Electrical Connection - Siemens SINAMICS S120 Manual

DC link components
7.2 Braking resistors
Figure 7-15 Dimension drawing braking resistor 50 kW/250 kW
7.2.4

Electrical connection

Recommended cable cross-sections:
• For 25/125 kW: 35 mm²
• For 50/250 kW: 50 mm²
Thermostatic switch
A thermostatic switch is installed to protect the braking resistor against overload. Its floating
contacts must be integrated in the fault chain on the line side.
Table 7- 7
Terminal
T1
T2
Max. connectable cross-section: 2.5 mm²
356
Thermostatic switch connection
Function
Thermostatic switch connection
Thermostatic switch connection
Technical specifications
Voltage: 240 VAC
Load current: Max. 10 A
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3