Safety notes
SCALANCE XR-500
10 Operating Instructions, 05/2017, A5E03275845-11
Suitable fusing for the power supply cables
The current on the terminal may not exceed 25 A. Use a fuse, that protects against currents
> 25 A. The fuse must meet the following requirements:
In areas according to NEC or CEC:
• Suitable for DC (min. 60 V / 25 A)
• Breaking current at least 10 kA
• Approval according to ANSI/UL 248-1
• Suitable for the protection of DC power supply circuits
In other areas:
• Suitable for DC (min. 60 V / 25 A)
• Breaking current at least 10 kA
• Approval in compliance with IEC 60127-1 / EN 601127-1
• Breaking characteristics: B or C for circuit breakers and fuses
• Suitable for the protection of DC power supply circuits
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
Do not open when energized. Note that this does not apply to opening the service panel in
the housing.
Safety notices for use according to ATEX and IECEx
If you use the device under ATEX or IECEx conditions you must also keep to the following
safety notices in addition to the general safety notices for protection against explosion:
Do not press the SELECT/SET button when there is an explosive atmosphere.
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