Issue:
How does a thermal-magnetic trip unit work in a circuit breaker?
Product Line:
Circuit Breakers
Resolution:
Thermal magnetic trip units trip under short circuit conditions instantaneously, with no intentional delay. Below the instantaneous trip current, they have a delay established to protect conductors while allowing momentary current surges such as for motor starting and transformer inrush. In some cases, they have adjustable instantaneous trip current settings.
How does a thermal-magnetic trip unit work in a circuit breaker?
Product Line:
Circuit Breakers
Resolution:
Thermal magnetic trip units trip under short circuit conditions instantaneously, with no intentional delay. Below the instantaneous trip current, they have a delay established to protect conductors while allowing momentary current surges such as for motor starting and transformer inrush. In some cases, they have adjustable instantaneous trip current settings.
Released for: Schneider Electric USA
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