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MS
double sided busbar
technical data
27
Live conductors
No.
4
4
4
Casing overal dimension
A x B (mm)
39 x 97
39 x 97
39 x 97
Rated current
I
n
(A)
63
100
160
Cross-section of conductors (3P + N)
S (mm
2
)
26
26
39
Cross-section of protective conductor eq. Cu
S
PE
(mm
2
)
21
21
21
Operational voltage
U
e
(V)
400
400
400
Insulation voltage
U
i
(V)
750
750
750
Rated frequency
f (Hz)
50/60
50/60
50/60
Rated short-time current (0·1 s)
I
cw
(kA)rms
2·3
4·5
5·5
Peak current
Ipk (kA)
10
10
10
Maximum thermal limit
I
2
† (A
2
s x 106)
5·29
20·25
30·25
Phase resistance
R
20
(m
Ω
/m)
1·250
0·658
0·478
Phase reactance (50Hz)
X (m
Ω
/m)
0·366
0·366
0·247
Phase impedance
Z (m
Ω
/m)
1·302
0·753
0·538
Resistance of the protective bar
R
PE
(m
Ω
/m)
0·857
0·857
0·857
Reactance of the protective bar (50Hz)
X
PE
(m
Ω
/m)
0·090
0·090
0·102
Resistance of the fault loop
R
o
(m
Ω
/m)
1·85
1·26
1·08
Reactance of the fault loop (50Hz)
X
o
(m
Ω
/m)
0·456
0·456
0·349
Impedance of the fault loop
Z
o
(m
Ω
/m)
1·91
1·34
1·13
∆
V (V/m/A)10-
3
cos
ϕ
= 0·70
0·98
0·63
0·44
∆∆
V (V/m/A)10-
3
cos
ϕ
= 0·75
1·02
0·64
0·45
∆∆
V (V/m/A)10-
3
cos
ϕ
= 0·80
1·06
0·65
0·46
∆∆
V (V/m/A)10-
3
cos
ϕ
= 0·85
1·09
0·65
0·46
∆∆
V (V/m/A)10-
3
cos
ϕ
= 0·90
1·11
0·65
0·47
∆∆
V (V/m/A)10-
3
cos
ϕ
= 0·95
1·13
0·64
0·46
∆∆
V (V/m/A)10-
3
cos
ϕ
= 1·00
1·08
0·57
0·41
Straight length weight
p (kg/m)
2·0
2·6
2·8
Fire load
(kWh/m)
1·64
1·64
1·64
Protection degree
IP
40/55
40/55
40/55
Losses for the Joule effect at full load
P (W/m)
14·9
19·7
36·7
Min./max. ambient temperature
† (°C)
-5/+50
-5/+50
-5/+50
Voltage drop with distributed load (k)
63
100
160
Rating (A)
(R
20
cos
ϕ
+ X sen
ϕ
)
∆
V
3F
= 3
2
√
(2 R
20
cos
ϕ
+2 X sen
ϕ
)
∆
V
1F
= 1
2
Suitable for the following climates :
Constant humid climate (DIN IEC 68 and 2- 3)
Cyclical humid climate (DIN IEC 68 and 2- 30)
Complies to :
IEC 439-1 and 2, BS EN 60439 part 1 and 2,
DIN VDE 0660 part 500 and 502
Short circuit protection for Zucchini product ranges (In
≤
100 A)
Zucchini busbar systems with a nominal current less or equal to 100 A
(LB PLUS / MS 63 and 100 A) are correctly protected against short circuit
effects through an MCB (Miniature Circuit Breaker) with a nominal current
less or equal to the one of the busbar
This protection is assured up to MCB short circuit withstand
The busbar trunking systems LB PLUS / MS 63 and 100 A are flame
retardant in compliance with IEC 332-3 : 1992
Mean room temperature (°C)
15
20
25
30
35
40
45
50
55
60
K1 factor
1·15
1·12
1·08
1·05
1·025
1
0·975
0·95
0·93
0·89
Temperature rating schedule
Multiplier coefficient of nominal rating for room temperature values different from 40°C