Siemens 3RT1055-2AS36 Power Contactor, 150A, 75kW, 500-550V UC Original Brand New

Overview and Technical Specifications

The Siemens 3RT1055-2AS36 power contactor is a high-performance switching device from the SIRIUS 3RT1 series, designed for reliably switching motors and other resistive loads up to 75 kW at 400 V (AC-3/AC-3e). This robust contactor is engineered for use in demanding industrial environments where high current switching is required. The specific version features a versatile control coil that accepts both AC and DC voltage (500-550 V UC), providing exceptional flexibility in control panel design.

Key Features & Benefit

• High Power Rating: Capable of switching currents up to 150 A (AC-3/AC-3e) and motor loads up to 75 kW.
• Flexible Control: Conventional drive with a wide-range 500-550 V UC (AC/DC) coil, reducing inventory and simplifying design.
• Integrated Auxiliary Contacts: Comes standard with 2 NO (Normally Open) + 2 NC (Normally Closed) auxiliary contacts for control and feedback circuits.
• Optimized Main Circuit Connection: Features busbar connection for fast, reliable, and high-power wiring in control panels.
• User-Friendly Control Wiring: Equipped with spring-loaded terminals for control and auxiliary circuits, ensuring vibration-proof, quick, and maintenance-free connections.
• Compact Size S6: Offers high power density in a space-saving industrial footprint.

Function and Application

The Siemens 3RT1055-2AS36 Contactor is primarily used for:

1. Motor Switching: Starting, stopping, and reversing three-phase asynchronous motors in machinery and plant engineering.
2. Load Switching: Controlling resistive and highly inductive loads, such as heating systems, capacitor banks, and lighting systems.
3. Industrial Automation: Serving as a crucial component in control circuits for pumps, fans, conveyors, and more.

This model is a core component in the SIRIUS modular system, allowing seamless integration with overloads, circuit breakers, and other protection devices.

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