6
Measuring current transformers
CTUB101-CTBC… series measuring current transformers in combination with MRCDs convert AC
and DC currents into an evaluable measuring signal. They can be used in DC, AC, and 3(N)AC sys-
tems. The shielded measuring current transformers of the CTUB101-CTBC…P series also feature a
full magnetic shield to prevent nuisance tripping due to external influences.
6.1
Wiring diagram
i
The measuring range must be set according to the response values in the evaluator. It is
imperative to observe the manual of the respective measuring current transformer.
6.2
Dimension diagrams
CTX-…
CTBCx
CTUB101
+12V
-12V T
GND
S1(k) S2(l)
1 m
2,5 m
5 m
10 m
50 mm
250 mm
CTX-…
CTBCx
CTUB101
+12V
-12V T
GND
S1(k) S2(l)
1 m
2,5 m
5 m
10 m
50 mm
250 mm
MRCDB423
d
b
g
f
k
c
a
e
A
g
a
d
e
c
f
b
D
d
a
e
b
c
C
d
e
f
c
b
a
B
Dimensions (mm), tolerance: ±0.5 mm
Type
a
b
c
d
e
f
g
A
CTUB…-CTBC20(P)
75
83
37 ø 20 46 60.5
–
CTUB…-CTBC35(P)
97
130
47 ø 35 46
61
–
B
CTUB…-CTBC60(P) 126 151
57 ø 60 56
78
–
C
CTUB…-CTBC120(P) 188 225
96 ø 120 65
96
139
CTUB…-CTBC210(P) 302 339 153 ø 210 67
113 277
D
CTUB
…
74
44
30
32
4.6
–
–
MRCDB423_D00396_01_M_XXEN/06.2021 15
LINETRAXX® MRCDB423
