Help identify the machines in the shield

Hello, please tell me what kind of machines? Stand in the ventilation shield. I suspect that this is some kind of RCD, but I would like to hear an authoritative opinion.

Automata in the shield

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  • Admin

    In the photo, single-pole machines. The QF designation also indicates that these are circuit breakers. RCDs cannot be unipolar. If you are interested in which particular denomination of machines - look carefully at all the markings on the case. On the photo you can not see any denominations.

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