The Siemens SENTRON 5SY5250-6KK11 is a 2-pole miniature circuit breaker (MCB) with a B tripping characteristic, rated 50 A at AC and 440 V DC. Its 10 kA breaking capacity per EN 60898 (10 kA per EN 60898-2 at DC) covers typical branch-circuit fault levels in industrial panels.
Siemens SENTRON 5SY5250-6KK11 MCB, 2-pole B-curve 50 A, 10 k
MPN5SY5250-6KK11
Siemens SENTRON miniature circuit breaker, 5SY5250-6KK11, 2-pole, B-curve, 50 A AC / 440 V DC, 10 kA breaking capacity, railway-rated, universal current, IP20 with connected conductors.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Application environment | universal current |
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | B |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Modular width units | 2 |
| Width | 36 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Mounting position | any |
| Min. | -40 °C |
| Max. | 75 °C |
| Protection degree (IP) | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Energy Limitation Class | 3 |
Product details
Frequently asked questions
Will 5SY5250-6KK11 drop into a panel that was specified around 5SY5250-7 without rewiring?
Both share the same 2-module-width (36 mm) DIN-rail footprint and SENTRON form factor, so physical fit is identical. However, the tripping curve and current rating may differ — confirm the B-curve and 50 A rating match the panel design before substituting.
MPN
5SY5250-6KK11