The Siemens 3RA2815-2FW10 is a solid-state time-delay auxiliary switch designed to offer precise off-delay functionality without the need for auxiliary voltage. This switch is engineered to be snapped onto the front of 3RT2 contactors, providing a seamless integration for a variety of industrial applications. It features a relay with 1 normally closed (NC) and 1 normally open (NO) contact, capable of handling a wide voltage range from 24 to 240V AC/DC.
With a time range adjustable from 0.05 to 100 seconds, this auxiliary switch allows for meticulous control over the timing of electrical circuits, enhancing the operational flexibility of your control systems. The spring-type terminals ensure a secure and maintenance-free electrical connection, while the integrated varistor offers protection by damping contactor coils, thus extending the lifespan of the device.
Constructed to meet the demands of industrial environments, the 3RA2815-2FW10 boasts a robust design with an IP20 protection class for both the front and terminal areas, ensuring reliable performance even in challenging conditions. It is designed to operate within an ambient temperature range of -25 to +60°C, making it suitable for a wide range of operating climates.
This auxiliary switch is also characterised by its compact dimensions, with a height of 38mm, a width of 45mm, and a depth of 74mm, allowing for efficient use of space within control cabinets. Its versatility is further enhanced by the ability to mount it in any position, just like the contactor it accompanies.
The Siemens 3RA2815-2FW10 is a testament to the brand's commitment to quality, reliability, and innovation, making it an essential component for industrial control applications that require precise timing control.