Siemens 3RT1456-6AU36 Power Contactor AC-1, 275 A, 690 V, 3-Pole, 240–277 V AC/DC Coil Original Brand New

Overview

The Siemens 3RT1456-6AU36 is a high-performance industrial power contactor engineered for reliable switching of electrical loads in demanding environments. Designed for AC-1 applications up to 275 A and 690 V, this 3-pole contactor offers superior durability and consistent operational safety. Featuring a 240–277 V AC (50/60 Hz) / DC drive, it ensures flexible and efficient integration into modern control systems. With 2NO + 2NC auxiliary contacts, robust busbar main connections, and screw terminals for control circuits, it delivers dependable performance across a wide range of industrial applications.

Benefit

• High Current Handling: Supports up to 275 A at AC-1, ideal for heavy-duty power switching.

• Flexible Coil Voltage: Operates on 240–277 V AC or DC, providing versatile installation options.

• Enhanced Safety: Includes 2 normally open + 2 normally closed auxiliary contacts for reliable monitoring and control.

• Durable & Long-Lasting: Siemens engineering ensures extended service life in harsh industrial conditions.

• Easy Installation: Equipped with busbar main circuit connections and screw-terminal auxiliary connections for quick, secure wiring.

• Optimal for Industrial Control Panels: Perfect for motor control centers, power distribution systems, and automation panels.

Function

• Reliable Power Switching: Designed to control electrical power circuits in AC networks up to 690 V.

• Load Management: Efficiently switches resistive loads under AC-1 utilization category.

• Auxiliary Signaling: Built-in auxiliary contacts enable additional control logic and system feedback.

• Integration with Automation Systems: Suitable for Siemens SIRIUS motor control and power management solutions.

• Robust Coil Drive: AC and DC coil compatibility ensures stable switching performance.

Technical Highlight

• Model: Siemens 3RT1456-6AU36

• Utilization Category: AC-1

• Rated Operational Current: 275 A

• Rated Operational Voltage: 690 V

• Poles: 3-pole

• Coil Voltage: 240–277 V AC (50/60 Hz) / DC

• Auxiliary Contacts: 2 NO + 2 NC

• Main Circuit Connection: Busbar

• Control/Auxiliary Circuit Connection: Screw terminal

• Operating Temperature: Up to 40°C

Application

• Switching resistive loads (e.g., industrial heating systems, furnaces).

• Switching large lighting installations.

• Controlling capacitor banks.

• Main power isolation and switching in electrical distribution panels.

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