DC Isolator Switch
AC Isolator Switch
The main difference between Solar AC and DC isolators is the type of electrical current they are designed to handle. Solar AC isolators are designed to isolate an AC electrical system, whereas Solar DC isolators are designed to isolate a DC electrical system.
In a solar PV system, the AC isolator is typically installed on the AC side of the inverter, while the DC isolator is installed on the DC side of the inverter, between the PV panels and the inverter.
Here are some other differences between Solar AC and DC isolators:
Voltage rating: Solar AC isolators typically have a voltage rating of 240V AC, while Solar DC isolators can have voltage ratings of up to 1000V DC or higher.
Current rating: Solar AC isolators are typically rated for lower current levels than Solar DC isolators. For example, a Solar AC isolator may be rated for 20A, while a Solar DC isolator may be rated for 100A or more.
Construction: Solar AC isolators typically have simpler construction than Solar DC isolators, as AC systems are generally less complex than DC systems. Solar DC isolators often have additional safety features to protect against high voltages and currents, such as lockable handles and visible isolating contacts.
Installation: Solar AC isolators are often easier to install than Solar DC isolators, as they do not require special precautions to handle DC voltage levels. However, both types of isolators should be installed by qualified personnel according to the manufacturer’s instructions.
Overall, the choice between a Solar AC and DC isolator will depend on the specific requirements of your solar PV system. It is important to choose a high-quality, reliable isolator that is suitable for your system’s voltage and current ratings, and that meets all relevant safety standards.