3RT1955-5AB31

The 3RT1955-5AB31 is a 24V removable coil operating mechanism for the S6 frame 3RT105/3RT145 contactor. It is rated for 23-26V AC/DC universal, weighs approximately 0.59 kg, and is made in Germany.

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Siemens 3RT1955-5AB31 Contactor with Removable Coil Operating Mechanism 23-26V AC/DC

Product Positioning

The 3RT1955-5AB31 is a replaceable coil operating mechanism specifically designed for Siemens SIRIUS large power contactors 3RT105 and 3RT145 (S6 frame). The original German catalog designation is "Wechselantrieb für Schütze" (Wechselantrieb für Schütze). It has a rated voltage of 23-26V (24V class) and supports both AC 50/60Hz and DC operation. It features a standard energy-saving circuit design with screw terminals, weighs approximately 0.59 kg, and its customs tariff code is 85045000. It is manufactured in Germany. 24V is a very common voltage level in control circuits, making this product suitable for coil maintenance and replacement in existing 24V control systems without requiring the complete replacement of the S6 frame large contactor.

Core Product Advantages and Features

24V AC/DC coil

With a rated voltage of 23-26V (24V class), it supports both AC 50/60Hz and DC operation, making it one of the most common voltage versions in control circuits.

Standard power-saving circuit

It adopts a power-saving design to reduce power consumption and heat generation during the coil holding stage, thus extending its service life.

Replaceable coil module

The coil can be replaced independently, eliminating the need to replace the entire S6 frame large contactor in case of failure, thus saving on spare parts and maintenance labor costs.

Made in Germany, with multiple compliance declarations

Made in Germany, with EMV conformity declaration, general product approval, and compliant with RoHS environmental directive.

project	Specification
Product Type	Replaceable coil operating mechanism for contactors (incomplete contactor)
Applicable contactors	SIRIUS 3RT105 and 3RT145 series (S6 frame)
Rated operating voltage	AC 23-26V (50/60Hz) / DC 23-26V
Operating mechanism type	Standard, energy-saving type (Sparschaltung)
Terminal type	Screw terminals
net weight	Approximately 0.587-0.59 kg
Customs Tariff Number	85045000
Place of origin	Germany
Compliance Statement	EMV Declaration of Conformity, General Product Approval, UK Declaration of Conformity
Environmental compliance	RoHS compliant
brand	Siemens SIRIUS

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