5
U
aux
Auxiliary voltage
A, B, C, D, E, F Output relays
IRF Self-supervision
SGR Switchgroups for the configuration of trippings and signallings
SGB Switchgroup for the configuration of the blocking or control signal
TRIP Trip output relay
SIGNAL 1 Signal on overcurrent trip
SIGNAL 2 Signal on earth-fault trip
START 1 Starting or auxiliary trip signal as selected with switchgroup SGR3
START 2 Starting of overcurrent low-set stage I>
U1 Three-phase overcurrent and non-directional earth-fault module SPCJ 4D29
U3 Input module SPTE 4E2
U2 Power supply and output relay module SPTU 240 R1 or SPTU 48 R1
T1…T8 Starting and tripping indications
SERIAL PORT Serial communication interface
SPA-ZC_ Bus connection module
Rx/Tx Receiver bus terminal (Rx) and transmitter bus terminal (Tx) of
the bus connection module
Fig. 3. Rear view of relay SPAJ 142 C.
Made in Finland
= 63
68
69
77
78
80
81
1
2
3
4
5
6
7
8
9
25
27
28
61
62
63
65
66
74
75
70
71
72
10
11
Serial Port
SPA
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