Siemens SENTRON 5SL6425-7BB, 4-pole miniature circuit breaker, C tripping characteristic, 25 A rated at 400 V AC, 6 kA breaking capacity, 4 MW width.
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Application suitability | Residential buildings/infrastructure |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Pole configuration | 4P |
| Rated current (In), AC | 25 A |
| Rated voltage, AC (multi-phase) | 440 V |
| Rated voltage, DC (max.) | 72 V |
| Parameter | Value |
|---|---|
| Tripping characteristic (trip curve) | C |
| Rated breaking capacity (Icn), per EN 60898 | 6 kA |
| Rated breaking capacity, per IEC 60947-2 | 6 kA |
| Energy limitation class | 3 |
| Overvoltage category | III |
| Pollution degree | 2 |
| Degree of protection (IP) | IP20, with connected conductors |
| Touch protection | Yes |
| Parameter | Value |
|---|---|
| Width in modular units | 4 |
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Mounting position | any |
| Tightening torque, max. | 75 °C |
| Tightening torque, min. | -40 °C |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Parameter | Value |
|---|---|
| Mechanical service life (switching cycles, typ.) | 10 000 |
The Siemens SENTRON 5SL6425-7BB is a 4-pole miniature circuit breaker (MCB) with a C-curve tripping characteristic, rated 25 A at 400 V AC and 50 Hz. The kit is complete: breaker, busbar stabs, and terminal screws are in the box.
Width is 72 mm (4 modular units), depth 76 mm, height 90 mm.
Rated 25 A at 30 °C ambient; derates to 23.68 A at 40 °C, 23 A at 45 °C, and 21.54 A at 55 °C. Operating range covers -40 °C to 75 °C.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here.
The 5SL6550-7BB is a 4-pole C-curve MCB in the same SENTRON family but rated 50 A instead of 25 A. It shares the same 6 kA breaking capacity, 400 V AC rating, and 4-MW width, so it drops into the same DIN-rail footprint without rewiring — but the higher amp rating means it will not clear an overload on a 25 A circuit. For a direct amp-for-amp swap, stay with the 5SL6425-7BB.
Depth is 76 mm, width 72 mm (4 modular units), height 90 mm. Installation depth behind the panel face is 70 mm.
Yes — both are 4-pole C-curve MCBs in 72 mm wide bodies that mount on standard DIN rail. The 5SL6425-7BB is rated 25 A versus 50 A for the 5SL6550-7BB, so the busbar and downstream conductors must be sized for 25 A. If the panel was wired for 50 A, dropping in a 25 A breaker is safe but limits the circuit capacity.
The part is designed to EN 60898 and IEC 60947-2 for breaking capacity. It is halogen-free and silicon-free. The manufacturer typically provides CE, UKCA, and EAC declarations on request through the standard documentation portal.
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