Siemens, 3RT1055-6AR36, power contactor, 150A, 75kW, 400V, AC/DC coil 440-480V, 3-pole Original Brand New

Overview

The Siemens SIRIUS 3RT1055-6AR36 is a high-performance 3-pole power contactor from the globally recognized SIRIUS line, engineered for efficient switching of motors and other industrial loads. Rated for 150 Amperes (AC-3e/AC-3) and capable of handling up to 75 kW at 400 V, this Size S6 contactor is ideal for demanding industrial applications.

It features a versatile 440-480 V UC (AC/DC) operating coil, providing flexibility for different control voltages. Designed for simple and robust integration, the main circuit uses busbar connections, while the control and auxiliary circuits utilize reliable screw terminals.

Key Specifications & Function

• Product Number: 3RT1055-6AR36 (SIRIUS 3RT1 Contactor)
• Contactor Size: S6 (High-capacity industrial size)
• Poles: 3-Pole
• Rated Operational Current (Ie): 150 A (AC-3e/AC-3)
• Rated Power: 75 kW at 400 V
• Coil/Drive Voltage (Uc): 440-480 V AC (50-60 Hz) / DC (Universal Control)
• Auxiliary Contacts: Integrated 2 NO + 2 NC (Normally Open + Normally Closed)
• Main Circuit Connection: Busbar connection
• Control/Auxiliary Connection: Screw terminals
• Application: Switching 3-phase motors and high-current loads.

Benefit

• High Performance: Safely switches high currents up to 150A and large motors up to 75kW, ensuring reliable operation in heavy-duty applications.
• Universal Control: The wide-range 440-480V UC coil simplifies inventory and maintenance, as it functions with both AC and DC control voltages.
• Durable & Reliable: Part of the trusted Siemens SIRIUS family, designed for long mechanical and electrical service life (typically 10 million operating cycles).
• Easy Integration: Features busbar main circuit connection for quick and robust installation into power distribution systems and control panels.
• Enhanced Control: The built-in 2 NO + 2 NC auxiliary contacts provide ample interface points for interlocking, signaling, and complex control circuit requirements.

Application

The 3RT1055-6AR36 contactor is perfectly suited for controlling:

• Large 3-phase AC motors (e.g., pumps, compressors, conveyors)
• Heating systems and resistive loads
• Switching capacitor banks
• Industrial lighting circuits

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