Siemens 3RT1054-1AS36 Power Contactor, 115A, 55kW, 500-550V AC/DC, SIRIUS S6 Original Brand New

Overview: Siemens SIRIUS 3RT1054-1AS36 Power Contactor

The Siemens 3RT1054-1AS36 is a robust and reliable 3-pole Power Contactor from the SIRIUS 3RT10 series, engineered for switching motors and industrial loads up to 55 kW / 400 V (AC-3e/AC-3). With a rated operational current of 115 A, this high-performance contactor is suitable for demanding industrial applications, offering exceptional longevity and operational safety.

A key feature is its versatile control coil, operating on a wide voltage range of Uc​: 500-550 V AC (50-60 Hz) / DC, making it highly adaptable to various control system requirements. It is supplied with integral 2 NO + 2 NC auxiliary contacts for monitoring and interlocking circuits, providing a comprehensive switching solution right out of the box.

Benefit

1. High Performance & Reliability: Rated for the new AC-3e/AC-3 category, ensuring safe and efficient switching of IE3/IE4 generation motors and high-current inductive loads.
2. Versatile Control: The wide-range Uc​ coil (500-550 V AC/DC) simplifies stock management and ensures reliable operation across varying control voltages.
3. Space Efficiency: Part of the modular SIRIUS system, allowing for compact panel design and seamless integration with other SIRIUS components.
4. Integrated Signaling: Factory-fitted with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, saving time and cost on mounting separate auxiliary blocks.
5. Robust Connectivity: Features high-capacity Box Terminals for the main power circuit and reliable Screw Terminals for control/auxiliary wiring.

Function

The Siemens 3RT1054-1AS36 is primarily used for electrically switching motors and resistive loads in industrial control and automation systems. Its function involves:

• Switching: Safely and reliably making and breaking the main circuit connection to the load.
• Motor Control: Ideal for use in motor starters (Direct-on-Line, Reversing) up to 55 kW.
• Interlocking and Signaling: The integrated auxiliary contacts (2 NO + 2 NC) are used to signal the contactor status to PLCs or other control devices, and to implement safety interlocks in reversing or star-delta circuits.

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