Siemens 3RT1075-2AB36 SIRIUS Power Contactor, 400A, 200 kW, 23-26V AC/DC, Spring-Loaded Terminals, Size S12 Original Brand New

Overview

The Siemens 3RT1075-2AB36 is a robust, 3-pole SIRIUS power contactor designed for reliably switching motors and other loads up to 400 A (AC-3e/AC-3) and 200 kW at $400\text{ V}$. Part of the highly efficient and modular SIRIUS industrial control system, this contactor offers exceptional performance in a compact design (Size S12). It is engineered for universal control applications with an operating voltage (Uc) of $23\text{ V}-26\text{ V}$ AC/DC, allowing for flexible integration into various systems.

Key Specifications / Technical Detail

• Product Type: Power Contactor (SIRIUS 3RT10 Series)
• Siemens MLFB: 3RT1075-2AB36
• Poles: 3-pole
• Rated Operational Current (Ie): $400\text{ A}$ (AC-3e/AC-3)
• Rated Power (P): $200\text{ kW}$ at $400\text{ V}$
• Coil Control Voltage (Uc): $23\text{ V}-26\text{ V}$ AC $(50-60\text{ Hz})/\text{DC}$ (Wide range)
• Auxiliary Contacts: $2\text{ NO}+2\text{ NC}$ (Pre-installed)
• Drive Type: Conventional
• Main Circuit Connection: Busbar connection
• Control/Auxiliary Circuit Connection: Spring-loaded terminal (for fast, vibration-proof wiring)
• Contactor Size: S12

Benefits & Advantages

• High Performance: Capable of handling significant loads up to 400A and 200kW, suitable for demanding motor control applications.
• Universal Control: Wide operating range coil ($23-26\text{ V}$ AC/DC) simplifies stock-keeping and provides flexibility for diverse control systems, including PLC direct input.
• Fast & Secure Wiring: The spring-loaded terminals for the control and auxiliary circuits ensure quick, reliable, and maintenance-free connections, especially crucial in high-vibration environments.
• Integrated Monitoring: Comes with pre-installed $2\text{ NO}+2\text{ NC}$ auxiliary contacts for status feedback and interlocking.
• Modular SIRIUS System: Seamlessly integrates with a wide range of accessories and components from the Siemens SIRIUS modular system (e.g., overload relays, auxiliary switches).
• Busbar Connection: Main circuit connections via busbar for simple, high-current power distribution and integration into switchgear assemblies.

Application

The 3RT1075-2AB36 is the ideal choice for switching 3-phase AC motors and other inductive or resistive loads in:

• Heavy-duty machinery and equipment
• Industrial pump and fan control
• Large conveyor systems
• Switchgear and control panels
• Any industrial application requiring reliable, high-current switching and motor protection (when combined with an overload relay).

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