Relpol RSR95-120D20-DC Solid State Relay, 4-32V DC Input, 0-120V DC Output, 20A

The Relpol RSR95-120D20-DC is a high-performance solid state relay engineered for precise and efficient DC switching in demanding environments. By utilizing semiconductor technology, this relay eliminates the mechanical wear associated with traditional electromechanical relays, ensuring a significantly longer operational lifespan and consistent performance. It provides a robust solution for applications requiring frequent switching cycles and high reliability.

Advantages

The primary benefit of this solid state relay is its silent operation and lack of moving parts, which prevents contact arcing and mechanical fatigue. Its compact design allows for easy integration into existing control panels, while the wide control voltage range offers flexibility in system design. Furthermore, the device provides excellent electrical isolation between the input and output circuits, protecting sensitive control electronics from potential voltage spikes or interference.

Suitable for

• Industrial automation systems
• Heating control and temperature regulation
• DC motor control applications
• Lighting control systems
• Electronic equipment requiring fast switching

When it may not be suitable

This relay is specifically designed for DC-to-DC switching applications and should not be used for AC load switching. Additionally, it may not be suitable for environments where the ambient temperature exceeds the manufacturer's specified thermal limits without adequate heat sinking.

Key specifications

• Control voltage range: 4-32V DC
• Load voltage range: 0-120V DC
• Maximum load current: 20A
• Switching technology: Solid state (semiconductor)
• Isolation: High electrical input-to-output isolation

How to use

To use the Relpol RSR95-120D20-DC, connect the control signal wires to the input terminals, ensuring the polarity is observed within the 4-32V DC range. The load circuit should be connected in series with the output terminals, respecting the 0-120V DC voltage limits and the 20A current rating. Ensure that all connections are secure and that the relay is mounted on a suitable surface to facilitate heat dissipation during operation.

What to consider before purchase

• Verify that your load voltage and current requirements fall within the specified limits.
• Ensure the control signal source is compatible with the 4-32V DC input range.
• Assess the need for an external heatsink based on your specific load and duty cycle.
• Confirm the physical space available for mounting the relay.

Usage recommendations

For optimal longevity and performance, always ensure the relay is mounted on a properly sized heatsink if operating near the maximum current rating, and verify that the load does not exceed the specified DC voltage and current parameters.