PV Protection Products-PV MCB

The rated working voltage of MG1-63 small DC circuit breaker can be as high as DC1200V. This circuit breaker adopts a special arc extinguishing and current limiting system, which can quickly disconnect the fault current of the DC distribution system, protect important components in the solar power generation system, and protect the photovoltaic module from the harm of high DC reverse current and AC feedback current caused by inverter faults, ensuring the reliable operation of the solar photovoltaic power generation system.



  • Overcurrent Protection: They protect circuits from excessive currents which can cause overheating and potential fires.
  • Short Circuit Protection: MCBs quickly interrupt the circuit if a short circuit occurs, preventing damage to equipment and hazards.
  • Isolation of Circuits: They enable safe isolation of parts of the electrical system for maintenance or during emergencies.
  • Circuit Control: MCBs can be used as a manual switch to control the flow of electricity in a circuit.
  • Safety Enhancement: They provide a higher level of safety for both the electrical system and the users interacting with it.

Application scenarios

For elevations below 2000 meters and above 2000 meters, capacity reduction is required. For other special requirements, please contact the manufacturer;

The ambient air temperature ranges from -25 ℃ to+40 ℃, and the average temperature within 24 hours does not exceed+35 ℃; When the ambient air temperature is above+40 ℃ or below -25 ℃, please contact the manufacturer;

The product should be installed in the distribution box in a place with waterproof measures;

Name MG-63
Number of poles 1P 2P 3P 4P
Rated voltage (V) DC250V DC500V DC750V DC1000V
Rated current In (A) 1,2,3,4,6,10,16,20,25,32,40,50,63
Rated short-circuit capacity icn (kA) (T=4ms) 6(DC250V) 6(DC500V) 6(DC750V) 6(DC1000V)
Instantaneous release type Distribution protection
Rated impulse withstand voltage Uimp (kV) 4
Rated insulation voltage Ui (V) 1200
Lifetime (times) Carrying 10000 times, not carrying 20000 times
Usage environment Environmental temperature; -25℃ to+40℃
Can come with attachments Auxiliary, alarm, and shunt release device
Maximum wiring capacity 25mm²
Certificate Obtaining CCC, CB, TUV certification certificates
Load Standard IEC 6094-1,GB 14048-2,IEC 60898-2,GB 14048-1