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Siemens 5SY5250-7CC11 — 2-Pole MCB (DIN Rail)

Siemens 5SY5250-7CC11 SENTRON MCB, 2P C 50 A, 10 kA DC, Rail

MPN5SY5250-7CC11

Siemens SENTRON 5SY5250-7CC11, 2-pole C-curve miniature circuit breaker, 50 A, 10 kA DC breaking capacity at 440 V, designed for railway applications.

Siemens 5SY5250-7CC11 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY5250-7CC11 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
5SY5250-7CC11 — Electrical
ParameterValue
Number of poles2
5SY5250-7CC11 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY5250-7CC11 — Mechanical
ParameterValue
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY5250-7CC11 — Environmental
ParameterValue
Pollution degree3

Product details

Railway-rated DC MCB, 50 A, C-curve

The Siemens SENTRON 5SY5250-7CC11 is a 2-pole miniature circuit breaker rated for universal current, with a C tripping characteristic and a 50 A rating. It is specifically designed for railway applications, carrying a 10 kA breaking capacity at 440 V DC per IEC 60947-2.

DC voltage and breaking capacity

The 10 kA breaking capacity at 440 V DC (per IEC 60947-2) is the figure that governs fault clearance on a DC bus — it must exceed the prospective short-circuit current at the installation point.

Panel integration and environment

Ambient range from -40 °C to 75 °C, with humidity derating above 55 °C. Polarity must be observed on the DC supply; the neutral conductor is not switched.

Frequently asked questions

What is the breaking capacity of the 5SY5250-7CC11 at DC?

10 kA at 440 V DC per IEC 60947-2.

Will the 5SY5250-7CC11 drop into a panel specified for the 5SY5240-7?

Yes — both share the same 2-pole footprint (36 mm wide, 76 mm deep), quick-assembly DIN-rail mount, and C-curve. The 5SY5250-7CC11 is rated 50 A versus 40 A for the 5SY5240-7, so it is a direct form-fit replacement if the higher current rating is acceptable for the circuit.

Where can I buy the 5SY5250-7CC11?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
5SY5250-7CC11