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NEC 2026 Panel Level Rapid Shutdown Install Guide | SUNTREE
NEC 2026 maintains and refines the module‑level rapid shutdown requirement: conductors outside the array boundary must drop to 30 V or less within 30 seconds, while inside the boundary,
• Suitable for large solar photovoltaic power plants.
•This circuit breaker has overload long delay and short-circuit instantaneous protection functions, which are used to distribute electrical energy and protect the circuit and power equipment from overload, short circuit and other fault hazards.
•High current, can be used to protect batteries.
| model | SM8-630HPV /4P 1500V |
| Product name | PV DC MCCB |
| Rated operational voltage | DC1500V |
| Nominal insulation voltage | 1500V |
| Rated impulse voltage | 12kV |
| Pole | 4 |
| Type of release | Thermal magnetic type (thermal magnetic not adjustable) |
| Executive standard | GB14048.2，IEC/EN 60947-2 |
| Use category | A(PV-1) |
| Case grade current | 630A |
| Rated operational current | 400/500/630A |
| Breaking capacity | H |
| Rated ultimate short-circuit breaking capacity | Ue1500v 30kA Ue1500v 30kA |
| Operation breaking capacity | Ue1500v 30kA Ue1500v 30kA |
| Long delay protection | 1In |
| Instantaneous protection | 6In（Min1000A） |
| Mechanical life | 10000times |
| Electrical life | 2000times |
| Dimensions | Type H: 310×240×155mm Type G: 350×240×155mm |
| Installation methods | Fixed |
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