Siemens 3RA2813-1FW10 Solid-State ON-Delay Auxiliary Switch
Siemens 3RA2813-1FW10 solid-state ON-delay auxiliary switch.
The Siemens 3RA2813-1FW10 is a solid-state auxiliary switch with an ON-delay function. It provides one normally closed (NC) and one normally open (NO) relay output. The adjustable time range is from 0.05 to 100 seconds, operating on a wide voltage input of 24-240 V AC/DC at 50/60 Hz. This switch features an integrated varistor for suppression of contactor coil transients and uses screw terminals. It is designed for direct snap-on mounting onto Siemens 3RT20 contactors and 3RH2 contactor relays.
This ON-delay auxiliary switch is valuable in applications requiring timed switching operations as part of a larger control sequence, such as motor pre-start checks, timed activation of auxiliary functions, or implementing delays in machine cycles across manufacturing and automation industries.
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| Part Number | 3RA2813-1FW10 |
| Manufacturer | Siemens |
| Type | Solid-State Auxiliary Switch |
| Function | ON-Delay |
| Contacts | 1 NC + 1 NO |
| Time Range | 0.05-100 s |
| Voltage | 24-240 V AC/DC |
| Frequency | 50/60 Hz |
| Protection | Integrated Varistor |
| Terminals | Screw |
| Mounting | Snap-on to 3RT20 and 3RH2 |