The Siemens 3RT1945-6A is a replacement contact-piece kit for a 3-pole contactor in frame size S3, rated AC-3 at 37 kW. It includes three movable and six fixed main contacts plus mounting hardware. This is a phased-out product; the official successor contactor family is the SIRIUS 3RT2.
Siemens 3RT1945-6A replacement contact pieces, S3 frame, AC-
MPN3RT1945-6A
Siemens SIRIUS, replacement contact pieces, frame size S3, 3-pole, AC-3 37 kW, 3 NO main contacts, 3RT1945-6A.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
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| Datum: 22.01.2021 | Änderungen vorbehalten © Copyright Siemens 2021 |
Product details
Frequently asked questions
What replaces the 3RT1945-6A?
The official successor contactor family is the SIRIUS 3RT2. However, the 3RT2 uses different contact-piece part numbers, so there is no direct drop-in replacement for this exact kit. The 3RT1945-6A is sourced as a new-old-stock or surplus item.
How do I source the 3RT1945-6A?
This part is sourced to order against an RFQ through surplus and broker channels. No stock or lead-time figures are available; submit an RFQ for a sourcing quote.
MPN
3RT1945-6A