Siemens 3MT8120-1AQ07 AC-3 Power Contactor 120A, 55kW, 400V Original Brand New

Siemens 3MT8120-1AQ07 AC-3 Power Contactor – Heavy Duty 120A, 55kW Motor Control

Overview

Siemens 3MT8120-1AQ07 Contactor is a high-performance, 3-pole electrical contactor specifically engineered for the most demanding industrial power switching applications. Categorized under AC-3 utilization, this contactor is ideally suited for reliably switching squirrel-cage motors with power ratings up to 55 kW at 400V. With a substantial 120A current handling capacity, the Siemens 3MT8120-1AQ07 Contactor is an essential component for heavy-duty machinery, ensuring robust and efficient control in critical industrial processes. Its S6 size indicates a powerful yet compact solution for significant electrical loads.

Function

The primary function of the Siemens 3MT8120-1AQ07 Contactor is to act as an electrically operated switch, enabling the safe and efficient connection or disconnection of electrical power to large three-phase loads, typically industrial motors. Activated by a powerful 380VAC, 50 Hz control coil, the contactor’s main poles close, allowing current to flow. The comprehensive integrated 4 Normally Open (4NO) and 4 Normally Closed (4NC) auxiliary contacts provide extensive flexibility for intricate control circuits, interlocks, and status signaling, significantly enhancing both operational safety and automation capabilities. Reliable screw terminals ensure robust and simple wiring connections, crucial for industrial environments.

Key Features:

• High Current & Power Rating: Designed for AC-3 operation, handling up to 120 Amps or 55 kW at 400 Volts.
• Robust 3-Pole Design: Ensures stable and reliable switching for heavy-duty three-phase power systems.
• Extensive Auxiliary Contacts: Includes 4 Normally Open (4NO) and 4 Normally Closed (4NC) contacts for advanced control, interlocking, and comprehensive feedback.
• Standard Industrial Control Voltage: Operates with a 380V AC, 50Hz control coil, common in many industrial systems.
• Heavy-Duty S6 Size: Provides significant power capacity in a durable frame, optimized for demanding applications.
• Secure Connection: Equipped with sturdy screw terminals for reliable, high-integrity wiring.
• Uncompromising Siemens Quality: Built to Siemens’ rigorous engineering standards, ensuring long-term reliability and performance in harsh industrial environments.
• Broad Application Scope: Ideal for starting and stopping large motors, controlling heating elements, and managing other significant power circuits in heavy industries, manufacturing, and automation.

Technical Specifications:

• Product Model: Siemens 3MT8120-1AQ07
• Utilization Category: AC-3
• Rated Operational Current (Ie): 120 A (at 400V)
• Rated Operational Power (Pe): 55 kW (at 400V)
• Rated Operational Voltage: 400 V
• Control Supply Voltage: 380 V AC, 50 Hz
• Number of Poles: 3-pole
• Auxiliary Contacts: 4 NO + 4 NC
• Size: S6
• Terminal Type: Screw Terminal

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