| Item condition | New |
| Manufacture name | CZF-312 Relay 1C+1O ar reg. F&F |
| Brand | F&F |
| Categories |
Monitoring Relays
Voltage Monitoring Relays |
| Country of origin* | CN |
| * The actual country of origin may differ depending on the delivery batch. To confirm the specific country of origin, please contact your account manager. | |
| ETIM | EC001438 |
| Packing level 1 | 5908312593140 |
Monitor with action delay 0,5 sec.
Three phase monitors serve to protect the three-phase electric motors supplied from three-phase mains, against phase collapse in at least one phase or against phase-to-phase voltage asymmetry, threatening to damage the motor.
Functioning
Phase collapse in at least one phase or voltage unbalance between phases above set value causes switching-OFF the motor. The motor switching-OFF occurs with 0,5 sec delay, which prevents any accidental motor disconnecting at temporary voltage drop. The re-connection will occur automatically at voltage increase of 5V above activation voltage (i.e. of value of voltage hysteresis). At occurrence of these disturbances, it is not possible to set a motor in motion.