Overview
Siemens 3MT8140-1AN24 Contactor is a high-performance, robust solution designed for demanding industrial applications. This premium AC-3 contactor is engineered to handle substantial load, making it ideal for controlling motor and other resistive load up to 140A (at 400V, 75kW). As part of Siemens’ renowned electrical components lineup, the 3MT8140-1AN24 guarantees reliability, efficiency, and safety in critical operation. Its 3-pole configuration and screw terminal ensure secure and straightforward installation, while the 2NO + 2NC auxiliary contacts provide versatile control and signaling capabilities.
Key Features & Function
- High Current Rating: Rated for 140A AC-3 operation, making it suitable for heavy-duty motor control and switching application.
- Power Handling: Efficiently manages up to 75kW at 400V, providing ample capacity for powerful industrial machinery.
- Versatile Auxiliary Contacts: Equipped with 2 Normally Open (NO) and 2 Normally Closed (NC) auxiliary contacts, offering flexible options for interlocking, signaling, and control circuit.
- Coil Voltage: Features a 220 VAC coil (50/60 Hz compatible), ensuring broad compatibility with standard industrial power supplies.
- Robust 3-Pole Design: Designed for reliable switching of three-phase power system.
- Size S6: Compact yet powerful, conforming to Size S6 standards for optimized panel space utilization.
- Secure Screw Terminals: Provides highly reliable and durable electrical connection, simplifying wiring and reducing maintenance.
- Siemens Quality: Manufactured by Siemens, guaranteeing high standards of quality, durability, and performance for long-term operational stability.
- Compliance: Adheres to relevant international standards for industrial control gear, ensuring safety and global usability.
Application
The Siemens 3MT8140-1AN24 Contactor is an ideal choice for:
- Controlling large industrial motor
- HVAC system
- Pumping station
- Conveyor system
- Factory automation
- Power distribution panel
- Any application requiring reliable switching of high AC-3 load.












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