The IP66 Mini Circuit Breaker BB1F-63, is designed for a voltage range from 300V (1P) to 1200V (4P). With a maximum current rating of 63A, it's a robust choice for your electrical needs. Notably, when your solar PV system operates at voltages exceeding 600V, it's essential to incorporate overvoltage protection, which can be efficiently provided by this DC breaker or a DC fuse.