Normal working conditions
Protection pole: IP30
Pollution degree: III
Use category: Class B or Class A
Circuit breakers with rated operating voltages of 660V (690V) and below and undervoltage releases, primary coils for power transformers for category IV installation; auxiliary circuits and control circuits for installation category III.
ambient air temperature
The upper limit does not exceed +40 ° C, the lower limit is not lower than -5 ° C, and the average value of 24 h does not exceed +35 ° C
The relative humidity of the atmosphere does not exceed 50% when the ambient air is +40 ° C
Technical data and performance
|Rack rated current Inm(A)||Rated current In(A)|
|Racj rated current Inm(A)||2000||3200||4000||6300|
|Rated limit short-circuit breaking capacity Icu(kA) O-CO||400V||85||100||100||120|
|Rated short-circuit capabilityn × Icu(kA)/cosΦ||400V||176/0.2||220/0.2||220/0.2||264/0.2|
|Rated operating short-circuit breaking capacity Ics(kA) O-CO-CO||400V||65||65||65||80|
|Rated short-time withstand current Icw(kA) 1s,延时0.4s,o-CO||400V||65||65||65/80(MCR)||85/100(MCR)|
|Rack rated current(A)||Total number of operating ccles|
Rated operating vlotage
|Electric operating mechanism||Circuit breaker frame rated current||2000A||85VA||85VA||85W||85W|
|Category||Undervoltage delay release||Undervoltage instantaneous release|
|Trip unit action time||Delay 1.3.5S||Instantaneous|
|Trip unit operating voltage value||35%~70%Ue||Circuit breaker is reliably Disconnected|
|≤35%Ue||The circuit breaker cannot be closed|
|(85~100%)Ue||The circuit breaker can be reliably closed|
|In the 1/2 delay time, if the power supply voltage returns to 85% Ue||The circuit breaker does not open|
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