Phase loss and asymmetry sensor 10A CZF-311 F&F

Product description

The phase loss sensor is a device that monitors the phase voltage of motors or other equipment. With its help, you can try to run them in open phase conditions or in single-phase mode, thus eliminating motor burnouts. It works on the principle of phase voltage, which occurs in a three-phase system. It also protects against phase loss.

It works on the principle of protecting the motor from possible voltages in power cables. It detects the operating power of the equipment in question, when there is a phase loss in any of the three phase modes, the wire loses or recharges power. A time delay of about 1.5 seconds has been introduced to eliminate the possibility of nuisance tripping.

Technical data:

• Commercial designation CZF-311
• Type of modular relays
• Number of poles 3P + N
• Number of 18mm modules 1
• NO/NC contact type (changeover contact)
• Contact separation yes
• Power supply signaling 3xLED green
• Rated current In 10A
• Rated voltage Un 3×400/230V+N
• Voltage asymmetry of trip 40÷80 V
• Voltage hysteresis 5 V~
• Energy consumption 0.56 W
• Cooperation with power generators no
• Phase loss / asymmetry control yes
• Phase sequence control no
• Contactor contact monitoring no
• Mounting 35 mm rail (TH35/DIN)
• Connection method screw terminals
• Max. cross-section of connecting wires 4 mm²
• Tightening torque 0.5 Nm
• Protection class IP20