Applications
3.2 Line protection applications of 3VA molded case circuit breakers
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
111
Thermal-magnetic trip units
Derating
Thermal-magnetic trip units employ a temperature-dependent bimetal to provide overload
protection. The setting values are calibrated at an ambient temperature of +50 °C.
Compensation factors must be applied for ambient temperatures other than +50 °C.
You will find more information and derating factors in chapter Derating and temperature
compensation (Page 628).
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