The Siemens 5SY7150-8CC is a SENTRON miniature circuit breaker — one pole, rated 50 A at 400 V AC, with a D tripping characteristic. The 15 kA breaking capacity at 400 V (per IEC 60947-2) tells you it can safely interrupt a short-circuit fault up to that level without welding contacts or cascading upstream — important for selectivity in a distribution panel. Under UL 1077 / CSA C22.2 No.235 it's rated 5 kA, so if the installation falls under North American supplementary protection rules, that's the figure to coordinate with. The 18 mm width (one modular unit) and 76 mm depth fit standard DIN-rail enclosures. Terminal range accepts 0.75 to 35 mm² solid or stranded — covers most panel wiring from control circuits to feeder taps. Ambient temperature range is -25 to +55 °C, with humidity derating above 55 °C.
Siemens 5SY7150-8CC SENTRON MCB, 1P, 50 A, D Curve, 15 kA IE
MPN5SY7150-8CC
Siemens SENTRON MCB, 1-pole, D-curve, 50 A, 15 kA at 400 V AC, 18 mm wide, halogen-free, 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 |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| IP protection class | IP20, with connected conductors |
| Halogen-free | Yes |
| Silicone-free | Yes |
Product details
Frequently asked questions
What is the breaking capacity of 5SY7150-8CC?
15 kA at 400 V AC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No.235.
What wire sizes does 5SY7150-8CC accept?
Solid and stranded wire from 0.75 mm² up to 35 mm², with a tightening torque of 2.5 to 3.5 N·m on the screw terminals.
Where can I buy 5SY7150-8CC?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
5SY7150-8CC