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SYB5‑125P is high‑current AC/DC universal miniature circuit breaker, specially designed for photovoltaic and energy‑storage systems. It supports both AC and DC circuits, frame current up to 125A, available in 1P/2P/3P/4P poles, rated current range 50‑125A. It provides reliable overload and short‑circuit protection for solar PV combiner boxes, inverter input‑output and battery DC distribution circuits. Adopts flame‑retardant housing material, compact DIN35 rail mounting, tripping characteristics B/C/D curve options. Widely used for residential rooftop PV, C&I photovoltaic projects and energy‑storage power stations.
‑ AC‑DC dual‑use: Suitable for AC and DC photovoltaic circuits, DC voltage up to 1500V. ‑ Large‑current frame: Max frame current 125A, rated current covers 50A‑125A, for high‑power PV systems. ‑ Multiple tripping curves B / C / D, match different load conditions. ‑ High breaking capacity: 15kA AC, 6kA DC for short‑circuit protection. ‑ Compact size, short arcing design, flame‑retardant housing material. ‑ Wide wiring capacity 2.5‑50mm², meet large‑current cable wiring requirement. ‑ Wide operating temperature:‑30℃ ~ +70℃, adapt outdoor PV working environment. ‑ Standard DIN35 rail installation, rich optional accessories.
Basic Specs
| Parameters | SYB5‑125P |
|---|---|
| Model | SYB5‑125P |
| Number of poles | 1P / 2P / 3P / 4P |
| Rated working voltage | 1P:AC230V DC500V；2P:AC400V DC1000V；3P/4P:AC400V DC1500V |
| Maximum frame current | 125A |
| Rated current In | 50A,63A,80A,100A,125A |
| Rated insulation voltage Ui | AC690V / DC1500V |
| Rated impulse withstand voltage Uimp | 8kV |
| Tripping characteristics | B / C / D |
| Tripping type | Thermal‑magnetic |
| Operational breaking capacity Ics | 10kA(AC) / 6kA(DC) |
| Ultimate breaking capacity Icu | 15kA(AC) / 6kA(DC) |
| Mechanical life | ≥10000 times |
| Wiring capacity | 2.5‑50mm² |
| Wiring torque | 3.0Nm |
| Operating ambient temperature | ‑30℃ ~ +70℃ |
| Installation Method | DIN35 rail |
| Altitude | ≤2000m |
| Protection Level | IP40(Terminal IP20) |
‑ Large‑current protection for 1000V
‑1500V DC photovoltaic combiner boxes
‑Commercial & industrial high
‑power solar power station
‑ Energy‑storage cabinet AC
‑DC side over
‑current & short
‑circuit protection
‑ Rooftop large power PV system, inverter input‑output circuit protection
