Siemens SINAMICS S220

• Cable bundling (laying cables in a common duct)
• Type of cable routing
The overcurrent protection devices can be determined according to EN60204-1, Section14.
The following are recommended as overcurrent protective devices:
• On the primary side: Circuit breakers
• On the secondary side: Miniature circuit breakers or SITOPselect (article number
6EP1961-2BA00)
Observe the following when selecting miniature circuit breakers:
• the local installation guidelines
• the tripping characteristic of the miniature circuit breaker
The miniature circuit breaker must be selected to match the loads to be protected and the
maximum current provided by the power supply unit in the event of a short circuit.
Table 4-4 Miniature circuit breaker according to core cross-section and temperature
Core cross-section of the cable Maximum rated current of the miniature circuit breaker
Max. current up to 40°C Max. current up to 55°C
1.5mm
2
10A 6A
2.5mm
2
16A 10A
4mm
2
25A 16A
6mm
2
32A 20A
24V busbar 20A 20A
More information
You can 󹪝nd more information about possible overcurrent protection devices on the Internet:
Siemens Industry Mall (
https://mall.industry.siemens.com/goos/WelcomePage.aspx?
regionUrl=/de&language=en)
4.10.5 Overvoltage protection
4.10.5.1 Using overvoltage protection elements
Overview
To protect the 24 V supply of the components against overvoltage, from a certain cable length,
overvoltage protection elements must be installed.
Description
Overvoltage protection elements are required for a cable length of 30m and longer.
Application planning
4.1024 V DC supply voltage
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA 51