3RT1955-5NP31
The Siemens SIRIUS S6 frame large contactor features an electronically removable operating coil, compatible with AC/DC 200~277V, and supports direct drive from 24VDC PLC signals. It is suitable as a replacement part for 3RT105 and 3RT145 series contactors.
Product Positioning
The 3RT1955-5NP31 is an electronic retractable operating mechanism designed by Siemens for large contactors (3RT105, 3RT145 series) of S6 frame. The rated voltage covers AC and DC 200~277V, and it can be directly driven by the PLC output point with a 24VDC signal, eliminating the need for an additional intermediate relay. It is a common replacement coil specification when updating and upgrading automation control panels.
Core Product Advantages and Features
Electronic drive design
Built-in electronic circuitry allows direct acceptance of 24VDC PLC output signals for driving, eliminating the need for intermediate relays.
AC/DC wide voltage range
Rated operating voltage covers AC/DC 200~277V, suitable for various power supply environments.
Extraction structure
The coil is designed for easy replacement, allowing for on-site replacement without disassembling the entire contactor unit.
Screw terminal connection
The wiring method uses traditional screw terminals, which are familiar and convenient for both installation and maintenance.
Applicable to large contactors
Corresponding to the operating mechanism of S6 frame series contactors such as 3RT105 and 3RT145
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3RT1955-5NB31
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3RT1955-5AR31
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