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.

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Siemens 3RT1955-5AF31-WH Contactor with Removable Coil Operating Mechanism 110-127V AC/DC
Product Positioning

The 3RT1955-5AF31-WH is based on the 3RT1955-5AF31 model and is a replaceable coil operating mechanism used in Siemens SIRIUS large contactors 3RT105 and 3RT145 (S6 frame). It has a rated voltage of 110-127V and supports both AC 50/60Hz and DC operation, featuring a screw terminal design. It should be noted that after consulting Siemens' original database, several major distributors (such as RS Components, Control Parts, Octopart, etc.), and technical catalogs, only complete information on the 3RT1955-5AF31 unit itself was found. Information regarding the official version differences represented by the "-WH" suffix (such as color scheme, packaging, or specific certification versions) was not available. Therefore, this section only faithfully presents the verified specifications of the basic model 3RT1955-5AF31. For the exact definition of the "-WH" suffix, it is recommended to directly consult Kenxin Motors or Siemens to verify, to avoid affecting purchasing decisions.

Core Product Advantages and Features
110-127V AC/DC universal
Rated voltage covers 110-127V, and it supports AC 50/60Hz and DC operation, making it suitable for 110V power grid environments such as North America.
Replaceable coil design
The coil is modularized, allowing for individual replacement in case of failure, eliminating the need to replace the entire S6 frame large contactor body.
Screw terminal wiring
The wiring uses screw terminals, ensuring a secure and reliable connection that meets the long-term usage requirements of industrial distribution boxes.
Applicable to S6 frame contactors
Designed specifically for the 3RT105 and 3RT145 series large contactors, commonly used in motor control centers and heavy-duty switchboards.
project Specification
Product Type Replaceable coil operating mechanism for contactors (incomplete contactor)
Basic Model 3RT1955-5AF31
Applicable contactors SIRIUS 3RT105 and 3RT145 series (S6 frame)
Rated operating voltage AC 110-127V(50/60Hz)/DC 110-127V
Terminal type Screw terminals
Product Lifecycle Mass production underway (according to Octopart data, last updated approximately one month ago).
Import time September 25, 2019 (according to Octopart data)
Environmental compliance RoHS compliant
brand Siemens SIRIUS
Explanation of the "-WH" suffix A review of Siemens' original documentation and catalogs from multiple distributors revealed no independent definition, making it impossible to confirm representative color schemes, packaging, or version differences. It is recommended to contact Kenxin Motor or the original manufacturer for verification.

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