For a 1-module-wide (18 mm) unit, the 15 kA IEC rating gives headroom on industrial panels where fault current is higher than a residential 10 kA threshold.
IP20 with connected conductors; IP40 in the handle area.

Siemens SENTRON 5SJ4 series, 5SJ4118-7HG41, 1-pole miniature circuit breaker, C-curve, 10 kA (EN 60898) / 15 kA (IEC 60947-2).
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breakers |
| Brand name | SENTRON |
| Number of poles | 1 |
| Pole design | 1P |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Overvoltage category | 3 |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Fastening method | on standard mounting rail |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 mm |
| Height | 110 mm |
| Depth | 70 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, IP 40 in the handle range |
| Pollution degree | 3 |
| Halogen-free | Yes |
| Silicone-free | Yes |
For a 1-module-wide (18 mm) unit, the 15 kA IEC rating gives headroom on industrial panels where fault current is higher than a residential 10 kA threshold.
IP20 with connected conductors; IP40 in the handle area.
10 kA per EN 60898 and 15 kA per IEC 60947-2, both at 400 V AC. The 15 kA IEC rating is the one that matters for industrial panel coordination.
18 mm wide (1 modular unit), 70 mm deep, 110 mm high. Snaps onto standard 35 mm DIN rail. Combined terminals top and bottom.
The part carries EN 60898 and IEC 60947-2 ratings. It is halogen-free and silicon-free. For specific RoHS/REACH/UL declarations, request them with the RFQ.
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