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12
n
LB pLus - Type A
Type
252
254
256
258
404
408
634
Number of live conductors
2
4
6
8
4
8
4
Casing overall dimensions
LxH [mm]
35 x 46
35 x 46
35 x 46
35 x 46
35 x 46
35 x 46
35 x 46
Rated current
In [A]
25
25
25
25
40
40
63
Section of protective conductor
(1)
S
PE
[mm
2
]
91·45
91·45
91·45
91·45
91·45
91·45
91·45
Section of protective conductor
(1)
eq.Cu
S
PE
(=Cu) [mm
2
]
11
11
11
11
11
11
11
Operating voltage
Ue [V]
400
400
400
400
400
400
400
Insulation voltage
Ui [V]
690
690
690
690
690
690
690
Frequency
f [Hz]
5/6
5/6
5/6
5/6
5/6
5/6
5/6
Rated short-time current (0·1 s)
I
CW
[kArms]
2·2
2·2
2·2
2·2
2·7
2·7
2·7
Allowable peak current
Ipk [kA]
4·4
4·4
4·4
4·4
5·4
5·4
5·4
Thermal limit
I
2
t [A
2
s x 106]
0·484
0·484
0·484
0·484
0·729
0·729
0·729
20° C phase resistance
R
20
[m
Ω
/m]
5·278
5·278
5·278 5·278
5·278
2·891
2·891
2·639
Phase resistance at thermal conditions
R
t
[m
Ω
/m]
6·798
6·798
6·798
6·798
3·793
3·793
3·399
Phase reactance (50Hz)
X [m
Ω
/m]
1·114
1·279
1·279 1·114
1·279
0·770
0·770
0·637
Phase impedance
Z [m
Ω
/m]
5·394
5·431
5·431 5·394
5·431
2·992
2·992
2·715
Resistance of the protective conductor
1
R
PE’
[m
Ω
/m]
0·203
0·203
0·203
0·203
0·203
0·203
0·203
Reactance of the protective conductor (50Hz) X
PE
[m
Ω
/m]
1·100
1·100
1·000
1·000
1·100
1·000
1·000
Resistance of the fault loop
R
o
[m
Ω
/m]
5·482
5·482
5·482
5·482
3·094
3·094
2·843
Reactance of the fault loop (50Hz)
X
o
[m
Ω
/m]
2·214
2·379
2·279
2·279
1·870
1·770
1·637
Impedance of the fault loop
Z
o
[m
Ω
/m]
5·912
5·976
5·936
5·936
3·615
3·565
3·280
∆
V 10
-3
cos
j
= 0·70 [V/m/A]
4·81
3·99
3·99 3·89
3·99
2·23
2·23
1·99
∆
V 10
-3
cos
j
= 0·75 [V/m/A]
5·05
4·16
4·16 4·07
4·16
2·32
2·32
2·08
∆
V 10
-3
cos
j
= 0·80 [V/m/A]
5·29
4·32
4·32 4·24
4·32
2·40
2·40
2·16
Voltage drop with distributed load
∆
V 10
-3
cos
j
= 0·85 [V/m/A]
5·51
4·47
4·47 4·39
4·47
2·48
2·48
2·23
∆
V 10
-3
cos
j
= 0·90 [V/m/A]
5·72
4·60
4·60 4·53
4·60
2·54
2·54
2·30
∆
V 10
-3
cos
j
= 0·95 [V/m/A]
5·89
4·69
4·69 4·64
4·69
2·59
2·59
2·34
∆
V 10
-3
cos
j
= 1·00 [V/m/A]
5·89
4·57
4·57 4·57
4·57
2·50
2·50
2·29
Weight
p [kg/m]
1·00
1·04
1·25
1·28
1·19
1·56
1·56
Fire load
[kWh/m]
1·03
1·03
1·91
1·91
1·0
1·9
1·9
Protection index
IP
55
55
55
55
55
55
55
Degree of impact-resistance
IK
7
7
7
7
7
7
7
Joule effect losses at rated current
P [W/m]
12·7
12·7
12·7
12·7
18·2
18·2
40·5
Ambient temperature min / MAX
t [°C]
-5/+50
-5/+50
-5/+50
-5/+50
-5/+50
-5/+50
-5/+50
1 : metal casing
∆
V1F =
√
1 (2 R
20
cos
j
+ 2 X sen
φ
)
2
∆
V3F =
√
3 (R
20
cos
j
+ X sen
φ
)
2
Short circuit protection for Zucchini’s product ranges (In
≤
100A)
Zucchini busbar trunking systems with a rated current lower than or equal to 100A (LB PLUS-MS 63 and 100) are properly protected through an MCB
(Modular Circuit Breaker) with a rated current lower than or equal to that of the busbar. This protection is guaranteed up to the MCB breaking capacity
Product fully in compliance with IEC EN 60439-2
LB PLUS
busbar trunking systems
technical data