Product Name: 4p Circuit Breaker (TUV Certification) , Solar Photovoltaic DC Circuit Breaker with Competitive Price (JB-63) Model NO.: JB-4P Certification: CE, UL, CCC Function: Conventional Circuit Breaker, Overcurrent Protection Type: Circuit Breaker Poles Number: 4 Structure: MCB Installation: Fixed Arc-extinguishing Medium: Magnetic Speed: Normal Type Circuit Breaker Operation: Manual Type Breaking Capacity: Low Voltage Circuit Breakers Mini Circuit Breaker Rated Voltage: 1000 V Mini Circuit Breaker Handle Color: Grey Brand: Langir Is_Customed: Yes Product Name: Mini Circuit Breaker Trademark: Langir Transport Package: 3 PCS / Box Specification: CE, IEC Origin: Wenzhou HS Code: 853620000 Product Description The JB is a DC circuit breaker dedicated to multi string photovoltaic installations.Storage -40 to 85 degree- This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits (see application diagram).- Combined with a switch , the JB will be installed in a string PV protection enclosure at the end of each string of photovoltaic modules.- It can be locked (by a padlocking device) in OFF position as a safety measure for removal of the PV inverter.- Since a fault current can flow in the reverse direction to the operating current, the JB can detect and protect against any bidirectional current.- To ensure the safety of the installation, it is necessary, depending on the various types of application, to combine the JB with:a residual current device at the AC enda fault passage detector (insulation monitoring device) at the DC endan earth protection circuit breaker at the DC end- In all cases, fast action on site will be required to clear the fault (protection not ensured in the event of a double fault).- JB is not polarity sensitive: (+) and (-) wires can inversed without any risk.- The JB is: delivered with three inter-pole barrier to provide increased isolation distance between two adjacent connectors.Main characteristicsOperating Voltage (Ue)1P=250 V DC, 2P=500 V DC3P=750 V DC, 4P=1000 V DCRated insulation voltage (Ui)1,000 VDCBreaking capacity (Icu)10 kAImpulse voltage (Uimp)4 kAElectrical connectionBy the bottom for In and OutNumber of poles1P, 2P, 3P, 4PStandardsIEC 60947-2EN 60947-2Rated service breaking capacity (Ics)100%of the IcuEndurance (O-C)Electrical1,500 cycles (where L/R=2 ms)Mechanical20, 000 cyclesMechanical20, 000 cyclesDegree of pollution2CategoryA (no delay in accordance with IEC / EN 60947-2 standards)Degree of protection(IEC 60529)IP40TropicalisationRelative humidity: 95%at 55 degreein accordance withIEC 60068-2 and GB 14048.2 standardsTemperatureOperating-25to 70 degreeStorage-40to 85 degree