It interrupts faults up to 6 kA per EN 60898 and carries a UL 1077 / CSA C22.2 No.235 interrupting rating of 5 kA.
Width is 18 mm (1 width unit), depth 76 mm, height 90 mm. Installation depth is 70 mm. Terminal torque spec is 2.5–3.5 N·m.
Siemens 5SY6125-6CC SENTRON MCB, 1P 25A B-Curve, 6kA
MPN5SY6125-6CC
Siemens SENTRON 5SY6125-6CC miniature circuit breaker, 1-pole, 25 A, B tripping characteristic, 6 kA breaking capacity per EN 60898, 400 V AC rated voltage.
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 | 1 |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | B |
| Rated value (EN 60898) | 6 kA |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 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
Frequently asked questions
Where can I buy 5SY6125-6CC and get a price?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is 5SY6125-6CC's depth?
Depth is 76 mm; installation depth is 70 mm. The overall dimensions are 18 mm wide, 90 mm high, 76 mm deep.
What conductor sizes does 5SY6125-6CC accept?
Solid or stranded conductors from 0.75 to 35 mm². Terminal torque is 2.5–3.5 N·m.
Will 5SY6125-6CC drop into a panel specified for 5SY3132-6?
Both are 1-pole SENTRON MCBs on the same DIN-rail footprint (18 mm width unit). The difference is the tripping characteristic and current rating — verify the B-curve vs the original spec's curve and ampacity before substitution. Physical fit is the same.
What compliance documentation does 5SY6125-6CC carry?
Rated per EN 60898 at 6 kA and per UL 1077 / CSA C22.2 No.235 at 5 kA. Halogen-free and silicon-free. Standard Siemens compliance documentation (RoHS, REACH) applies.
MPN
5SY6125-6CC