Siemens SENTRON 5SY8503-7 miniature circuit breaker, 2-pole (1P+N), C characteristic, 3 A rated, 50 kA breaking capacity per IEC 60947-2, 2 MW wide.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Number of poles | 2 |
| 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 | 36 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Modular width units | 2 |
| 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 |
On the DC side it holds 15 kA at 72 V, covering battery-backed or rectified circuits. The 2-pole 1P+N configuration switches both line and neutral, with the neutral pole switching but not protecting — common in single-phase distribution where you want a switched neutral for isolation.
The 76 mm depth fits most shallow gland plates. Rated IP20 with conductors connected — fine for enclosed panels, not for washdown zones.
50 kA at 230 V AC per IEC 60947-2, and 15 kA at 72 V DC per the same standard. Under UL 1077 it is rated 5 kA.
2 modular width units, which is 36 mm. It occupies two standard 18 mm slots on a DIN rail.
It is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.