| Parameter | Specification |
|---|---|
| Product Series | SUNTREE SL7N-63 |
| Product Type | DC Miniature Circuit Breaker (DC MCB) |
| Rated Current | 6A – 63A |
| Current Ratings | 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Rated Insulation Voltage (Ui) | 1250V |
| Rated Impulse Withstand Voltage (Uimp) | 6kV |
| Breaking Capacity | 6kA |
| Trip Curve | B / C |
| Overvoltage Category | III |
| Pollution Degree | 3 |
| Protection Degree | IP40 (Terminal IP20) |
| Mechanical Life | 8,500 Operations |
| Electrical Life | Up to 1,500 Operations |
| Operating Temperature | -30°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | ≤95% |
| Maximum Installation Altitude | 2,000 m |
| Standards | IEC 60947-2 / GB/T 14048.2 |
| Pole Configuration | Rated Service Voltage |
|---|---|
| 1P | 15V, 60V, 100V, 180V, 250V DC |
| 2P | 125V, 375V, 550V, 600V, 800V DC |
| 3P | 750V, 800V DC |
| 4P | 800V, 1000V, 1200V DC |
| Model Options |
|---|
| 6A |
| 10A |
| 16A |
| 20A |
| 25A |
| 32A |
| 40A |
| 50A |
| 63A |
| Configuration | Breaking Capacity |
|---|---|
| Standard Models | Ics = Icu = 6kA |
| 2P 800V / 4P 1200V | Ics = Icu = 2kA |
| Parameter | Specification |
|---|---|
| Mechanical Life | 8,500 Operations |
| Electrical Life | 1,500 Operations (<125V DC 1P / <250V DC 2P) |
| Electrical Life (Other Voltages) | 1,000 Operations |
| Heat & Humidity Resistance | Class Db |
| Shock Resistance | IEC 60068-2-6 |
| Mechanical Shock | IEC 60068-2-27 |
| Weight | 0.12 kg per Pole |
The SL7N-63 series supports a complete range of auxiliary devices for enhanced monitoring and control.
| Accessory | Description |
|---|---|
| OF | Auxiliary Contact |
| SD | Alarm Contact |
| MX | Shunt Trip |
| MN | Under Voltage Release |
| MX + OF | Combined Shunt Trip & Auxiliary Contact |
Recommended power supply: ≥75W
Depending on the pole configuration, the SUNTREE SL7N-63 DC Circuit Breaker supports rated operating voltages from 15V DC up to 1200V DC. This wide voltage range makes it suitable for residential, commercial, industrial, and utility-scale photovoltaic systems.
The SL7N-63 series is available in 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A current ratings, allowing it to meet the protection requirements of various DC electrical systems.
Yes. The SL7N-63 is specifically designed for solar photovoltaic (PV) systems, battery energy storage systems (ESS), combiner boxes, hybrid inverters, and DC distribution panels. It provides reliable overload and short-circuit protection in demanding solar applications.
The SL7N-63 offers a rated short-circuit breaking capacity of up to 6kA. For the 2P 800V DC and 4P 1200V DC versions, the rated breaking capacity is 2kA, ensuring safe interruption of fault currents in high-voltage DC systems.
No. The SL7N-63 features a non-polarized design, allowing installation without positive or negative polarity restrictions. This simplifies wiring, reduces installation time, and provides greater flexibility for installers.
2 reviews for SUNTREE SL7N-63 DC Circuit Breaker (550–1000V DC)
Alana –
Can this DC circuit breaker be used for photovoltaic applications, and what DC voltage range does it support???
Leighton –
The compact design and DC-specific application make this look like a convenient choice for PV systems.