Voltage monitoring relay FF CP-709 1-phase 1P 16A for 150–210V / 230–260V AC

FF CP-709 is a single-phase voltage monitoring relay designed to monitor and protect electrical installations against under-voltage and over-voltage conditions. The device operates with selectable supply ranges of 150–210 V AC or 230–260 V AC and provides a single-pole (1P) switching contact with a rated switching capacity of 16 A. FF CP-709 disconnects the load automatically when supply voltage moves outside the selected window, helping to prevent damage to motors, control equipment and other connected devices.

Advantages

The relay offers straightforward voltage surveillance with a compact 1P design and a clear switching rating of 16 A for typical motor and equipment circuits. Its dual selectable operating ranges make it adaptable to different single-phase supply systems. The automatic disconnection on under-voltage and over-voltage reduces the risk of equipment failure and simplifies protection schemes in distribution boards and control panels.

Suitable for

• Protection of single-phase motors and pumps
• Monitoring supply to control equipment and compressors
• Integration in distribution boards and industrial control panels
• Commercial and light industrial electrical installations

Key specifications

• Operating supply ranges: 150–210 V AC and 230–260 V AC (selectable)
• Phase: single-phase
• Contact configuration: 1-pole (1P)
• Rated switching current: 16 A
• Function: automatic disconnection on under-voltage and over-voltage

How to use

Install the FF CP-709 in accordance with local electrical codes and mount it in a suitable distribution board or control enclosure. Select the appropriate voltage window (150–210 V or 230–260 V) that matches the supply being monitored. Connect the supply and load to the relay terminals following the wiring diagram provided by the manufacturer and ensure secure connections. After wiring, apply power and verify correct operation by testing the relay response to voltage conditions within and outside the selected range.

Usage recommendations

For reliable operation, place the relay in a ventilated enclosure away from excessive heat and moisture. Verify compatibility of connected loads with the 16 A switching capacity and consider using an external contactor for larger motor starters. Periodically inspect wiring and terminal tightness and perform functional tests after installation or maintenance.