Relpol RSR52-24A25 Single-Phase Solid State Relay 240V AC, 25A, 90-280V AC Control

The Relpol RSR52-24A25 is a high-performance single-phase solid state relay engineered for the precise and efficient switching of AC loads. Designed to handle demanding electrical environments, this device offers a robust output voltage of 240V AC and a current rating of 25A, supported by a wide control voltage range of 90-280V AC. By utilizing semiconductor technology, it eliminates the mechanical wear associated with traditional electromechanical relays, ensuring a significantly longer operational lifespan and consistent performance in high-frequency switching applications.

Advantages

This solid state relay provides silent operation, which is essential for environments where noise reduction is a priority. Its fast switching speed allows for precise control of electrical processes, while the absence of moving parts makes it highly resistant to vibrations and mechanical shocks. The device is built for reliability, offering a maintenance-free solution that maintains high efficiency even under continuous load conditions, thereby reducing downtime and operational costs in industrial systems.

Suitable for

• Industrial automation and control systems
• Heating element and furnace temperature regulation
• Lighting control systems
• Packaging and food processing machinery
• Motor control applications requiring frequent start-stop cycles

When it may not be suitable

This relay is not designed for switching DC loads, as it is specifically optimized for AC applications. Furthermore, it may not be suitable for high-inrush current applications without appropriate current limiting measures, as excessive surges can potentially damage the internal semiconductor components.

Key specifications

• Output voltage: 240V AC
• Maximum load current: 25A
• Control voltage range: 90-280V AC
• Switching type: Zero-crossing
• Mounting style: Panel mount

How to use

Installation should be performed by qualified personnel in accordance with local electrical codes. The relay should be mounted on a suitable heat sink to ensure proper thermal dissipation, as solid state relays generate heat during operation. Connect the control signal to the input terminals and the load in series with the output terminals. Ensure that the load current does not exceed the rated 25A and that the control voltage remains within the specified 90-280V AC range to prevent malfunction.

What to consider before purchase

• Verify that your load type is compatible with AC switching.
• Ensure that the peak current of your load does not exceed the relay's maximum capacity.
• Check if your installation environment requires additional cooling or heat sinking.
• Confirm that your control system provides the necessary AC voltage range.

Usage recommendations

Always ensure that the relay is properly grounded and protected by an appropriate fuse or circuit breaker to prevent damage from short circuits or overcurrent conditions.