Relpol RPI-3Z-UNI Electromagnetic Relay 3Z AgSnO2 12-240V AC/DC 8A

The Relpol RPI-3Z-UNI is a high-performance electromagnetic relay engineered for demanding industrial control and automation environments. Featuring three changeover contacts (3Z) with silver tin oxide (AgSnO2) contact material, this device provides excellent resistance to high inrush currents and ensures long-term operational reliability. Its universal power supply capability allows it to function seamlessly across a wide voltage range of 12-240V AC/DC, making it a flexible solution for diverse electrical installations.

Advantages

The primary benefit of this relay is its universal voltage compatibility, which simplifies inventory management and reduces the need for multiple relay types in a single system. The use of AgSnO2 contact material significantly enhances durability, particularly when switching inductive or capacitive loads that typically cause contact welding. Its robust construction ensures consistent switching performance, contributing to the overall stability and safety of automated control circuits.

Suitable for

• Industrial automation and control systems
• Switching of lighting circuits and heating elements
• Interface applications between controllers and high-power loads
• General electrical engineering and panel building

This relay may not be suitable for applications requiring extremely high-frequency switching or environments where the load current consistently exceeds the 8A rated limit. It is also not intended for use in high-vibration environments without appropriate protective housing or mounting solutions.

Key specifications

• Contact configuration: 3 changeover (3Z)
• Contact material: AgSnO2
• Rated current: 8A
• Supply voltage range: 12-240V AC/DC
• Frequency: 50/60Hz

To use the Relpol RPI-3Z-UNI, ensure the device is mounted securely onto a compatible socket or DIN rail within an electrical enclosure. Connect the control voltage to the input terminals and wire the load circuit through the designated contact terminals. Always verify that the supply voltage matches the specified range before energizing the circuit to prevent damage to the internal components.

What to consider before purchase

• Verify that the 8A current rating is sufficient for your specific load requirements.
• Ensure the physical dimensions are compatible with your existing control panel layout.
• Confirm that the 3Z contact configuration meets the logic requirements of your control circuit.

For optimal longevity and performance, it is recommended to protect the relay contacts with appropriate surge suppression devices when switching inductive loads, such as motors or solenoids. Regularly inspect the terminal connections for tightness to prevent overheating during prolonged operation.