SSR relay RSR72-28A20-H RSR72-28A20-H 1-phase 2615995

Solid State Relays RSR72 – Reliable AC Load Control

The RSR72-28A20-H solid state relay from RELPOL is a robust solution for switching AC loads on and off. Designed to operate over a wide range of voltages and currents, it performs well in both industrial and building installations. The use of zero-crossing technology minimizes interference and extends the life of the device and connected components. A built-in heatsink ensures effective heat dissipation, resulting in stable operation even under heavy loads.

Characteristics and application

The RSR72 relay is a component dedicated to controlling AC loads with a voltage of 240 V. The control input accepts a 90…280 V AC signal, ensuring compatibility with various control systems. The rated load current is 20 A, allowing it to handle a wide range of heating, lighting and motor devices. Thanks to its heatsink design, the relay is resistant to overheating and can operate in harsh environmental conditions.

RSR72 solid state relays are used in:

• Heating systems: furnaces, radiators, heating mats
• Lighting: control of industrial and building lighting
• Motors: switching AC motors on and off
• Industrial machines and equipment: injection molding machines, mills, industrial washers
• Temperature chambers: precise temperature control
• Packaging machines: automation of packaging processes

Advantages and benefits

• Zero-crossing switching: reduces electromagnetic interference and extends the life of the relay and connected devices. This is particularly important in applications sensitive to interference.
• High overload resistance: enables safe control of devices with high power consumption.
• Integrated heatsink: provides effective heat dissipation, eliminating the risk of overheating and failure. Allows operation at elevated ambient temperatures without additional cooling elements.
• Wide input voltage range: compatibility with various control systems (90…280 V AC).
• Solid construction: ensures reliable operation in harsh industrial conditions.
• Panel or DIN rail mounting: facilitates integration with existing installations.
• No moving parts: eliminates the possibility of arcing and electromagnetic interference, increasing the durability of the device.