Siemens 3RT2544-1NB30 Power Contactor 65A, 30kW, 4-Pole, AC-3, Integrated Varistor Original Brand New

Overview

The Siemens 3RT2544-1NB30 is a robust, 4-pole power contactor engineered for demanding applications. Part of the SIRIUS family, this Size S3 contactor is rated for 65 A (AC-3) and a power output of 30 kW at 400 V. Its highly versatile control circuit accepts a wide voltage range of 20-33 V AC/DC (50/60 Hz), making it suitable for global and mixed-voltage systems. Designed for maximum protection and reliability, it features an integrated varistor to suppress coil transients, simplifying installation and protecting sensitive control electronics.

Key Features & Benefit

• High Performance: AC-3 rated, 65 A, 30 kW / 400 V for industrial motor control.

• Reliable Contacts: Main contacts: 2 NO + 2 NC; Auxiliary contacts: 1 NO + 1 NC for versatile switching applications.

• Enhanced Protection: Integrated varistor protects against voltage surges and prolongs device life.

• Flexible Operation: Coil voltage: 20-33 V AC/DC, suitable for 50/60 Hz systems.

• Easy Installation: Screw terminals and compact S3 size design for quick setup.

• Durable & Industrial-Grade: Built to withstand heavy-duty electrical environments.

Function

• Switching and controlling AC motors and industrial loads.

• Protecting circuits from overvoltage with the integrated varistor.

• Enabling automation through auxiliary contacts for control circuits.

Application

• Industrial motor control panels

• Automation systems

• Electrical distribution and control

• Manufacturing equipment

Technical Specification

• Model: Siemens 3RT2544-1NB30

• Rated Current: 65 A (AC-3)

• Rated Power: 30 kW / 400 V

• Poles: 4

• Coil Voltage: 20-33 V AC/DC, 50/60 Hz

• Main Contacts: 2 NO + 2 NC

• Auxiliary Contacts: 1 NO + 1 NC

• Terminal Type: Screw

• Size: S3

• Integrated Protection: Varistor

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