Siemens 3RT7025-1AC25 Contactor 18A, 7.5kW (400V), AC 24V Coil, Size S0 with Screw Terminal Original Brand New

Overview

The Siemens 3RT7025-1AC25 is a high-performance 3-pole contactor from the trusted SIRIUS industrial controls family. This device is engineered for reliable switching of motors and other industrial loads, offering robust performance in a compact Size S0 frame. With a rated operational current of 18A for AC-3 applications (at 400V) and a power rating of 7.5 kW, this contactor is ideal for a wide range of motor control applications. Its 24V AC coil voltage provides compatibility with standard control circuits, while the integrated 1NO (Normally Open) and 1NC (Normally Closed) auxiliary contacts offer flexible signaling and control options. The user-friendly screw terminals ensure a secure and straightforward connection for installation and maintenance.

Key Features & Benefit

• Reliable Switching: Designed for AC-3 applications, this contactor provides dependable switching of motors and other resistive loads up to 18A.
• Compact Design (Size S0): The space-saving Size S0 form factor allows for high-density installation in control panels and electrical enclosures, maximizing panel space.
• Versatile Auxiliary Contacts: The built-in 1NO and 1NC auxiliary contacts provide essential feedback for PLC systems, signaling, and interlocking circuits, enhancing system safety and functionality.
• Energy-Efficient Coil: The 24V AC coil voltage is a common industrial standard, ensuring easy integration with existing control systems and offering efficient power consumption.
• Secure Screw Terminals: The robust screw terminals guarantee a firm and reliable electrical connection, minimizing the risk of loose connections and ensuring long-term operational stability.
• Durable and Certified: Manufactured by Siemens, a global leader in industrial automation, this contactor is built to the highest quality standards and is certified for use in a variety of industrial environments.

Technical Specification

• Product Type: Contactor
• Product Number: 3RT7025-1AC25
• Manufacturer: Siemens
• Series: SIRIUS 3RT
• Size: S0
• Rated Operational Current (Ie): 18A (for AC-3 at 400V)
• Rated Power (P): 7.5 kW (at 400V)
• Number of Poles: 3
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
• Coil Voltage (Us): 24V AC, 50/60Hz
• Termination Type: Screw Terminals
• Ambient Temperature: -25 to +60 °C
• Mounting: DIN Rail or Screw Mounting

Function & Application

The Siemens 3RT7025-1AC25 contactor is a fundamental component in industrial control systems. It is primarily used for:

• Motor Control: Switching and controlling the start/stop of 3-phase AC motors.
• Resistive Load Switching: Switching heating elements, lighting, and other resistive loads.
• Automation Systems: Acting as a crucial interface between control signals from PLCs (Programmable Logic Controllers) or other control devices and high-power electrical loads.
• Industrial Machinery: Integration into a wide range of machinery and equipment, including conveyors, pumps, fans, and compressors.

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