Siemens SENTRON 3WA Air Manual page 48

Description
2.3 Protection system
Changing the current rating
For the three sizes of the 3WA circuit breaker, the rated current I
values given in the table below by means of the option plug. The selected value should
correspond to the rated current of the power distribution system and must not exceed the
maximum rated current of the circuit breaker I
Rated current
200 A
250 A
315 A
400 A
500 A
600 A
630 A
800 A
1000 A
1200 A
1250 A
1600 A
2000 A
2500 A
3000 A
3200 A
4000 A
5000 A
6000 A
6300 A
Changing the basic protective functions
Option plugs with the following basic protective functions are available for the ETU600
electronic trip unit:
Long time LT
Short time ST
Instantaneous short-circuit protection INST
Ground-fault protection GF
By exchanging the option plug and using an option plug LSI, the ground-fault protection GF
on the ETU600 LSIG electronic trip unit can be completely deactivated.
46
Size 1
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
–
Option plug with protective
can be changed to the
n
(see circuit breaker accessory label).
n max
Size 2
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
–
Option plug with protective
function LSI
✓
✓
✓
–
Equipment Manual, 05/2021, 92310000002-03
Size 3
–
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
function LSIG GFx
✓
✓
✓
✓
3WA Air Circuit Breakers