3RT1975-5NP31

The 3RT1975-5NP31 is a 24V DC replaceable coil for S12 base large contactors (3RT107 series), with screw terminal design, which is convenient for direct drive by PLC DC control circuits.

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Siemens 3RT1975-5NP31 Replaceable Coil 24V DC for S12 Frame 3RT107 Series

Product Positioning

The 3RT1975-5NP31 is not a complete contactor, but rather a replaceable operating coil used in Siemens SIRIUS S12 frame series large contactors (compatible with models such as 3RT107, 3RT127, and 3RT147), with a rated voltage of 24V DC. Compared to the AC/DC universal coils in the same series, this model is a pure DC specification, making it particularly suitable for direct driving of PLCs or automation systems that use 24V DC as their control power supply. Its pluggable design allows field personnel to replace the coil and troubleshoot without disassembling the entire contactor.

Core Product Advantages and Features

Pure 24V DC specification

The rated control voltage is 24V DC, which is designed for DC control circuits and has high compatibility with PLC output voltage.

Compatible with SIRIUS S12 base

It is compatible with large contactors with S12 bases such as 3RT107, 3RT127, and 3RT147, and is a shared coil spare part for the same platform.

Plug-in replacement design

The coil has a replaceable structure, and can be directly replaced in case of fault or specification change, without having to disassemble the entire contactor body.

Screw terminal wiring

It uses standard screw terminals, and the field wiring and maintenance methods are the same as other SIRIUS accessories.

project	Specification
Product Type	Replaceable coil (switching operating mechanism), incomplete contactor
Rated control voltage	24V DC
Applicable contactor base	S12
Applicable models	3RT107, 3RT127, 3RT147 series
Wiring method	Screw terminals
Reference weight	Approximately 1.04 kg
driving method	DC electronic drive, compatible with PLC output
brand	Siemens
Product Series	SIRIUS 3RT10

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