Phase control relays CZF-311 TRMS

Reference: CZF-311-TRMS, EAN13: 5902431673707

Product description

With adjustable actuation threshold at voltage asymmetry.
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 4 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.

Power supply voltage	3 × 400 V + N
Cooperation with power generators	NO
Phase failure / asymmetry monitoring	YES
Phase sequence control	NO
Contactor contact monitoring	NO
The executive element	relay
Maximum load current	10 A
Contact configuration	1 × NO/NC
Separation of the contact	YES
Voltage asymmetry	40÷80 V
Voltage hysteresis	5 V
Switch off delay	4 s
Power control	3 × LED green
Terminal	pluggable terminal blocks 2,5 mm²
Tightening torque	0,4 Nm
Power consumption	0,56 W
Working temperature	-25÷40°C
Dimensions	1 module (18 mm)
Assembly	on rail 35 mm
Ingress Protection Marking	IP20
TrueRMS	TAK