Siemens SIRIUS 3RT1 Power Contactor, 3RT1054-6SF36-3PA0, 115A, 55kW, F-PLC Input, 96-127V AC/DC Coil, Size S6 Original Brand New

Overview

The Siemens 3RT1054-6SF36-3PA0 is a high-performance, 3-pole SIRIUS 3RT1 power contactor designed for reliable switching of motors and other high-current loads up to 115 A (AC-3e/AC-3) and 55 kW at 400 V. This size S6 contactor stands out with its advanced features, including an electronic drive for precise operation and a crucial Fail-Safe F-PLC input (24V DC), making it ideal for safety-relevant applications in industrial automation. Its robust design is part of the globally recognized SIRIUS modular system, ensuring seamless integration and long operational life.

Key Features & Technical Specification

• Product Type: Power Contactor (Motor Switching)
• Series: Siemens SIRIUS 3RT1 (Size S6)
• Article Number: 3RT1054-6SF36-3PA0
• Rated Operational Current (AC-3e/AC-3): $115\text{ A}$
• Rated Power (at 400V): $55\text{ kW}$
• Poles: 3-pole
• Control Voltage (Uc​ – AC/DC): $96-127\text{ V}$ AC (50-60 Hz) / DC (Wide range $\times (0.8-1.1)$)
• Special Feature: Fail-Safe F-PLC input $24\text{ V DC}$ for safe shut-down
• Auxiliary Contacts: $2\text{ NO}+2\text{ NC}$ (Permanently mounted)
• Drive Type: Electronic Drive
• Main Circuit Connection: Busbar connection
• Control/Auxiliary Circuit Connection: Screw terminal

Benefit

• Enhanced Safety: Integrated Fail-Safe F-PLC input ensures safety circuits can reliably control the contactor, complying with modern industrial safety standards (SUVA-certified safety contactor).
• Versatile Control: The wide-range AC/DC control voltage ($96-127\text{ V}$) with electronic drive simplifies installation and reduces inventory, offering consistent performance even with voltage fluctuations.
• High Power Handling: Rated for $115\text{ A}$ and $55\text{ kW}$, making it suitable for heavy-duty motor control applications.
• Durable and Reliable: As part of the SIRIUS family, it offers a long mechanical service life and high operational reliability in demanding industrial environments.
• Easy Integration: Busbar main circuit connections simplify wiring for high-current applications, and screw terminals are used for control/auxiliary circuits for reliable connection.

Function

The 3RT1054-6SF36-3PA0 power contactor is primarily used for switching electric motors in various industrial machines and processes (AC-3/AC-3e duty). Its core function is to allow high-power circuits to be controlled by a low-power signal from a PLC, control switch, or, in this specific model, a Fail-Safe PLC. The $2\text{ NO}+2\text{ NC}$ permanently mounted auxiliary contacts provide necessary feedback and interlocking capabilities for the control system. The electronic drive ensures precise, low-wear switching operations.

Application

• Motor control and switching in safety-relevant machinery
• Industrial automation and control panels
• Pump, fan, and compressor control
• Heating and lighting circuits switching

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