3RT1935-5AG21

The 3RT1935-5AG21 is a 110V AC coil used with Siemens SIRIUS S2 size contactors. It can operate at 50/60Hz, uses screw terminal wiring, and weighs approximately 0.106 kg per unit. It is suitable for the maintenance of existing 3RT10 series S2 size contactors and can be used as a factory spare part and for emergency replacement.

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Close-up of the coil of the Siemens 3RT1935-5AG21 SIRIUS S2 110V contactor.

Product Positioning

The 3RT1935-5AG21 is a 110V AC control coil used in Siemens SIRIUS S2-sized large contactors, specifically designed for maintenance and replacement of existing 3RT10 series production line equipment. This coil is lightweight and compact, allowing it to be directly embedded into the contactor's coil socket without replacing the entire contactor mechanism. It is a practical part for extending the service life of older production lines.

Core Product Advantages and Features

AC110V specification

Rated voltage AC 110V, applicable to both 50Hz and 60Hz dual frequencies, covering most power supply specifications for machines sold in Taiwan and overseas.

Net weight is only 0.106 kg

The coil itself is lightweight, with a net weight of approximately 0.106 kg in the package, making it convenient for single-unit bulk shipping and on-site replacement.

Screw terminal design

The screw terminal connection method simplifies wiring and installation, and on-site maintenance personnel can disassemble and install it themselves.

Corresponding to S2 size contactor

This product is applicable to existing contactor models of the Siemens SIRIUS S2 size 3RT10 series. Please verify the contactor body model before replacement.

Genuine spare parts

The part number is the official spare part number registered by Siemens, not a counterfeit product sold in the market, which can ensure the coil specifications and compatibility.

Kenxin Motor Professional Selection

The authorized agent should assist in confirming the correct coil specifications to avoid the contactor failing to engage properly due to incorrect voltage selection.

project	Specification
Product Name	SIRIUS contactor replacement coil
Applicable size	S2
Rated voltage	AC 110V
Rated frequency	50/60Hz
Connection method	Screw terminals
net weight	Approximately 0.106 kg
Packaging size	Approximately 43×67×118mm
country of origin	Germany
brand	Siemens SIRIUS

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3RT1935-5AD21

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3RT1935-5AC21

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