The Siemens 5SY5102-7CC11 is a SENTRON miniature circuit breaker built for DC railway auxiliary circuits — 1 pole, C-curve, rated 2 A with a 10 kA breaking capacity per IEC 60947-2 at 220 V DC. That DC rating is the headline here: most 1P MCBs in this width are AC-only or derated hard on DC. This one holds its 10 kA interrupting rating at 220 V DC, which matters for traction battery banks, wayside signal power, or onboard 110/220 V DC distribution where a standard AC-rated breaker would weld its contacts on a fault.
Siemens 5SY5102-7CC11 SENTRON MCB, 1P C 2A DC Railway, 10kA
MPN5SY5102-7CC11
Siemens SENTRON 5SY5102-7CC11, miniature circuit breaker, 1-pole, C-curve, 2 A, 220 V DC / 230/400 V AC, 10 kA, for railway applications.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Number of poles | 1 |
| Pole design | 1P |
| Application suitability | Railway |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Fastening method | Quick assembly system |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Modular width units | 1 |
| Torque, min. | -40 °C |
| Torque, max. | 75 °C |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| IP protection class | IP20, with connected conductors |
| Pollution degree | 3 |
| Halogen-free | Yes |
| Silicone-free | Yes |
Product details
Frequently asked questions
What is the breaking capacity of 5SY5102-7CC11 at 220 V DC?
10 kA per IEC 60947-2. That is the rated short-circuit breaking capacity at 220 V DC — the value that governs its use in DC auxiliary circuits.
What compliance documentation is available for 5SY5102-7CC11?
The MCB carries IEC 60947-2 certification for breaking capacity. It is halogen-free and silicon-free, which supports compliance with railway fire-safety standards. The evidence does not list RoHS, REACH, UL, or CSA marks directly; verify with the manufacturer for specific declarations.
Where can I buy 5SY5102-7CC11?
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 price and lead-time estimate.
MPN
5SY5102-7CC11