Siemens 3RT1054-1NF36 Power Contactor, 115A, 55kW, 96-127V Original Brand New

Overview

The Siemens SIRIUS 3RT1054-1NF36 power contactor is a high-performance electromechanical switching device designed for controlling motors and other resistive loads in industrial applications. Part of the proven SIRIUS modular system, this contactor is rated for AC-3e/AC-3 operation at 115 A and is suitable for motors up to 55 kW at $400\text{ V}$.

Its advanced design features an electronic drive for precise and reliable switching, along with a wide control voltage range of $\text{Uc}:\text{96-127 V AC (50-60 Hz) / DC}$. A key feature is the integrated PLC input for $24\text{ V DC}$, allowing for direct and efficient interfacing with modern programmable logic controllers.

Benefit

• Optimized PLC Integration: The dedicated 24 V DC PLC input eliminates the need for intermediate coupling relays, saving space, reducing wiring, and lowering overall system costs.
• High Power Density: Part of the modular SIRIUS system, the S6 size delivers 115A / 55kW performance in a compact footprint.
• Flexible Universal Control: The wide-range 96-127 V UC (AC/DC) electronic coil supports various global power grids, simplifying inventory and application.
• Enhanced Reliability: Pre-installed $2\text{ NO}+2\text{ NC}$ auxiliary contacts offer immediate access to status feedback and interlocking functions.
• IE3/IE4 Ready: Designed to be highly efficient and compatible with the latest generation of high-efficiency IE3/IE4 motors.

Function & Application

The 3RT1054-1NF36 functions as a motor contactor, primarily used for switching three-phase motors in various industrial settings. Its robust design is ideal for:

• Direct-on-line (DOL) starting of motors.
• Controlling pumps, fans, compressors, and conveyors.
• Integration into automated systems and control panels demanding high switching capacity and direct PLC communication.

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