Siemens SENTRON 5SY6 series, miniature circuit breaker, 4-pole (3P+N), D tripping characteristic, 8 A rated current, 400 V AC, breaking capacity 6 kA per EN 60898 / 15 kA per IEC 60947-2.
| 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 | 8 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 |
The Siemens 5SY6608-8 is a SENTRON 5SY6 miniature circuit breaker with a D tripping characteristic, rated 8 A at 400 V AC across four poles (3P+N).
Combined top and bottom terminals simplify daisy-chaining in a distribution board.
Compliance documentation — RoHS, REACH, UL, IEC — is provided with the shipment; the UL 1077 / CSA C22.2 No. 235 rating is 5 kA at AC for North American installations.
6 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC; for UL 1077 / CSA C22.2 No. 235 it is rated 5 kA at AC.
Solid or stranded conductors from 0.75 to 35 mm².
Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.
Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SY7140-8CC carries a higher current rating and different breaking capacity — verify the load and fault-current requirements before substituting.