The 5SU9356-7KN06: The 6 A rating holds at 30 °C ambient; derate to 5.64 A at 40 °C, 5.46 A at 45 °C, 5.22 A at 50 °C, and 4.86 A at 55 °C. The 30 mA Type A residual-current element catches sinusoidal AC faults and pulsating DC faults (typical of rectified loads like VFDs, LED drivers, or switched-mode supplies). It is instantaneous — no intentional delay — so it trips within 40 ms on a ground fault. That makes it unsuitable for circuits with high leakage at startup (e.g., long cable runs or multiple filtered drives) where a G/S type with short-time delay would be needed.

Siemens 5SU9356-7KN06 SENTRON RCBO, 6A C-curve 30mA, 2-pole
Siemens SENTRON RCBO, 5SU9356-7KN06, 2-pole, 6 A rated, C characteristic, 30 mA Type A RCD, 10 kA breaking capacity per IEC 60947-2, 2 MW width.
Specifications
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Product designation | RCD-operated circuit breaker |
| 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 | C |
Product details
Frequently asked questions
What is the breaking capacity of 5SU9356-7KN06?
6 kA per EN 60898 and 10 kA per IEC 60947-2. Use the 10 kA figure for industrial panel SCCR coordination.
What does the 30 mA Type A residual current mean?
It trips on sinusoidal AC ground faults and pulsating DC faults (common with rectified loads). It is instantaneous, so it provides fast protection but may nuisance-trip on circuits with high normal leakage.
Where can I buy 5SU9356-7KN06 and get current pricing?
We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.
Will 5SU9356-7KN06 fit in a panel specified for 5SY6006-7?
Both are 2-MW (36 mm) DIN-rail devices from the SENTRON family, so the footprint is the same. However, 5SU9356-7KN06 is an RCBO (overcurrent + RCD combined), while 5SY6006-7 is a plain MCB. If the panel design assumes a separate RCD module, dropping in this RCBO may change the wiring scheme — verify the circuit topology before substituting.