Connecting Up; Safety When Connecting Up - Siemens SIMATIC NET SCALANCE X-200RNA Operating Instructions Manual

Connecting up

7.1

Safety when connecting up

Safety notices
When connecting up the device, keep to the safety notices listed below.
Safety extra low voltage
The SCALANCE X204RNA is designed for operation with Safety Extra-Low Voltage (SELV) by a
Limited Power Source (LPS). (This does not apply to the SCALANCE X204RNA EEC.)
The power supply therefore needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (LPS) complying with IEC
• The power supply unit for the device must meet NEC Class 2 according to the National
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
Maximum current
The maximum current via the terminals is 10 A. You should therefore include a fuse that trips
at a current higher than 10 A. The fuse must meet the following requirements:
• Suitable for 300 V DC / 250 V AC / max. 10 A
• Breaking current at least 10 kA
• UL/CSA listed (UL 248-1 / CSA 22.2 No. 248.1)
As an alternative, the following requirements:
• Breaking current at least 10 kA
• Approved in compliance with IEC 60127-1 / EN 60127-1
• Breaking characteristics: B or C for a circuit breaker or slow-blow fuse
SCALANCE X-200RNA
Operating Instructions, 04/2022, C79000-G8976-C342-07
WARNING
60950‑1 / EN 60950‑1 / VDE 0805‑1 or IEC 62368-1 / EN 62368-1 / VDE 62368-1 may be
connected to the power supply terminals.
Electrical Code (r) (ANSI / NFPA 70).
WARNING
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