The Siemens 5SL3503-7 is a 2-pole (1P+N) miniature circuit breaker from the SENTRON 5SL3 family, rated 3 A with a C tripping characteristic. It is designed for final branch-circuit protection in residential and light infrastructure panels — think lighting, general-purpose outlets, and small appliance circuits where moderate inrush (motors, transformers, LED drivers) is expected. Breaking capacity is 4.5 kA per both EN 60898 and IEC 60947-2, which covers the vast majority of residential and light commercial service-entrance fault levels in 230 V AC networks. The 3 A rating is a common choice for lighting sub-circuits or control transformers — not for high-current feeders. The 1P+N configuration switches the phase and disconnects the neutral, which is typical for single-phase final circuits in many European wiring rules.
Siemens 5SL3503-7 SENTRON MCB, 2-pole C-curve 3 A, 4.5 kA
MPN5SL3503-7
Siemens SENTRON 5SL3 miniature circuit breaker, 2-pole (1P+N), C-curve, 3 A rated current, 4.5 kA breaking capacity per EN 60898 and IEC 60947-2, 230 V AC, 36 mm wide.
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 | 2 |
| Application suitability | Residential buildings/infrastructure |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Rated value (EN 60898) | 4.5 kA |
| Overvoltage category | 3 |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Width | 36 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
MPN
5SL3503-7