Nsfs160 Hot -

Electrical components like the Schneider Electric NSX160H or similar 160A switch-fuses have specific thermal limits. Common causes for overheating include:

Why Would an NSFS160 Run Hot? (Troubleshooting Guide)

Result:

Aluminum bond wires inside the module expand and contract at different rates from the silicon chip. After thousands of thermal cycles (e.g., daily startup/shutdown), wires crack or lift. Intermittent open circuit or increased V_f. nsfs160 hot