3RT1944-5AC21

Replacement coils for Siemens SIRIUS large contactors, AC 24V specification, screw terminal wiring, compatible with 3RT1044 series S3 size contactors. Suitable for factory spare parts inventory and emergency repair of sudden failures. Kenxin Motor has stock available and can provide selection consultation services.

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Siemens 3RT1944-5AC21 SIRIUS S3 contactor coil AC24V

Product Positioning

The 3RT1944-5AC21 is an original equipment manufacturer (OEM) replacement coil for Siemens SIRIUS large-size S3 contactors, specifically designed for the 3RT1044 series power contactors. This coil is designed for AC 24V, 50/60Hz power supply and features screw terminal wiring for easy and quick replacement by maintenance personnel, ensuring stable and reliable contactor operation. As an authorized distributor of Kenxin Motors, we can assist customers in confirming the actual applicable model and voltage before placing an order.

Core Product Advantages and Features

Original replacement coil

The original operating characteristics of the SIRIUS S3 size contactor will be preserved; normal engagement and disengagement will be restored after replacement.

AC24V specification

It corresponds to the commonly used voltage of low-voltage control power supplies and is suitable for the existing wiring systems of most Taiwanese factories.

Screw terminal wiring

The installation and replacement process is intuitive, allowing on-site personnel to complete the replacement quickly.

Applicable to 3RT1044 series

Designed specifically for large SIRIUS S3 frame contactors, non-general purpose coil

Stable original quality

Maintaining the consistent reliability of Siemens contactors, reducing the risk of repeated tripping or failure to engage.

project	Specification
Product Type	SIRIUS Large Contactor Replacement Coil
Applicable contactor series	3RT1044 (S3 size)
Rated voltage	AC 24V
Rated frequency	50/60Hz
Wiring method	Screw terminals
Contactor size	S3
Model series	3RT19 44-5Axx21 Coil Series
Original brand	Siemens

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