Siemens SENTRON 5SU9 series RCD-operated circuit breaker, 2-pole (1P+N), 50 A rated, 10 kA breaking capacity per EN 60898 / IEC 60947-2, Type A fault current, D tripping characteristic, 2 MW width, IP20.
| 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 |
| Maximum | 1.5 W |
| 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 | D |
Type A detection catches pulsating DC fault currents from single-phase rectifiers, so it covers VFD front-ends and switched-mode supplies that a plain AC-sensitive RCD would miss.
Accepts solid or stranded copper up to 35 mm² — enough for the 50 A feed. Touch protection is built in (IP20 with distribution board installed and conductors connected).
At 40 °C it derates to 47 A, at 45 °C to 45.5 A, at 50 °C to 43.5 A, and at 55 °C to 40.5 A.
The 5SU9354-8KK63 is the 63 A version of the same SENTRON 5SU9 RCBO family, same Type A / D-curve / 10 kA. The 50 A variant (8KK50) is the better match for 50 A feeders; the 63 A variant covers the next step up. Both share the same 2 MW footprint and wiring range, so a swap requires no panel rework as long as the load and upstream protection are coordinated.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.
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