Siemens 3RA2815-2FW10 Solid-State OFF-Delay Auxiliary Switch

The Siemens 3RA2815-2FW10 is a solid-state auxiliary switch featuring an OFF-delayed function, without a separate control signal input. It includes one normally closed (NC) and one normally open (NO) relay contact. The time range is adjustable from 0.05 to 100 seconds, with an operating voltage of 24-240 V AC/DC at 50/60 Hz. This switch incorporates an integrated varistor to protect against contactor coil transients and uses spring-loaded terminals for connection. It is designed for direct snap-on mounting onto Siemens 3RT20 contactors and 3RH2 contactor relays.

This OFF-delay auxiliary switch is suited for applications where a timed delay is required after the main power or control input to the associated contactor/relay is removed. Common uses include cooling cycles or timed shutdown sequences in industrial machinery and automation.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3RA2815-2FW10. We provide reliable access to quality surplus components, helping you maintain and repair your automation systems efficiently and cost-effectively.