SSR relay RSR72-48D20-H RSR72-48D20-H 1-phase 2615990

Solid State Relay SSR – Reliable Load Control

The RSR72-48D20-H solid state relay is a robust solution for switching AC loads, especially where high switching frequency and long life are required. Thanks to its design without moving parts, it eliminates the risk of arcing and electromagnetic interference, resulting in quiet operation and increased system reliability. This model is particularly useful in industrial applications where it is crucial to isolate control circuits from power circuits.

Characteristics and application

The RSR72-48D20-H relay is designed to work with loads at 480 V AC. It has a control input accepting 4…32V DC signals, ensuring compatibility with a wide range of PLCs and other logic circuits. The integrated heatsink effectively dissipates heat, allowing operation with currents up to 20A (AC1). This makes the relay ideal for controlling various devices such as heaters, motors, lighting, and solenoid valves.

Advantages and benefits

• Zero-crossing switching: Ensures smooth load switching, minimizing inrush currents and reducing disturbances in the power supply network.
• High switching frequency: The lack of mechanical elements allows for very frequent switching on and off without the risk of damaging the relay.
• Long life: Semiconductor design guarantees a significantly longer life compared to traditional electromechanical relays.
• Quiet operation: The absence of moving parts eliminates noise generated during switching.
• Integrated heatsink: Enables efficient heat dissipation, ensuring stable operation even under heavy loads.
• Versatility: Can be controlled by both DC and AC signals (depending on the version).
• Interference resistance: The lack of mechanical elements increases resistance to vibration and electromagnetic interference.

This model from the RSR72 series by Relpol is a proven component for installers and users looking for a reliable solution for controlling loads in demanding industrial conditions.