What this 25 A D-curve MCB means for your panel
The Siemens 5SY6625-8 is a 4-pole (3P+N) miniature circuit breaker from the SENTRON 5SY6 family, rated 25 A at 400 V AC with a D tripping characteristic.
Siemens 5SY6625-8 SENTRON MCB, 25 A, D-curve, 4-pole, 400 V
MPN5SY6625-8
Siemens SENTRON 5SY6 series, miniature circuit breaker (MCB), 4-pole 3P+N, 25 A, D tripping characteristic, 400 V AC, breaking capacity 6 kA per EN 60898 / 15 kA per IEC 60947-2.
$510.43Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type / order code | 5SY6 |
| Brand name | SENTRON |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Pole configuration | 3P+N |
| Rated current (In), AC | 400 V |
| Rated current (In), AC | 25 A |
| Rated voltage, AC (multi-phase) | 440 V |
| Rated voltage, AC (single-phase) | 440 V |
| Rated voltage, DC (max.) | 72 V |
| Voltage type | AC |
| Rated frequency | 50/60 Hz |
| Parameter | Value |
|---|---|
| Tripping characteristic (trip curve) | D |
| Rated breaking capacity (Icn), per EN 60898 | 6 kA |
| Rated breaking capacity, per IEC 60947-2 | 15 kA |
| Breaking capacity, AC (UL 1077 / CSA C22.2 No.235) | 5 kA |
| Overvoltage category | III |
| Degree of protection (IP) | IP20, with connected conductors |
| Neutral conductor switching | Yes |
| 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 |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of ambient temperature (derating) | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
| Parameter | Value |
|---|---|
| Mechanical service life (switching cycles, typ.) | 10 000 |
Product details
Frequently asked questions
Where can I buy 5SY6625-8 and what is the lead time?
This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time; no stock or lead-time figure is published here.
What is the breaking capacity of 5SY6625-8?
6 kA per EN 60898, 15 kA per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235. The IEC 60947-2 rating governs panel SCCR in most industrial switchgear.
Will 5SY6625-8 drop into a panel specified around 5SY4140-7 without rewiring?
Both are 4-pole SENTRON MCBs with the same DIN-rail footprint and 72 mm width. The 5SY6625-8 is a 25 A D-curve; the 5SY4140-7 is a lower-current variant. If the panel bus and load circuit are rated for 25 A and need a D-curve, the swap is direct — same terminal range (0.75–35 mm²) and same mounting. Check the load's inrush characteristic: the D-curve on the 5SY6625-8 is appropriate for motor or transformer loads, while the 5SY4140-7 may carry a different curve.
MPN
5SY6625-8