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Siemens 3RT2046-1KB44-3MA0 24V DC Contactor w/Captive Aux

Siemens 3RT2046-1KB44-3MA0 95A 3-pole DC contactor w/captive aux.

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ManufacturerSiemens

Part number3RT2046-1KB44-3MA0

Type Power Contactor

Poles 3

AC-3e/AC-3 Rating 95A

Power 45 kW @ 400V

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Veteran-owned

CAGE: 9NK75

24V DC coil Integrated varistor Captive auxiliary switch Suitable for PLC outputs 1 NO + 1 NC auxiliary contacts Size S3

Product description

The Siemens 3RT2046-1KB44-3MA0 is a 3-pole power contactor for AC-3e/AC-3 use, rated at 95 Amps and 45 kW at 400 Volts. It operates with a 24 Volt DC coil (0.8-1.2* Uc) and includes an integrated varistor for surge protection. This Size S3 contactor features 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, screw terminals, and a captive auxiliary switch, making it ideal for PLC outputs.

This contactor is specifically designed for applications requiring direct control from PLC outputs, such as in automated manufacturing, robotics, and complex machinery control. The captive auxiliary switch ensures a secure connection and reliable operation.

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Technical specifications

Type	Power Contactor
Poles	3
AC-3e/AC-3 Rating	95A
Power	45 kW @ 400V
Coil Voltage	24V DC
Uc Range	0.8-1.2* Uc
Auxiliary Contacts	1 NO + 1 NC
Integrated Varistor	Yes
Terminal Type	Screw
Size	S3
Captive Auxiliary Switch	Yes
PLC Output Compatible	Yes

Common applications

PLC controlled automation

Manufacturing lines

Robotics

Machine control

Industrial automation

Process control

Compatible systems

PLCs with 24V DC outputs Automation control panels Industrial machinery Robotics controllers

Also known as

Siemens 3RT2046-1KB44-3MA0 Contactor 3RT2046 DC Contactor Siemens Captive Aux Contactor S3 DC Contactor

Replaces / compatible with

This model is designed for applications requiring a DC-powered contactor with a captive auxiliary switch for enhanced reliability in PLC-driven systems.

Technical note

Expert tip

The captive auxiliary switch on the 3RT2046-1KB44-3MA0 is factory-fitted and provides a secure connection for critical control signaling in PLC applications.

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Frequently asked questions

What is the benefit of a captive auxiliary switch on the Siemens 3RT2046-1KB44-3MA0?

The captive auxiliary switch on the Siemens 3RT2046-1KB44-3MA0 ensures a more robust and reliable electrical connection compared to plug-in types. This design minimizes the risk of intermittent connections in demanding industrial environments.