Here is the hard truth: A lightning strike 100 meters away, or switching a heavy inductive load inside your plant, can generate a 6kV surge. That surge doesn't care about your safety rating. It will weld contacts, fry logic, and degrade sensitive semiconductors in your safety relays and PLCs.
Bridging the Gap: Why your PL (Performance Level) doesn't matter if your SPD (Surge Protection) fails. pl spd tool
Don't let a $50 surge destroy a $50,000 safety system. Here is the hard truth: A lightning strike
But there is a silent assassin that destroys all that hard work: pl spd tool
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