3RT1955-5AM31

The 3RT1955-5AM31 is an S6 frame 3RT105/3RT145 contactor with a removable coil operating mechanism. It operates on AC/DC voltages of 200-240V. It is recommended to use a No. 2 Phillips head screwdriver for installation.

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Siemens 3RT1955-5AM31 Contactor with Removable Coil Operating Mechanism 200-240V AC/DC

Product Positioning

The 3RT1955-5AM31 is a replaceable coil operating mechanism used in Siemens SIRIUS large contactors 3RT105 and 3RT145 (S6 frame). It is positioned as a maintenance spare coil rather than a complete contactor. According to the distributor's information, this product has an AC/DC operating voltage of 200-240V, a slightly wider range than the 5AP31 in the same series (220-240V), allowing users to stably start and stop the large contactor even in environments with slight power voltage fluctuations. During installation, it is recommended to use a No. 2 Phillips head screwdriver to secure the coil, facilitating quick replacement by field maintenance personnel without disassembling the entire S6 frame contactor body.

Core Product Advantages and Features

200-240V wide voltage range

The AC/DC operating voltage ranges from 200-240V, which is wider than some models in the same series, and it is more adaptable to power fluctuations.

Replaceable coil module

With its independently replaceable design, only the coil needs to be replaced in case of failure, rather than replacing the entire S6 frame large contactor.

Suitable for installation with a No. 2 Phillips screwdriver

The manufacturer recommends using a Pozidriv #2 screwdriver for installation and disassembly, and that the process be standardized.

Designed specifically for S6 frame contactors

When used in conjunction with 3RT105 and 3RT145 series contactors, it is suitable for heavy-duty switching applications such as motor control centers.

project	Specification
Product Type	Replaceable coil operating mechanism for contactors (incomplete contactor)
Applicable contactors	SIRIUS 3RT105 and 3RT145 series (including 3RT1054-6AM36/3RT1055-6AM36/3RT1056-6AM36)
Rated operating voltage	AC/DC 200-240V
Recommended installation tools	Pozidriv #2 Phillips screwdriver
brand	Siemens SIRIUS
Applicable product lines	S6 frame large power contactor repair spare parts
Remark	Public information for this model is relatively limited; details such as net weight and packaging dimensions could not be found on the manufacturer's independent catalog page. For complete specifications, please contact Kenxin Motor for confirmation.

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3RT1955-5AP31

The 3RT1955-5AP31 is a removable coil operating mechanism for the S6 frame 3RT105/3RT145 contactor. It is rated for 220-240V AC/DC universal, weighs approximately 0.546 kg, and has obtained multiple certifications including CSA, UL, EAC, and RCM.

3RT1955-5AF31-WH

The 3RT1955-5AF31-WH basic model is an S6 frame contactor with a removable coil operating mechanism, suitable for AC/DC operation from 110-127V. The meaning of the "-WH" suffix is currently unconfirmed; it is recommended to contact Kenxin Motor for verification.

3RT1955-5AF31

The 3RT1955-5AF31 is a removable coil operating mechanism for the S6 frame 3RT105/3RT145 contactor. It is rated for 110-127V AC/DC universal, entered mass production in 2019, and complies with RoHS environmental directives.