Siemens 3MT8018-1AF04 Contactor AC-3, 18A, 7.5kW, 400V, 2NO+2NC, 110V AC Coil, S0 Size Original Brand New

Overview

The Siemens 3MT8018-1AF04 is a high-performance AC-3 contactor meticulously engineered for reliable switching of inductive loads, particularly squirrel-cage motor. This robust S0 size contactor boasts a current rating of 18A for AC-3 applications and is capable of handling motor up to 7.5 kW at 400V. Featuring two normally open (2NO) and two normally closed (2NC) auxiliary contact, it offers versatile control and feedback option for complex industrial automation system. Designed for straightforward installation, the 3MT8018-1AF04 utilizes secure screw terminal and is activated by a standard 110V AC, 50Hz control voltage. Its compact yet durable design makes it an ideal choice for diverse industrial and commercial electrical setup requiring dependable motor control.

Benefit

• Reliable Motor Control: Specifically designed for AC-3 applications, ensuring efficient and safe switching of inductive loads like motors, reducing wear and tear on machinery.
• Versatile Auxiliary Contact: Equipped with 2 normally open and 2 normally closed auxiliary contact, providing flexible integration into control circuits for signaling, interlocking, and status indication.
• Robust Performance: Capable of handling significant power (18A / 7.5kW at 400V), making it suitable for a wide range of medium-power industrial application.
• Easy Installation: Features user-friendly screw terminals for quick, secure, and hassle-free wiring, saving time and effort during setup.
• Compact Design (Size S0): Optimizes panel space, allowing for more efficient and compact electrical cabinet designs without compromising performance.
• Siemens Quality & Durability: Manufactured by Siemens, a global leader in industrial automation, ensuring high-quality construction, long operational life, and consistent performance.
• Standard Control Voltage: Operates with a common 110V AC, 50Hz coil, simplifying integration into existing electrical system.

Function

• Motor Switching: Primarily functions to make and break the main power circuit to electric motors, enabling their start, stop, and protective shutdown.
• Load Switching: Acts as a heavy-duty switch for other inductive or resistive load within its current and voltage rating.
• Control Circuit Integration: Its 2NO+2NC auxiliary contacts are used to signal the contactor’s status to PLC, relay, or other control devices, or to create interlocking mechanism.
• Overload Relay Interface: Designed to seamlessly integrate with separate overload relay for comprehensive motor protection against overcurrent.
• Remote Operation: Enables remote control of connected load when used in conjunction with pushbutton, switches, or automation system.

Application

The Siemens 3MT8018-1AF04 contactor is ideal for a wide array of industrial and commercial application, including:

• Starting and stopping of electric motor (e.g., pump, fan, conveyor, compressor)
• Heating and lighting circuit
• Industrial machinery control panel
• Building automation system
• HVAC system
• Material handling equipment
• Water treatment plant

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