Siemens 3RT1076-2AF36 Power Contactor 500A, 250kW, 110-127V AC/DC Control, Busbar, Spring-Loaded Terminals Original Brand New

Overview: Siemens 3RT1076-2AF36 Power Contactor

The Siemens 3RT1076-2AF36 is a high-performance 3-pole power contactor engineered for demanding industrial applications. As a key component in motor control and switching systems, this contactor is rated for AC-3e/AC-3 operation, handling currents up to 500A and power up to 250 kW at 400V. Its versatility is enhanced by a wide control voltage range of 110-127V AC/DC, making it suitable for a variety of power systems.

Designed for reliability and ease of use, the 3RT1076-2AF36 features a conventional drive and a robust main circuit connection via busbar, ensuring high current capacity and secure power distribution. The control and auxiliary circuits utilize convenient spring-loaded terminals, which provide fast, vibration-proof connections without the need for tools.

This model is equipped with a comprehensive auxiliary contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, allowing for flexible integration into complex control and signaling circuits. The Siemens SIRIUS 3RT series is renowned for its durability, compact design, and exceptional performance, making the 3RT1076-2AF36 an excellent choice for modern industrial automation.

Key Benefit

• High Current & Power Capacity: Rated for 500A (AC-3e/AC-3) and 250 kW at 400V, ideal for controlling large motors and high-power loads.
• Flexible Control Voltage: Operates on a wide 110-127V AC/DC voltage range, simplifying integration into different electrical systems.
• Secure & Efficient Connections: Busbar main circuit for robust high-current connections and spring-loaded terminals for fast, reliable wiring of control circuits.
• Enhanced Functionality: Includes 2 NO + 2 NC auxiliary contacts for versatile monitoring and control applications.
• Durable & Reliable: Part of the trusted Siemens SIRIUS 3RT series, known for its long service life and performance in harsh industrial environments.
• Optimized for Space: Compact design helps to save valuable panel space.

Function

The Siemens 3RT1076-2AF36 power contactor serves as an electrically operated switch, primarily used for remotely controlling and switching a motor, heating element, or other high-power electrical loads. When the control voltage (110-127V AC/DC) is applied to the coil, it creates a magnetic field that pulls the main contacts together, closing the circuit and allowing power to flow to the load.

The auxiliary contacts change their state simultaneously, providing feedback and enabling interlocking functions within a control circuit. The design of the main circuit allows for direct connection to busbar systems, simplifying installation in large power distribution setups.

Technical Specification

• Product Number: Siemens 3RT1076-2AF36
• Product Type: Power Contactor
• Main Circuit: 3-pole
• Operating Current (AC-3e/AC-3): 500 A
• Operating Power (AC-3e/AC-3): 250 kW at 400 V
• Control Voltage (Uc): 110-127 V AC (50-60 Hz) / DC
• Auxiliary Contacts: 2 NO + 2 NC
• Drive Type: Conventional
• Main Circuit Connection: Busbar
• Control & Auxiliary Circuit Connection: Spring-loaded terminal

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