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MCCB
3VL Mould Case Circuit Breaker (MCCB)
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Application
3VL series MCCB is one of our new product developed and manufactured by adopting international advanced technology.It is supplied with rated insnlating voltage 690V and used for circuit of A.C.50/60Hz,rated operating voltage A.C. 415V or below,rated operating current from 16A to 250A.It is designed for protection of electric circuit,motors,transformers and other eguipments.The products conforms to GB14048.4,IEC60947-1,IEC60947-2 & VDE0660 standards.
Trip Charactristic Of
The thermodynamic release of the breaker has the advantages of inverse time-delay while the instantaneous operation as shown on table 1 (distribution circuit breaker) and table 2 (motor protection circuit breaker).
Table 1
Rate current of release
(A)
Thermodynamic release(ambient temp+40℃)
operaed current of magnetic release(A)
1.05In(cold state )inoperative time(h) 1.30In(heat state) operative time(h)
In≤63 ≥1 <1 10In±20%
63<In≤100 ≥2 <2 10In±20%
100<In≤630 ≥2 <2 5-10In±20%
Table 2
Rated Current of
release(A)
Operaed current of
magnetic release(A)
1.0In(cold state)
inoperative time(h)
1.20In(heat state)
operative time(h)
1.50In(heat state)
operative time(h)
7.2In(cold state)
operative time(h)
12.5≤In≤400 ≥2 <2 ≤4min 2S<Tp≤10s 12In±20%
Main Technical Specifications
Type Rated Current
(A)
Pole
number
Ultimate Short Circuit
Breaking capacity(KA)
Servies Short Circuit
Breaking Capacity(KA)
Operation
performance
ON OFF
3VL-160D 16,20,25,32,
40,50,63,80,
100,125,160
Three Pole,
four pole
25 25 4500 10000
3VL-160N 30 30
3VL-160H 70 70
3VL-160L 100 100
3VL-250N 200,225,250 35 35 4000 8000
3VL-250H 70 70
3VL-250L 100 100
Rated InsulationVoltage:690V
Rated Opreating Voltage:380/415V
Arcing-Over Distance:100mm
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