Siemens 3RT7027-1AM05 Contactor 32A, 15kW, 220V AC Coil, 1NO+1NC, Screw Terminal, Size S0 Original Brand New

Overview

The Siemens 3RT7027-1AM05 is a high-performance SIRIUS series power contactor, engineered for reliable switching of electric motors and other resistive loads. This robust and compact device is designed for AC-3 applications up to 32A at 400V, with a rated power of 15kW. Its versatile design features one normally open (1NO) and one normally closed (1NC) auxiliary contact for status indication and control circuit integration. The contactor operates with a 220V AC coil and utilizes secure screw terminals for easy and reliable wiring. Its compact size S0 footprint makes it ideal for space-constrained industrial control panels.

Key Features & Benefit

• High Performance: Rated for AC-3 operation up to 32A and 15kW at 400V, ensuring reliable motor control.
• Integrated Auxiliary Contacts: The built-in 1NO and 1NC contacts simplify wiring for control circuits and provide essential feedback on the contactor’s status.
• Versatile Coil Voltage: The 220V AC coil is a standard voltage, making it compatible with a wide range of industrial power systems.
• Robust & Durable: Part of the trusted Siemens SIRIUS line, known for its long-lasting performance and high mechanical and electrical endurance.
• Secure Connection: The screw terminals provide a secure and vibration-resistant connection, ensuring safety and reliability.
• Compact Design: The size S0 form factor allows for efficient use of space in control cabinets and enclosures.
• Easy Integration: Compatible with a wide range of Siemens SIRIUS accessories, including overload relays, auxiliary contact blocks, and surge suppressors.

Function

The Siemens 3RT7027-1AM05 contactor acts as an electromechanical switch. When the 220V AC coil is energized, it generates a magnetic field that pulls the main contacts closed, allowing power to flow to the connected load (e.g., an electric motor). Simultaneously, the auxiliary contacts change state—the 1NO contact closes and the 1NC contact opens—providing a signal for external control circuits. When the coil is de-energized, springs force the main contacts open, interrupting the power supply.

Technical Specification

• Product Type: Contactor, AC-3
• Product Number: 3RT7027-1AM05
• Rated Current (AC-3): 32A at 400V
• Rated Power (AC-3): 15kW at 400V
• Coil Voltage: 220V AC, 50Hz
• Auxiliary Contacts: 1NO + 1NC
• Terminal Type: Screw Terminal
• Size: S0
• Operating Temperature: -25°C to +60°C
• Mounting: DIN Rail or Screw Mounting
• Manufacturer: Siemens

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