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3VLseriesMCCBisoneofournewproductdevelopedandmanufacturedbyadoptinginternationaladvancedtechnology.Itissuppliedwithratedinsnlatingvoltage690VandusedforcircuitofA.C.50/60Hz,ratedoperatingvoltageA.C.415Vorbelow,ratedoperatingcurrentfrom16Ato250A.Itisdesignedforprotectionofelectriccircuit,motors,transformersandothereguipments.TheproductsconformstoGB14048.4,IEC60947-1,IEC60947-2&VDE0660standards. TripCharactristicOf Thethermodynamicreleaseofthebreakerhastheadvantagesofinversetime-delaywhiletheinstantaneousoperationasshownontable1(distributioncircuitbreaker)andtable2(motorprotectioncircuitbreaker). Table1 Ratecurrentofrelease (A) Thermodynamicrelease(ambienttemp+40°C) operaedcurrentofmagneticrelease(A) 1.05In(coldstate)inoperativetime(h) 1.30In(heatstate)operativetime(h) In≤63 ≥1 <1 10In±20% 63<In≤100 ≥2 <2 10In±20% 100<In≤630 ≥2 <2 5-10In±20% Table2 RatedCurrentof release(A) Operaedcurrentof magneticrelease(A) 1.0In(coldstate) inoperativetime(h) 1.20In(heatstate) operativetime(h) 1.50In(heatstate) operativetime(h) 7.2In(coldstate) operativetime(h) 12.5≤In≤400 ≥2 <2 ≤4min 2S<Tp≤10s 12In±20%