. The visible references in this category have 30 mA sensitivity: 2P versions rated 25, 40 and 63 A, and 4P versions rated 25 and 40 A.
Published Type AC references
| Reference | Commercial designation | Rated current | Sensitivity |
|---|---|---|---|
| S24D2P2530 | 2P | 25 A | 30 mA |
| S24D2P4030 | 2P | 40 A | 30 mA |
| S24D2P6330 | 2P | 63 A | 30 mA |
| S24D4P2530 | 4P | 25 A | 30 mA |
| S24D4P4030 | 4P | 40 A | 30 mA |
What to check before choosing Type AC
Do not select the type solely from the building’s use. Electronic equipment may change the residual-current waveform and require a different type. Check the load documentation and protection arrangement before deciding between Type AC, A or B.
For example, S24D2P2530 is rated 25 A, 30 mA and 230 V AC, occupies two modules and mounts on a 35 mm DIN rail. For other references, confirm voltage, modules, neutral, terminals and connections. Retain the MCB protection and coordination required by the circuit.
Frequently asked questions
Can Type AC be selected for any LED lighting circuit?
Lighting alone does not establish suitability. Electronic equipment can produce residual-current waveforms requiring another type. Review the equipment requirements and installation conditions.
Are 2P and 4P references equivalent if both are 30 mA?
No. Shared sensitivity does not make their pole configurations or network applications identical. Compare the complete reference, rated voltage and connection arrangement.
Can repeated tripping be avoided by changing from 30 to 300 mA?
Moving to 300 mA reduces sensitivity and changes the protection. First identify the cause, such as genuine leakage, an insulation fault or unsuitable selection. This is not an equivalent replacement.