Monitoring relay RPN-1VF-A400 864371

Reliable voltage monitoring in three-phase networks

The RPN-1VF-A400 relay is a solid solution for monitoring voltage in 3-phase 3(N) – 400/230V networks. The device is designed to detect phase loss and voltage asymmetry, ensuring protection of connected devices and electrical installations. The relay is powered directly from the monitored network, simplifying installation and reducing costs.

Functionality and application

RPN-1VF-A400 performs LOST D (phase loss monitoring) and ASYM D (asymmetry monitoring) functions. The built-in changeover contact allows controlling external alarm or disconnecting circuits in case of detecting irregularities. The factory-set asymmetry threshold of 55V ensures a quick response to potential power supply problems. The relay will work well in both industrial installations and commercial buildings, where voltage stability is crucial for the correct operation of devices.

Construction and mounting

Compact dimensions (17.5 mm width, 90 mm height and 64.5 mm depth) allow for easy mounting of the relay in electrical switchboards. Screw connections ensure secure and durable connection of wires. The overload capacity of at least 1.2 Un guarantees resistance to short-term voltage surges that may occur during the starting of motors or other high-power consumers. The built-in hysteresis function prevents unnecessary switching on and off in case of minor voltage fluctuations.