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Siemens 3RT1944-5BW41 — Contactors

Siemens 3RT1944-5BW41 SIRIUS Magnet Coil, 48 V DC, S3

MPN3RT1944-5BW41

Siemens SIRIUS magnet coil, Size S3, screw terminal, 48 V DC, for 3RT1 contactors.

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

3RT1944-5BW41 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1944-5BW41 — Other specifications
ParameterValue
1 at DC rated value48 V

Product details

The Siemens 3RT1944-5BW41 is a SIRIUS magnet coil designed for Size S3 contactors, with a 48 V DC control supply voltage and screw-type terminals. This coil is the replacement component for the contactor's solenoid — if the coil fails on a 3RT1 S3 contactor in the field, this is the drop-in spare. The screw terminal connection matches the existing wiring scheme on the contactor base.

Panel integration note

The screw terminals accept 2x (0.5...1.5 mm²) solid or 2x (0.75...2.5 mm²) stranded — standard control wiring. No special tooling needed beyond a screwdriver.

Frequently asked questions

What replaces 3RT1944-5BW41?

The official successor is the SIRIUS 3RT2 series coil. Verify the specific 3RT2 order code for 48 V DC and Size S3 before ordering.

Where can I buy 3RT1944-5BW41?

This coil is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability.

Will 3RT1944-5BW41 fit a panel wired for 3RT1016-1BB42?

No — the 3RT1016-1BB42 is a Size S00 contactor with a 24 V DC coil. The 3RT1944-5BW41 is a Size S3 coil at 48 V DC. The physical frame size and voltage are different; rewiring and a different contactor base are required.

MPN
3RT1944-5BW41