3RT1944-5AG21

Replacement coils for Siemens SIRIUS large contactors, compatible with the 3RT1044 series S3 size contactors. The voltage code is consistent with the 110V specification coils of the same series. Screw terminal wiring. Suitable as a factory backup spare part. It is still recommended to confirm the nameplate information with Kenxin Motor before placing an order to ensure that the actual voltage is correct.

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Siemens 3RT1944-5AG21 SIRIUS S3 contactor coil 110V

Product Positioning

The 3RT1944-5AG21 belongs to the Siemens SIRIUS large series S3 size contactor coil family. Like the 3RT1944-5AC21, it is a dedicated replacement part for the 3RT1044 contactor, differing only in the coil voltage code. These coils typically use screw terminals for easy replacement by field personnel. Since a separate publicly available specification page for this model is unavailable, Kenxin Motor recommends providing the contactor's nameplate information for final confirmation before placing an order.

Core Product Advantages and Features

Replacement coils in the same series

Like the 3RT1944-5AC21, it belongs to the 3RT1044 contactor coil family, with high specification continuity.

Voltage code AG21

According to Siemens naming conventions, this corresponds to an AC 110V, 50/60Hz control power supply.

Screw terminal wiring

Easy to quickly disassemble and replace on site

Applicable to large S3 contactors

Designed specifically for the 3RT1044 series high current contactors

Confirmation before selection

Kenxin Motors provides selection consultation and assists in verifying the contactor nameplate and coil voltage.

project	Specification
Product Type	SIRIUS Large Contactor Replacement Coil
Applicable contactor series	3RT1044 (S3 size)
Coil voltage code	5AG21
Corresponding voltage (according to series naming conventions)	AC 110V, 50/60Hz
Wiring method	Screw terminals
Contactor size	S3
Remark	Please confirm the actual listed voltage for this model before placing your order.

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