Siemens SENTRON 5SL4540-8 miniature circuit breaker, 2-pole (1P+N), D tripping characteristic, 40 A rated current, 10 kA breaking capacity per EN 60898, 230 V AC.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Number of poles | 2 |
| Application suitability | Residential buildings/infrastructure |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Rated value (EN 60898) | 10 kA |
| Energy limitation class | 3 |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| 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 | 2 |
| Halogen-free | Yes |
| Silicone-free | Yes |
The Siemens SENTRON 5SL4540-8 is a 2-pole (1P+N) miniature circuit breaker with a D tripping characteristic, rated 40 A at 30 °C and 230 V AC.
Rated current is 40 A at 30 °C ambient. At 40 °C it derates to 37.89 A, at 45 °C to 36.8 A, and at 55 °C to 34.47 A.
The 5SL4540-8 occupies 2 modular width units (36 mm) on a DIN rail, with an installation depth of 70 mm and overall depth of 76 mm. Halogen-free and silicon-free construction is noted for environments sensitive to outgassing.
10 kA per both EN 60898 and IEC 60947-2, at 230 V AC.
The 5SL4540-8 is a 2-pole (1P+N) D-curve 40 A breaker; the 5SL6550-7BB is a different rating and pole configuration. They share the same SENTRON 5SL family footprint (2 MW, 36 mm wide, DIN rail mount), so the mechanical fit is identical, but the electrical ratings differ — verify the load requirements before substituting.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your volume.
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