
3RE4121-5AA31-1FF6
Siemens
8 variants · Siemens
The Siemens 3RE4121 Series series groups 8 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common mounting of Surface mounting and installation, temp operating max of 40 °C and temp operating min of -20 °C. Variants differ by weight, so you can match the exact weight your application requires using the selection guide below.
| Parameter | 3RE4121-5AA31-1FF6 | 3RE4121-5AA31-1HY0 | 3RE4121-5AA35-4SY0 | 3RE4121-5CA31-4AF6 |
|---|---|---|---|---|
| Weight | 8 lb | 8 lb | 8 lb | 14 lb |
Request a quote on any Siemens 3RE4121 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

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