Siemens SENTRON RCBO, 1P+N, B-curve, 20 A, 6 kA (EN 60898), 300 mA Type A, 2 MW, IP20.
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Product designation | RCBO |
| Product design / construction | Instantaneous |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Width in modular units | 2 |
| Maximum | 75 °C |
| Minimum | -40 °C |
| Width | 36 mm |
| Height | 90 mm |
| Depth | 77 mm |
| Installation depth | 70 mm |
| Parameter | Value |
|---|---|
| IP degree of protection | IP20, if the distribution board is installed, with connected conductors |
| Parameter | Value |
|---|---|
| Tripping Characteristic Class | B |
The Siemens SENTRON 5SU1656-6KK20 is a 1P+N RCBO in a 2-module-wide (36 mm) housing. It combines a B-curve MCB with a Type A residual current device rated at 300 mA. The 20 A rating at 30 °C derates to 18.8 A at 40 °C, 17.4 A at 45 °C, and down to 14.6 A at 70 °C.
The 2 MW width (36 mm) means it occupies two standard 18 mm slots — plan the rail fill accordingly, especially when grouping several RCBOs next to a main switch.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
No related articles