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Siemens 3RT1944-5BW42 — Contactors

Siemens 3RT1944-5BW42 SIRIUS Magnet Coil, 48 V DC, Spring-Lo

MPN3RT1944-5BW42

Siemens SIRIUS, magnet coil for Size S3 contactors, 3RT1944-5BW42, 48 V DC, spring-loaded connection technology.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1944-5BW42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1944-5BW42 — Other specifications
ParameterValue
1 at DC rated value48 V

Product details

The Siemens SIRIUS 3RT1944-5BW42 is a replacement magnet coil for Size S3 contactors in the SIRIUS family. It is a 48 V DC coil with spring-loaded (cage-clamp) terminals, designed to be swapped into an existing S3 contactor when the original coil fails or when a control voltage change is needed.

Lifecycle reality — phased out, successor named

This order code is explicitly marked as a phased-out product. The manufacturer's designated successor is the SIRIUS 3RT2 series.

Frequently asked questions

What voltage does this coil require?

48 V DC. The control supply voltage type is DC, and the rated value is 48 V.

What connection technology does this coil use?

Spring-loaded (cage-clamp) terminals. No screwdriver needed for the wire connection.

MPN
3RT1944-5BW42