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Siemens 3RE4121 Series

8 variants · Siemens

About the Siemens 3RE4121 Series

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.

Select a variant by

Weight
8 lb · 14 lb

Shared specifications

Mounting
Surface mounting and installation
Temp operating max
40 °C
Temp operating min
-20 °C
Temp storage max
65 °C
Temp storage min
-30 °C

Variant comparison

Parameter3RE4121-5AA31-1FF63RE4121-5AA31-1HY03RE4121-5AA35-4SY03RE4121-5CA31-4AF6
Weight8 lb8 lb8 lb14 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.

All variants