Siemens 3RT1055-6AB36-3PA0 SIRIUS Power Contactor, 150A, 75kW, 24V UC Original Brand New

Overview

The Siemens 3RT1055-6AB36-3PA0 is a high-performance SIRIUS series power contactor designed for switching motors up to 75 kW at 400 V (AC-3e/AC-3). This robust, 3-pole contactor is rated for a maximum load current of 150 A. It features a highly versatile AC (50-60 Hz) / DC operating coil with a wide control voltage range of 23-26 V UC (Universal Control), which simplifies procurement and spares.

The contactor is a Size S6 unit and comes with a permanently mounted 2 NO + 2 NC auxiliary switch block, providing reliable signaling and control circuit integration. Main circuit connection is via busbar, ideal for larger panels, while the control and auxiliary circuits use secure screw terminals. This conventional drive design ensures proven reliability for demanding industrial applications.

Benefit

• High Performance: Safely switch high-power motors up to 75 kW, ensuring long-term operational stability.
• Universal Flexibility: The 23-26V UC (AC/DC) coil minimizes inventory and offers design flexibility across different voltage standards.
• Integrated Design: Comes standard with a permanently mounted 2 NO + 2 NC auxiliary switch, saving installation time and simplifying ordering.
• Space-Saving: The SIRIUS S6 frame size offers a high power-to-size ratio, optimizing panel space.
• Reliable Connections: Features busbar connections for the main circuit and screw terminals for control circuits, facilitating secure and robust wiring.
• Industrial Standard: Part of the proven Siemens SIRIUS family, ensuring quality, reliability, and full compliance with international standards (e.g., IEC 60947).

Application

The Siemens 3RT1055-6AB36-3PA0 is primarily used in industrial automation and control systems for switching 3-phase AC motors. Typical applications include:

• Direct-on-line (DOL) starting of motors.
• Controlling large industrial machines (pumps, ventilation systems, conveyor belts).
• Integration into complex motor control centers (MCCs).

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