Relpol RPN-1VFT-A400 3-Phase Monitoring Relay 1P 3(N)400/230V AC 50/60 Hz

The Relpol RPN-1VFT-A400 is a high-precision 3-phase monitoring relay engineered for industrial and electrical control systems. This device provides continuous oversight of phase parameters, ensuring that electrical equipment operates within safe voltage limits. By detecting irregularities such as phase loss or voltage fluctuations, it helps prevent potential damage to sensitive machinery and improves the overall reliability of electrical installations.

Advantages

This monitoring relay offers robust protection for complex electrical networks by providing real-time diagnostics of power supply conditions. Its design focuses on operational stability, allowing for seamless integration into existing control panels. The device is built to withstand demanding industrial environments, ensuring long-term performance and consistent monitoring accuracy for 3-phase systems.

Suitable for

• Industrial automation and control systems
• Protection of 3-phase motors and pumps
• Electrical distribution boards
• Monitoring power supply stability in commercial facilities

This relay may not be suitable for single-phase applications or systems operating outside the specified nominal voltage range of 3(N)400/230V AC. It is also not intended for use in high-voltage power transmission grids or environments where extreme environmental conditions exceed the manufacturer's technical ratings.

Key specifications

• Nominal voltage: 3(N)400/230V AC
• Frequency: 50/60 Hz
• Output configuration: 1P (1 changeover contact)
• Application: 3-phase monitoring

How to use

The relay should be installed by a qualified professional within a standard electrical control cabinet. Connect the phase lines to the designated input terminals according to the wiring diagram provided with the device. Ensure that the supply voltage matches the nominal specifications of the relay. Once connected, the device will automatically begin monitoring the phase parameters and will trigger the output contact if an irregularity is detected.

What to consider before purchase

• Verify that your system voltage matches the 3(N)400/230V AC requirement.
• Ensure the relay is compatible with your existing control circuit voltage.
• Confirm that the installation space meets the necessary environmental standards for industrial components.

Usage recommendations

Regularly inspect the relay connections to ensure they remain secure and free from oxidation. Periodically test the monitoring function during scheduled maintenance to confirm that the protection system remains fully operational.