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**DC SPD Surge Protection Device DC500V 20KA-40KA**
**Solar System SPD, SPD Solar System, Solar SPD, DC Surge Protection Device**
The SUP4 series surge protection devices are specifically designed to safeguard photovoltaic (PV) power systems from lightning surges and voltage fluctuations. These units are installed in parallel on the DC networks and provide both common-mode and differential-mode protection. The SUP4 series is suitable for main operating voltages of up to 1000 Vdc.
It is recommended to install the SUP4 series at both ends of the DC power line—on the solar panel side and the inverter/converter side—especially when the wiring is long or exposed to external environments. The design includes high-energy PV modules with thermal disconnectors and failure indicators for enhanced safety.
The SUP4 series features plug-in modules, allowing for quick and easy maintenance without needing to disconnect the entire DC network. This makes it ideal for applications where reliability and accessibility are critical.
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### **Product Specifications**
| Feature | SUP2-PV | SUP4-PV |
|--------|---------|---------|
| **Pole Configuration** | 2 Pole | 3 Pole |
| **Class of Test** | II | II |
| **Max Uoc (V DC)** | 500 | 900 |
| **Uc (V DC)** | 500 | 1000 |
| **In (8/20μs) (kA)** | 20 | 20 |
| **Imax (8/20μs) (kA)** | 40 | 40 |
| **Up (kV)** | 2.0 | 3.8 |
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### **Additional Features**
- **Remote Control & Indication:**
- Indication window
- Plug-in module design
- Remote signal contact support
- **Remote Signal Contact Parameters:**
- Max working voltage: 250V AC / 30V DC
- Max working current: 1A (AC 250V / DC 30V)
- **Wiring & Installation:**
- Wiring capacity: 4–25 mm² (hard wire), 4–16 mm² (flexible wire)
- Stripping length: 10 mm
- Terminal screw size: M5
- Torque: 3.5 Nm (main circuit), 0.25 Nm (remote signal contact)
- **Protection Class:**
- IP40 (all profile), IP20 (connection port)
- **Installation Environment:**
- No significant vibration or shock
- Altitude: ≤ 2000 m
- Operating temperature: -3°C to +70°C
- Relative humidity: 30%–90%
- **Mounting:**
- H35-7.5/DIN35 steel mounting rail
- **Dimensions (mm):**
- W × H × L: 36 × 90 × 67.6 (SUP2-PV), 54 × 90 × 67.6 (SUP4-PV)
- Weight: 0.25 kg (SUP2-PV), 0.38 kg (SUP4-PV)
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### **Technical Data Summary**
| Parameter | Value |
|----------|-------|
| Nominal PV System Voltage | 600V, 1000V, 1200V |
| MCOV (UCPV) | 700V DC, 1170V DC, 1200V DC |
| Max Discharge Current (Imax) | 40KA, 40KA, 30KA |
| Voltage Protection Level (UP) | ≤ 2.5kV, ≤ 4.0kV, ≤ 4.5kV |
| Voltage Protection Level at 5KA (UP) | ≤ 2.0kV, ≤ 3.5kV, ≤ 4.0kV |
| Fuse Breaking Capacity | 30KA / 1000V DC, 30KA / 1200V DC |
| Technology | Short-circuit interruption (SCI) overcurrent protection |
| Operating Temperature Range | -40°C to +80°C |
| Nominal Discharge Current | 12.5KA |
| Response Time (ta) | <25ns |
| Operating State/Fault Indication | Green (Good) / Red (Replace) |
| Mounting | 35mm DIN Rail per EN 60715 |
| Degree of Protection | IP20 |
| Module Capacity | 3 modules DIN 43880 |
This product is ideal for use in solar energy systems, offering reliable protection against electrical surges and ensuring the longevity of your photovoltaic equipment. It's a trusted solution for both residential and commercial solar installations.