Siemens 3RT1076-2AU36 SIRIUS 3RT1 Power Contactor 500A, 250kW, 3-Pole, 240-277V AC/DC Coil, Busbar/Spring-Loaded Original Brand New

Overview

The Siemens 3RT1076-2AU36 is a heavy-duty, 3-pole SIRIUS 3RT1 power contactor engineered for reliable and efficient switching of high-power industrial loads, particularly large AC motors. Rated for $500\text{ A}$ (AC-3e/AC-3) and a power output of $250\text{ kW}$ at $400\text{ V}$, this contactor is built to handle the most demanding industrial automation and motor control applications.

It features a versatile conventional drive with a wide 240-277 V AC/DC control voltage range, offering maximum flexibility in control system integration. The main circuit uses robust busbar connections for high current distribution, while the control and auxiliary circuits utilize convenient, reliable spring-loaded terminals.

Benefit

• Exceptional Power Handling: With a $500\text{ A}$ current rating and $250\text{ kW}$ capacity, it is ideal for controlling large, high-power motors and industrial equipment.
• High Flexibility: The $240\text{ V}-277\text{ V}$ AC/DC conventional coil allows for broad application across various international and domestic power standards.
• Robust & Secure Main Circuit: Busbar connections ensure a reliable, high-integrity power connection, reducing installation time and improving safety for high-current wiring.
• Vibration-Proof Wiring: Spring-loaded terminals for the control and auxiliary circuits provide fast, secure, and maintenance-free connections that resist loosening from vibration.
• Integrated Monitoring: Features $2\text{ NO}+2\text{ NC}$ auxiliary contacts for essential status feedback and complex interlocking in automation systems.

Function

The Siemens 3RT1076-2AU36 power contactor functions as an electrically operated switch, primarily used for remotely and safely making or breaking an electrical circuit, typically to control high-power loads like electric motors. It is a critical component in Motor Control Centers (MCCs), industrial panels, and heavy machinery.

Application

• Direct-on-line (DOL) start/stop control for large $250\text{ kW}$ motors.
• Switching resistive loads, transformers, and capacitor banks.
• Integration into complex industrial automation systems and processes requiring reliable high-current switching.

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