1. The load current is greater than the rated switching current of the SSR, which will permanently short-circuit the relay. At this time, an SSR with a larger rated current should be used.
2. Under the ambient temperature where the relay is located, poor heat dissipation for the current it bears will damage the output semiconductor devices. At this time, a larger or more effective heat sink should be used. .
3. Line voltage transient bow | SSR output is partially punched through. At this time, an SSR with a higher rated voltage should be used or an additional transient protection circuit should be provided.
4. The line voltage used is higher than the rated voltage of the SSR.
