Siemens SENTRON 5SY6 series, 4-pole D-curve miniature circuit breaker, 40 A rated, 400 V AC, 6 kA (EN 60898) / 10 kA (IEC 60947-2), IP20.
| Parameter | Value |
|---|---|
| Type / order code | 5SY6 |
| Brand name | SENTRON |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Pole configuration | 4P |
| Rated current (In), AC | 400 V |
| Rated current (In), AC | 40 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 | 10 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 | No |
| 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 |
| Tightening torque, max. | 31 lbf·in |
| Tightening torque, min. | 22 lbf·in |
| 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 4-pole body takes 4 width units (72 mm wide,), so plan for 72 mm of rail space per breaker. Mounting position is any, which helps when the panel layout is tight and you need to rotate the breaker for wire routing.
Rated per EN 60898 (6 kA) and IEC 60947-2 (10 kA) — the two standards cover residential/commercial and industrial applications respectively. Also carries UL 1077 and CSA C22.2 No. 235 ratings at 5 kA for North American supplementary protection.
The 5SY6440-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
The 5SY6613-8 is a 4-pole D-curve MCB from the same SENTRON 5SY6 family, but it is rated 13 A instead of 40 A. The 5SY6440-8 is the 40 A variant; the 5SY6602-8 is a 2 A variant. No direct 40 A second-source exists within the 5SY6 series — the 5SY6440-8 is the only 40 A D-curve 4-pole in the family.
The overall depth is 76 mm; the installation depth (behind the panel face) is 70 mm.
The width is 72 mm, which corresponds to 4 standard width units on a DIN rail.
Yes — both are 4-pole D-curve MCBs in the same 5SY6 mechanical footprint (72 mm wide, same depth and mounting). The only difference is the current rating: 40 A vs 13 A. No rewiring of the busbar or DIN rail is needed, but verify the load current and upstream protection coordination for the higher rating.
The breaker carries ratings per EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free. Standard Siemens documentation includes a CE declaration, RoHS/REACH compliance statements, and the datasheet with coordination curves.