Single-phase programmable voltage relay F&F CP-721-FPV for photovoltaic installations. Its features are as follows:

• Supply voltage: 150÷300 V AC
• Contact activation voltage: 245÷265 V, step 1 V
• Deactivation hysteresis: 1÷10 V, step 0.5 V
• Activation and deactivation delay: 0÷999 s, step 1 s
• Maximum load current: 16 A
• Contacts: 1 × NO, with contact separation
• Indicator: red LED, 3 × segment LED display 5 × 9 mm
• Measurement accuracy: ±1 V
• Connection: screw terminals 2.5 mm² (flexible cable), 4.0 mm² (solid cable)
• Tightening torque: 0.5 Nm
• Consumption: 0.8 W
• Operating temperature: -25 ÷ 50 °C
• Dimensions: 2 units (35 mm), mounting on 35 mm rail
• Protection rating: IP20
• Thermal protection: with return to normal operation after temperature drop and 10 minutes elapsed