The Siemens 3RT1946-6E is a replacement contact-piece kit for Size S3 contactors in the SIRIUS 3RT1 series. It contains 4 movable and 8 fixed main contacts — a 4 NO configuration — with all mounting parts needed for the swap. The AC-1 resistive rating of 140 A tells you the continuous current capacity when switching non-inductive loads like heaters or lighting banks; for motor duty (AC-3) the contactor itself carries a lower rating, but this kit restores the original contactor's full capability.
Siemens 3RT1946-6E replacement contact pieces, 140 A AC-1, S
MPN3RT1946-6E
Siemens SIRIUS 3RT1 replacement contact pieces, Size S3, 4 NO main contacts, AC-1 rated 140 A, includes 4 movable and 8 fixed contacts with mounting hardware.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What is the closest alternative to 3RT1946-6E?
The manufacturer's stated successor is the SIRIUS 3RT2 series. The exact replacement order code within that series depends on the contactor frame size and contact configuration; the 3RT2 family covers the same Size S3 footprint with updated materials and ratings.
Where can I buy 3RT1946-6E?
This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here.
MPN
3RT1946-6E