3-phase emergency relay, voltage monitoring, sequential U 304-576VAC RM22TR33

3-phase emergency relay, voltage monitoring, sequential U 304-576VAC

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Undervoltage control function: yes
Rated control voltage Us for AC 50 Hz: 380 ... 480
Phase sequence control: yes
Phase Failure Detection: Yes
Voltage measuring range: 304 ... 576
Over-voltage control function: yes
Phase unbalance control: no

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