1
C11
75
C12
C1
77
C2
D1
72
D2
41
K51/SIGN
K51/SIGN
H12
I 12
K51/SIGN
H11
K51/SIGN
I 11
HC1
42
K51/SIGN
K51/SIGN
H22
I 22
K51/SIGN
H21
K51/SIGN
I 21
HC2
43
K51/SIGN
K51/SIGN
H32
I 32
K51/SIGN
H31
K51/SIGN
I 31
HC3
K51
K51
Rct
25
24
Rca
K51/MEAS
K51/MEAS
21
20
22
N
L1L2L3
K51/SIGN
K51/SIGN
H4
K51/SIGN
K51/SIGN
H3
K51/SIGN
K51/SIGN
H2
K51/SIGN
K51/SIGN
H1
HC
2
SACE max | ABB
E
Q/4
Q/3
81
Q/2
Q/1
79
K51
76
YO
K51
78
YC
73
74
RTC
71
K51
27
K51
K51/..
+/L
ALIM.AUS.
31
AUX. SUPPLY
-/N
32
48
K51/SYNC
K12
KS1
XSC
K14
KS2
K51/SYNC
Vs
VS1
K11
VS2
K13
51
K51/COM
K22
..
K24
W..
..
K21
K23
58
61
K51/COM
K32
..
K34
W..R
..
K31
K33
66
26
Rct
Rca
Ge+
Ge-
K51/MEAS
VN
23
L1
L2
L3
14
F1
S33M/1
M
13
S33M/2
12
S51
11
K6
Q/10
O 04
K10
K5
Q/9
O 03
K9
K4
Q/8
O 02
K8
K3
Q/7
O 01
K7
Q/6
Q/5
42
44
41
32
34
31
Open/closed auxiliary contacts
22
24
of the circuit-breaker (first set)
21
12
14
11
C21
C22
C11
C13
C12
C1
C3
C2
D1
D2
Contact ready to close
46
48
45
Input of current sensor on the external
Ne+
Ne-
neutral
K1
K2
W3
Auxiliary power supply and local bus
W4
Szi
Zone selectivity
Szo
Gzi
Gzo
Szc
VN
V1
V2
V3
Trip reset coil YR
R1
R2
U1
U2
36
38
35
96
98
95
02
04
01
92
94
91
82
84
81
72
74
71
62
64
61
52
54
51
1
Figure number of the diagram
Second closing coil
First opening coil
First closing coil
Second opening coil
Under-voltage coil
Signalling modules
and/or Ekip synchro check
and/or Communication modules
and/or redundant communication
modules
Input of the TRAFO star centre sensor
Input of the residual-current protection
RC sensor
Ekip Measuring voltage sockets
Closing springs loading motor
Springs loaded position signalling
contact
Trip signalling contact
Ekip signalling 4K
Additional auxiliary contacts
of the circuit-breaker (second set)
n
81
79
75
76
77 78
72
73
74
71
27
31
32
41
42
43
48
..
..
51
58
61 ..
..
66
26
25
24
20
21
22
23
14
13
12
11
2
1