At 16 A it protects a 3.8 kW DC load at 250 V (resistive). The single-pole construction switches the positive leg only; neutral is not switched, so the breaker must be installed in the ungrounded conductor per the polarity marking on the device. Temperature derating is significant: at 40 °C the rating drops to 15.1 A, at 50 °C to 14.16 A, and at 60 °C to 13.14 A. If the panel ambient runs 50 °C, size for 14 A continuous load, not 16 A. The humidity envelope caps at 95% RH up to 55 °C, then derates to 35% RH at 75 °C — relevant for unventilated enclosures in humid tunnels or washdown areas.
Siemens SENTRON 5SY5116-6CC12 MCB, B-16 A, 1P DC, 10 kA
MPN5SY5116-6CC12
Siemens SENTRON 5SY5116-6CC12, DC miniature circuit breaker, 1-pole, B characteristic, 16 A at 35 °C, 250 V DC max, 10 kA, railway design.
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 | B |
| 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 closest functional alternative to 5SY5116-6CC12?
The 5SY3132-6 is a similar SENTRON DC MCB but in a different series (5SY3 vs 5SY5) and typically with a different breaking capacity or temperature rating. The 5SY5116-6CC12 is the railway-specific variant with the 50 m/s² vibration rating and wider temperature range (-40 to 75 °C). Do not assume drop-in interchangeability without verifying the DC voltage rating and breaking capacity of the alternative against your application.
Where can I buy 5SY5116-6CC12?
This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.
What compliance documentation is available for 5SY5116-6CC12?
As a SENTRON railway-series MCB, it is designed to meet EN 50155 (rolling stock) and IEC 60947-2 standards. The halogen-free and silicon-free construction supports fire-smoke-toxicity requirements common in rail approvals. RoHS and REACH declarations are typically available from Siemens on request.
MPN
5SY5116-6CC12