Siemens SIRIUS 3RT7025-1AL20 Contactor 18A, 7.5kW (400V), 230V AC Coil, Screw Terminal, Size S0 Original Brand New

Overview: Siemens 3RT7025-1AL20 Contactor

The Siemens 3RT7025-1AL20 is a high-performance contactor from the SIRIUS 3RT series, designed for reliable switching of three-phase motors. Engineered with a compact Size S0 frame, this device is a core component in industrial control systems and automation panels. It is specifically rated for AC-3 duty, making it suitable for standard motor switching applications.

This contactor boasts a robust current rating of 18A and a power rating of 7.5kW at 400V, providing ample capacity for a wide range of motor loads. The 230V AC 50/60Hz operating coil ensures compatibility with common European and global power systems, while the dependable screw terminals facilitate secure and straightforward wiring. As a genuine Siemens product, the 3RT7025-1AL20 guarantees exceptional quality, long-term durability, and seamless integration with other SIRIUS control components.

Key Benefits & Features

• Compact Design: The Size S0 frame allows for space-saving installation in control cabinets and panels.
• High Performance: With an 18A AC-3 rating and 7.5kW (400V) power capacity, it handles demanding motor loads efficiently.
• Versatile Coil Voltage: The 230V AC coil (50/60Hz) is a standard for many industrial applications, ensuring broad compatibility.
• Reliable Connections: Features durable screw terminals for a secure, vibration-resistant connection, reducing maintenance needs.
• Longevity: Built with high-quality materials and rigorous Siemens engineering to ensure a long operational life.
• Seamless Integration: Part of the Siemens SIRIUS modular system, allowing for easy expansion with auxiliary contacts, overload relays, and other accessories.

Function

The Siemens 3RT7025-1AL20 contactor’s primary function is to remotely switch an electrical load, typically an electric motor. It operates as an electromechanical relay: when the 230V AC coil is energized, it generates a magnetic field that pulls a set of internal contacts closed, allowing current to flow to the motor. When the coil is de-energized, a spring returns the contacts to their open position, stopping the current flow. This controlled on/off switching is crucial for starting, stopping, and controlling the operation of industrial machinery.

Technical Specification

• Product Type: Contactor
• Manufacturer: Siemens
• Product Number: 3RT7025-1AL20
• Series: SIRIUS 3RT
• Contactor Size: S0
• Operating Current (AC-3): 18A (at <= 400V)
• Rated Power (AC-3): 7.5kW (at 400V)
• Coil Voltage: 230V AC, 50/60Hz
• Terminal Type: Screw Terminal
• Main Contacts: 3 Main Poles
• Auxiliary Contacts: None (W/O)
• Mounting: DIN Rail or Screw Mounting

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