Circuit Breaker (Input Current > 800 A) - Siemens SINAMICS S120 Manual

6.1.1.2 Circuit breaker (input current > 800 A)
At currents greater than 800 A, the circuit breaker, which is located in the center of the
cabinet, takes on the function of isolating the system from the supply and the overload and
short-circuit protection. The circuit breaker is internally activated and has its own internal
power supply.
As a consequence, the device is sufficiently protected using the factory setting.
The circuit breaker is set as follows in the factory:
Table 6- 3 Factory setting of the circuit breaker for the Basic Line Connection Modules
Article number
Basic Line Connection Module
6SL3735-1TE41-2LA3
6SL3735-1TE41-7LA3
6SL3735-1TG41-3LA3
6SL3735-1TG41-7LA3
Incorrect circuit breaker setting
Incorrect settings can cause unwanted or delayed tripping of the circuit breaker and result
in damage to the cabinet unit and can therefore result in death or severe injury.
• Check the settings described above, and if required, adapt the circuit breaker settings
Note
Additional information
Detailed and comprehensive instructions and information for the circuit breaker as well as
the standard and additional options can be found in the accompanying operating
instructions. These operating instructions are available as additional documentation on the
customer DVD supplied with the device.
X50 "circuit breaker" checkback contact
Table 6- 4
Terminal
1
2
3
Max. connectable cross-section: 2.5 mm²
NC: Normally-closed contact, NO: Normally-open contact, COM: Center contact
1)
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Input current
1000 A
1420 A
1070 A
1350 A
WARNING
corresponding to the factory setting.
Terminal block X50 "Circuit-breaker" checkback contact
Designation
1)
NO
NC
COM
Overload trip (L) Short-time delayed
short-circuit release (S)
0.8 2
0.9 2
0.9 2
0.9 2
Technical data
"Circuit breaker" checkback contacts
Max. load current: 3 A
Max. switching voltage: 250 VAC
Cabinet Modules
6.1 Basic Line Connection Modules
Short-circuit re-
lease delay (t
0
0
0
0
)
sd
143