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Choosing the right DC circuit breaker
When purchasing a DC MCB , there are three core points: matching the voltage and current of the system, ensuring that protection does not "fail" under extreme operating conditions, and controlling the full...
• Suitable for large solar photovoltaic power plants
• This circuit breaker has overload long delay and short-circuit instantaneous protection functions, which are used to distributeelectrical energy and protect the circuit and power equipment from overload, short circuit and other fault hazards
• High current, can be used to protect batteries
| Product Model | SM8-250HPV /3P 1500V | SM8-630HPV /4P 1500V |
| Product name | PV DC MCCB | PV DC MCCB |
| Rated service voltage Ue | DC1250V DC1500V | DC1500V |
| Rated insulation voltage Ui | 1500V | 1500V |
| Rated impulse withstand voltage Uimp | 12kV | 12kV |
| Numbers of poles | 3 | 4 |
| Trip type | Thermal magnetic (thermal magnetic non adjustable)TMD fixed | |
| Manufacturing standards | GB14048.2,IEC/EN 60947-2 | |
| Use category | A(PV-1) | |
| Current shell frame In | 250A | 630A |
| Rated service current le | 100/125/160/200/225/250A | 400/500/630A |
| Breaking type | H | H |
| Ultimate short circuit breaking capacity lcu | Ue1500v 15kA Ue1250v 20kA | Ue1500v 30kA Ue1500v 30kA |
| Rated service short-circuit breaking capacity lcs | Ue1500v 15kA Ue1250v 20kA | Ue1500v 30kA Ue1500v 30kA |
| Current setting lr | 1In | |
| Instantaneous short circuit protection LiMechanical life | 6In ( Min1000A ) | |
| Mechanical life | 10000Times | |
| Electrical life | 2000Times | |
| Overall dimensions L×W×H | 135×200×135mm | Type H:310×240×155mm Type G:350×240×155mm |
| lnstallation mode | Fixed | |
| Ingress protection | Wiring terminal: lP20/all sides:IP40 | |
| Relative humidity | Not more than 95% at +50°C | |
| With wiring polarity requirements or not | NO | |
| Class of pollution | Level 3 | |
| Service temperature | -40℃ -+75℃ | |
| Operation indications | ON/OFF indication | |
| Whether the trip is adjustable | NO | |
| Electrical accessories | Optional: shunt/auxiliary/alarm (note: only one set can be installed on the left and right sides of auxiliary,alarm and shunt) 2P only on the left | |
| lsolating function | Yes | |
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