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 |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
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.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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