Siemens SIRIUS 3RT1075-2NB36 Power Contactor 400A, 200kW, Busbar, Spring-Loaded Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT1075-2NB36 is a high-performance, 3-pole power contactor designed for demanding industrial applications. Engineered for reliability and efficiency, this contactor is part of the renowned SIRIUS family, offering a robust solution for switching and controlling power circuits.

With an impressive AC-3e/AC-3 rating of 400 A and a power handling capacity of 200 kW at 400 V, it is ideal for heavy-duty motor control and other high-current loads. Its innovative electronic drive, versatile control voltage range (21-27.3 V AC/DC) with a dedicated 24 V DC PLC input, and flexible connection options make it a top choice for modern automation systems.

Key Benefit

• High Performance: Handles a substantial 400 A current and 200 kW power, suitable for large motors and industrial machinery.
• Versatile Control: Features an electronic drive that accommodates a wide AC/DC control voltage range, including a specific 24 V DC input for direct PLC integration, simplifying wiring and reducing control cabinet space.
• Space-Saving Design: The compact 3-pole configuration and integrated auxiliary contacts (2 NO + 2 NC) minimize the need for external components.
• Reliable Connections: Main circuit busbar connections ensure robust, high-current conductivity, while spring-loaded terminals for control and auxiliary circuits provide fast, vibration-proof, and maintenance-free wiring.
• Enhanced Safety & Efficiency: Part of the trusted Siemens SIRIUS line, this contactor provides dependable switching, protecting equipment and optimizing operational efficiency.

Technical Specification

• Product Number: 3RT1075-2NB36
• Type: Power Contactor
• Product Series: Siemens SIRIUS 3RT1
• Poles: 3-pole
• AC-3e/AC-3 Rating: 400 A
• Rated Power (400 V): 200 kW
• Control Voltage (Uc): 21-27.3 V AC/DC
• PLC Input: 24 V DC
• Drive: Electronic
• Auxiliary Contacts: 2 NO + 2 NC
• Main Circuit Connection: Busbar
• Control/Auxiliary Circuit Connection: Spring-loaded terminal

Function

The Siemens 3RT1075-2NB36 contactor serves as a crucial component in industrial control systems. Its primary functions include:

• Motor Control: Effectively switches large three-phase motors on and off.
• Load Switching: Manages the switching of high-current resistive and inductive loads.
• Automation Integration: The 24 V DC PLC input allows for seamless integration with programmable logic controllers for automated and remote operation.
• Safety Interlocking: The integrated auxiliary contacts (2 NO + 2 NC) can be used for feedback signals, interlocking circuits, and safety functions within the control system.

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