Rated current derates with ambient temperature: 1.6 A at 45 °C, 1.57 A at 50 °C, 1.53 A at 55 °C. If your panel runs hot, the actual continuous load limit drops — plan for that in the BOM. The 15 kA DC rating per IEC 60947-2 covers DC distribution applications, and the 5 kA UL 1077 / CSA C22.2 No. 235 rating qualifies it for North American supplementary protection use.
Siemens 5SY8315-8 SENTRON MCB, 3P D 1.6 A, 70 kA
MPN5SY8315-8
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Siemens SENTRON 5SY8315-8 miniature circuit breaker, 3-pole, D tripping characteristic, 1.6 A rated current, 70 kA breaking capacity at 400 V AC, 3 modular width units.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 3 |
| Pole configuration | 3P |
| Suitability for operation | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | D |
| Breaking capacity per IEC 60947-2 | 70 kA |
| Overvoltage category | III |
| IP protection class | IP20, with connected conductors |
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Rated current (AC) | 1.6 A |
| Rated voltage (AC, multi-phase) | 440 V |
| Parameter | Value |
|---|---|
| Modular width units | 3 |
| Mounting position | any |
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Terminal tightening torque, max. | 75 °C |
| Terminal tightening torque, min. | -40 °C |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Fastening method | Quick assembly system |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of surrounding temperature | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
Product details
MPN
5SY8315-8