Building Automation
Industrial Automation
Power Automation & Safety
Bangladesh Distributor
Question
What happens when the rated carry current is exceeded at the switching section (contact section)?
Answer
The symptoms depend on whether the contacts have power supplied to them only or they are switched as well.
1.Power Supply Only
Generated heat may cause deterioration of the contacts and/or conductor insulation, and reduce the springiness (reset force) of the contact springs.
2.Switching
Contact transfer, welded contacts, OFF faults, abnormal consumption, and increase of contact resistance may occur.
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