The Siemens 5SY5120-7CC is a 1-pole SENTRON miniature circuit breaker with a C tripping characteristic, rated 20 A at 35 °C (derated to 18.64 A at 40 °C, 17.92 A at 45 °C, 17.16 A at 50 °C, and 16.38 A at 55 °C).
Siemens 5SY5120-7CC SENTRON MCB, 1P C20, 10 kA DC
MPN5SY5120-7CC
Siemens SENTRON 5SY5120-7CC miniature circuit breaker, 1-pole, C tripping characteristic, rated 20 A at 35 °C, DC breaking capacity 10 kA at 220 V, width 18 mm, IP20.
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 | Mechanical engineering / industry |
| 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 5SY5120-7CC's listed depth (76 mm) on this component line?
The listed depth is 76 mm; installation depth is 70 mm.
What is 5SY5120-7CC's listed width (18 mm) on this component line?
The width is 18 mm, which corresponds to 1 modular unit.
MPN
5SY5120-7CC