Question

How is the overvoltage protector connected, and can it branch the bus cable?

Answer

C — Via a conventional bus connector or directly to a bus device; it cannot branch the bus cable.

Correct: it connects with a bus connector or directly to a device, and cannot be used to branch the bus.

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All proposed choices (exam context)

A.Only by cutting the bus cable and hard-soldering it in line.
B.It is the normal way to branch the bus cable into three directions.
C.Via a conventional bus connector or directly to a bus device; it cannot branch the bus cable.✓
D.Only through the 230 V mains terminals.

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