Building Automation
Industrial Automation
Power Automation & Safety
Bangladesh Distributor
Question
The clear relay case has turned black. Is there a problem?
Answer
Carbon and contact dust generated by the organic gas that results from arc discharge during load switching accumulates on the inside of the case. The discoloration is not a problem.
If using an inductive load, a surge suppressor can be introduced as a countermeasure against discoloration caused by arc discharge.
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FAQ
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