15. Monitoring, Status & Maintenance · 第 5/6 頁
Lifecycle Replacement Strategy
Plan replacements before failure clusters appear.

Age + stress
Sites with high surge counters may replace on condition; quieter sites may replace on age/inspection.
Standardization
Standardizing Protec DIN-rail families simplifies spares and training.
Documentation
Log replacement dates per board—future engineers will thank you.
