Siemens SIRIUS 3RT1055-6LA06 Power Contactor Size S6, 150 A, 75 kW, 3-Pole, Busbar Original Brand New

Overview: Siemens 3RT1055-6LA06 SIRIUS Contactor

The Siemens SIRIUS 3RT1055-6LA06 Power Contactor is a high-performance, 3-pole switching device from the SIRIUS modular system, specifically engineered for switching motors and industrial loads up to 75 kW at 400 V (AC-3e/AC-3). Designed for reliable operation in demanding environments, this Size S6 Contactor offers a robust solution for load feeders.

This particular model is supplied without an operating mechanism (coil), allowing users to select the appropriate control voltage coil separately for flexibility (e.g., AC or DC control). The main circuit features busbar connections for quick, secure integration into power distribution systems, while the control and auxiliary circuits utilize dependable screw terminals.

Key Technical Specifications

• Product Type: Power Contactor (Motor Starter Component)
• Siemens MLFB: 3RT1055-6LA06
• Size: S6
• Rated Operational Current (AC-3e/AC-3): 150 A
• Rated Operational Power (at 400 V): 75 kW
• Poles: 3-Pole
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed)
• Coil/Operating Mechanism: Supplied without coil (requires separate order)
• Main Circuit Connection: Busbar
• Control/Auxiliary Circuit Connection: Screw Terminals

Benefits & Features

• High Reliability: Part of the trusted Siemens SIRIUS modular system, offering high contact reliability and a long mechanical service life.
• Integrated Design: Comes with pre-installed auxiliary switches (2 NO + 2 NC) to reduce design and wiring complexity.
• Global Standard Compliant: Climate-resistant and approved for worldwide use (IEC, UL/CSA), making it suitable for international applications.
• IE3/IE4 Ready: Optimized for use with modern, energy-efficient IE3/IE4 standard motors.
• Flexible Integration: Modular design allows for combination with a wide range of other SIRIUS components in the load feeder.

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