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Field isolating switch FR12- Series installation devices for mounting on DIN rail DIN-EN 50 022. The FR12 field isolating switch interrupts the power supply after downstream loads have been switched off, thus preventing interfering electromagnetic fields. Small consumers are permitted up to a current consumption of 200 mA, which do not prevent disconnection after larger consumers have been switched off. The limit value does not have to be set manually, but is learnt by the FR12.1. Loads with a current consumption of more than 200 mA are always defined as loads that should cause the mains voltage to be switched on. As long as no load is switched on, the monitored circuit remains 1-pole disconnected from the mains. The neutral and protective conductors are not switched in order to prevent an antenna effect. A DC voltage adjustable between 5 V DC and 230 V DC is applied for monitoring. When a load is switched on, the field isolator switches the phase to u
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