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Why DC Combiner Box Is Essential for PV Systems
If you're a solar system buyer, installer, or project manager, let's get straight to the point—you're here because you need a definitive answer: Does your solar system really need a DC combiner box? A
• Standard: IS0 8820-1, IS0 8820-8, JASO D622
• Rated voltage: DC500V
• Rated current: 10A, 12A, 16A, 20A, 25A, 30A, 35A, 40A, 50A
• Breaking capacity: 20kA
• Protection object: Provide safer and more reliable protection against overload and short-circuit current faults of electric vehicle lithium battery pack, Super-capacitor circuit , charging circuit, DC-DC converter and other devices.
• Applicable environment: Temperature from -35℃ to 85℃, humidity ≤90%.
• Material description: 95 alumina high strength ceramics and imported material fuse piece.
• Structure process: copper metal is riveted after welding process; The internal quartz sand is processed by solidification to prevent products from falling off in dynamic working conditions and prevent arc spraying which is caused by line faults.
| Product model | Rated current (A) | 1²t (A²s) | Breaking capacity | Power consumption (w) 0.5In |
Mounting bolts/torque | |
| Pre-arc | Fusing | |||||
| SEV10B500-10A | 10 | 350 | 420 | 5kA time constant (L/R): 2ms ± 0.5ms |
0.60 | Mounting bolt M8, recommended mounting torque 4.5N·m |
| SEV10B500-12A | 12 | 430 | 650 | 0.65 | ||
| SEV10B500-16A | 16 | 670 | 1280 | 0.75 | ||
| SEV10B500-20A | 20 | 800 | 1520 | 0.80 | ||
| SEV10B500-25A | 25 | 900 | 1820 | 1.00 | ||
| SEV10B500-30A | 30 | 1200 | 2100 | 1.20 | ||
| SEV10B500-35A | 35 | 1350 | 2600 | 1.50 | ||
| SEV10B500 40A | 40 | 1645 | 3250 | 2.10 | ||
| SEV10B500-50A | 50 | 2560 | 4896 | 3.20 | ||
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