Siemens SIRIUS 3RT1055-6AB36 Power Contactor, 150A, 75kW, 23-26V AC/DC Coil, Size S6 Original Brand New

Overview

The Siemens SIRIUS 3RT1055-6AB36 is a high-performance 3-pole power contactor from the robust SIRIUS modular system, specifically designed for switching motors and other resistive loads in industrial environments. Engineered for exceptional reliability and long service life, this contacor is rated for 150 A (AC-3e/AC-3) and controls motors up to 75 kW at 400 V. Its versatile conventional drive operates on a wide 23-26 V AC/DC (UC) control supply voltage, simplifying inventory and application across different control systems.

This model is configured with a permanently mounted auxiliary contact block of 2 Normally Open (NO) and 2 Normally Closed (NC) contacts for immediate integration into your control and signaling circuits. The main circuit features robust busbar connections, while the control and auxiliary circuits utilize secure screw terminals. As a Size S6 device, it integrates seamlessly with other SIRIUS components.

Benefits & Advantages

• Global Versatility: The wide-range 23-26V AC/DC (UC) coil reduces part variants and ensures reliable operation across varying control power specifications.
• High Performance: Capable of handling significant loads up to 150A / 75 kW, making it suitable for demanding motor control applications.
• Space-Saving Design (S6): Part of the compact SIRIUS modular system, offering powerful switching in a manageable industrial footprint.
• Integrated Signaling: Factory-fitted with 2 NO + 2 NC auxiliary contacts to simplify wiring for monitoring and interlocking circuits.
• Robust Connectivity: Busbar connection for the main circuit provides a secure and high-current connection solution, ideal for cabinet builders and large panels.
• Safety & Reliability: High contact reliability, long mechanical and electrical service life, and built-in surge suppression (varistor) for the coil.

Typical Function/Application

The Siemens 3RT1055-6AB36 is primarily used for switching and controlling:

• Three-Phase Electric Motors (e.g., pumps, fans, compressors)
• Resistive Loads
• Motor Starters (in combination with an overload relay)
• Heating and Ventilation Systems
• Industrial Machines and Equipment

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