ZN12 VCB

KEY WORDS:High pressure vacuum switch

Classification:

DETAILS

Description:
12kv vacuum circuit breaker for indoor
1.Rated voltage 12KV 
2.Rated current 630/1250/1600A 
3.short-circuit breaking current
Technical data:

No. Item Unit Value
1 Rated voltage  KV 12
2 Rated lighting impulse withstand voltage KV Inter phase or to ground 75, fructure 80
3 Rated short-time power frequency withstand voltage KV Inter phase or to ground 42, fructure 48
4 Rated short-circuit breaking current KA 20,25 31.5 40
5 Rated current         A 630/1250/1600 /2000/2500/3150
6 Rated thermo stability current(valid) KA 25 31.5 40
7 Rated dynamic stability current(peak)  KA 63 80 100
8 Rated short-circuit making current(peak)                            KA 63 80 100
9 Rated operations of short-circuit breaking current Times 50(40kA is 30)
10 Rated working current of over current and tripping coil A 5
11 Rated operating sequence                           0-0.3s-CO-180s -CO
12 Rated current of auxiliarate switch                                    A AC10,DC5
13 Rated voltage of energy saving release V AC.DC220   AC.DC110
14 Closing time                              Times ≤75
15 Opening time   ≤60(40)
16 Power of energy saving motor W 275
17 Energy saving time S ≤15
18 Mechanical life Times 20000
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