SNA1 series air circuit breaker ACB

Detailed ImagesProduct Description
1. General
1.1 Application scope
SNA1 series air circuit breaker is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current up to 6300A. It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single-phase earthing fault.
With intelligentized and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines (for 690V) and modern high-buildings, especially for the distribution system of intelligentized building.
1.2 Standard: IEC/EN 60947-2.
2.Operating conditions
2.1Temperature condition:
-5~40; the average value within 24h
shall not exceed +35(special situation excluded);
2.2Altitude: 2000m;
2.3Pollution grade: Grade 3;
2.4Air conditions:
At mounting site, relative humidity not exceed 50%
at the max temperature of +40 , higher relative humidity is allowable under lower temperature, RH could be 90% at +20 , special measures should be taken to occurrence of dews;
2.5Note: Without the intelligent controller,
the breaker functions as a switch-disconnector.
3. Technical specifications
Breaker frame size rated current: 1000,2000,3200,4000,6300A
Rated voltage Ue:AC400V,AC690V
Rated current In:200A-6300(3P)A
Rated insulation voltage Ui:800V,1000V
Rated impact withstand voltage Uimp:8kV,12kV
Overcurrent trip type: electronic
Breaking capacity Ics:35kA-80kA,Icu:50kA-120kA(AC400V) ; Ics:25kA-70kA,Icu:30kA-80kA(AC690V)
Rated short-time withstand current: Icw=Ics/1s
Use category: B Type
Poles number: 3P, 4P
Installation method: Drawout type, Fixed type
Certification: CCC,CE4.Type designationCompany Information
Trihero Group is a professional manufacturer from China,circuit breakers are one of our main products,including MCB,MCCB,ACB,RCCB,RCBO,we have exported to more than 50 countries,and build long term business relationship with many big distributors,we are also OEM provider for world famous brand,such as LG,etc.CertificationsFAQ