How to Choose the Best Solar Isolator Switch for Your PV System

Not all solar isolator switches are created equal. When purchasing for your photovoltaic system, it’s vital to evaluate performance specifications, safety ratings, and durability. Look for models certified to IEC 60947-3 standards, which ensure reliable performance in DC circuits.

Important specifications include voltage rating, current capacity, breaking capacity, and ingress protection (IP) level. For outdoor applications, an IP66-rated enclosure is ideal for dust and water resistance.

Also consider the switch type (single-pole or multi-pole), mounting options (wall-mounted or panel-mounted), and whether it includes arc suppression features. Consult your installer or engineer if unsure.

Ultimately, choosing the right isolator improves operational safety, extends system life, and reduces the risk of power disruption.