Siemens SENTRON PAC3120, Manual, Page: 49 / 160

Connection
4.3 Connection examples
PAC3120 and PAC3220
Equipment Manual, 10/2019,
L1V30425208F-01
47
2. 3-phase measurement, 4 conductors, unbalanced load, with voltage transformer, with
3 current transformers
Connection type 3P4W
* The fuses are only used for cable protection.
All commercially available miniature circuit breakers up to 20 A (C) can be used.
** Connection of supply voltage
Figure 4-4 Connection type 3P4W, with voltage transformer, with three current transformers
3. 3-phase measurement, 4 conductors, unbalanced load, without voltage transformer, with
1 current transformer
Connection type 3P4WB
* The fuses are only used for cable protection.
All commercially available miniature circuit breakers up to 20 A (C) can be used.
** Connection of supply voltage
Figure 4-5 Connection type 3P4WB, without voltage transformer, with 1 current transformer