1. DC photovoltaic circuit breaker

DC photovoltaic circuit breakers are key components used to protect DC circuits in photovoltaic power generation systems. They are mainly used to prevent photovoltaic battery group faults such as short circuits and overcurrent. They are mainly of the following types:

1. Fuse-type photovoltaic DC circuit breaker: This type uses a fuse as the switching element and is widely used in large photovoltaic power plants. It is characterized by its high voltage and current resistance and high fault tolerance.

2. Breaker-type photovoltaic DC circuit breaker: This type uses a circuit breaker as a switching element and is primarily suitable for small photovoltaic power generation systems. It features fast-breaking performance and stable power-off effects.

3. Isolating switch type photovoltaic DC circuit breaker: It uses an isolating switch as the switching element, has the advantages of good isolation performance, small space occupation, and high cost performance. It is suitable for photovoltaic power stations with multiple independent circuits.

2. AC photovoltaic circuit breaker

AC photovoltaic circuit breakers are key components used to protect AC circuits in photovoltaic power generation systems. They are mainly used to prevent failures of photovoltaic inverters, transformers and other equipment. They mainly include the following types:

1. Circuit breaker type photovoltaic AC circuit breaker: uses circuit breaker as the main switching element, which has the advantages of good fast-breaking performance, stable power-off effect, and strong fault tolerance.

2. Switch-type photovoltaic AC circuit breaker: uses a switch as the main switching element, has the advantages of small size and high cost performance, and is suitable for small photovoltaic power stations.

In general, photovoltaic circuit breakers are widely used in photovoltaic power generation systems and can effectively protect the safe and stable operation of photovoltaic power plants. However, when purchasing a photovoltaic circuit breaker, it is necessary to select the appropriate type and specification based on actual needs to ensure the normal operation and safe operation of the system.