Common Issues with Solar PV Isolator Switches and How to Fix Them

Solar isolator switches are robust, but over time, issues may occur due to environmental conditions or installation faults. Here are some common problems and how to address them:

1. Overheating

Caused by poor internal contact or oversized current. Ensure the current rating matches your array output and replace faulty switches.

2. Loose Terminals

Check and tighten terminal screws regularly to avoid sparking and energy loss.

3. Water Ingress

Improper sealing leads to moisture entry. Replace cracked enclosures and ensure proper gaskets are in place.

4. Corrosion

In humid or coastal areas, corrosion of contacts may occur. Use corrosion-resistant components and inspect periodically.

5. Switch Failure

Old or defective switches may stop functioning. Always replace with certified, high-quality components.

Routine inspection and maintenance are essential to ensure uninterrupted operation of your solar system.