Siemens Contactor AC-3, 18A/7.5kW, 400V, 2NO2NC, AC 400V, 50Hz, size S0 Original Brand New

Overview: Siemens 3MT8018-1AV04 AC-3 Contactor with 400V Coil

The Siemens 3MT8018-1AV04 is a high-quality AC-3 contactor specifically engineered for reliable switching of motors and inductive loads in a wide range of industrial and commercial applications. This robust 3-pole contactor, in size S0, is a fundamental component for efficient motor control circuits, ensuring stable and safe operation. Designed for 400V main circuits, it effectively handles currents up to 18 Amperes and power ratings of 7.5kW. A distinguishing feature of this model is its AC 400V control coil, which simplifies wiring in systems where the control voltage matches the main supply. The 3MT8018-1AV04 integrates seamlessly into various control panels, making it an excellent choice for new installations or system upgrades across Indonesia.

Key Features & Specification

• Model: Siemens 3MT8018-1AV04
• Contactor Type: AC-3 (optimized for making, breaking, and occasional starting of squirrel-cage motors)
• Rated Current: 18 Amperes (A)
• Rated Power: 7.5 Kilowatts (kW) at 400V
• Rated Operational Voltage (Main Circuit): 400 Volts (V) AC
• Auxiliary Contacts: 2 Normally Open (NO) + 2 Normally Closed (NC) for versatile control circuit integration, status feedback, and interlocking capabilities.
• Control Coil Voltage: AC 400V (50 Hz) – a key feature for direct integration with 400V control signals.
• Poles: 3-pole configuration, ideal for three-phase motor applications.
• Size: S0 (Standard industrial size for this current range, offering a compact footprint)
• Terminals: Secure screw terminal connections for straightforward and reliable wiring.
• Durability: Manufactured by Siemens, ensuring long service life and high operational reliability even in demanding industrial environments.

Function & Application

The Siemens 3MT8018-1AV04 Contactor acts as a crucial electromagnetic switch, enabling remote and automated control of power flow to electrical equipment. Its primary function is to safely and efficiently establish or interrupt electrical connections in main power circuits, typically for starting, stopping, and protecting industrial motors, heating elements, and lighting systems. The specific 400V AC control coil makes this contactor particularly suitable for applications where a common supply voltage for both power and control is desired, simplifying system design and reducing wiring complexity.

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