Siemens 3RT2027-1BA40 Power Contactor 32A, 15kW, 12V DC Coil, 3-Pole, S0 Size, 1 NO + 1 NC Auxiliary Contacts, Screw Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT2027-1BA40 is a high-performance power contactor designed for reliable and efficient switching of motors and other industrial loads up to 15 kW at 400 V. As part of the SIRIUS modular system, this contactor offers a compact and robust solution for your control and automation needs.

Featuring a 12 V DC operating coil, it is ideal for low-voltage control systems, and its integrated auxiliary contacts (1 NO + 1 NC) provide essential feedback for your control circuits. The screw terminals ensure a secure and straightforward connection, making installation and maintenance quick and easy.

Key Product Features & Benefit

• High Performance & Reliability: Engineered for AC-3e/AC-3 operation with a rated current of 32 A, ensuring dependable performance for motor switching applications.
• Compact & Space-Saving Design: The S0 size is ideal for panel builders and system integrators looking to maximize space within control cabinets.
• Energy-Efficient Operation: The 12 V DC coil technology is energy-efficient, reducing power consumption and heat generation.
• Enhanced Functionality: Comes with integrated 1 NO and 1 NC auxiliary contacts, eliminating the need for separate add-on blocks in many applications.
• Secure & Easy Connection: The screw terminals provide a strong, reliable connection for both power and control wiring.
• Versatile Application: Suitable for a wide range of industrial applications, including motor control, resistive loads, and general-purpose switching.
• Seamless Integration: Fully compatible with the Siemens SIRIUS modular system, allowing for easy expansion and integration with other SIRIUS components like overload relays and circuit breakers.

Function

The Siemens 3RT2027-1BA40 power contactor serves as an electromagnetic switch for controlling high-power loads from a low-power control signal.

1. Motor Switching: Controls the on/off state of 3-phase asynchronous motors.
2. Load Control: Suitable for switching various resistive, capacitive, and inductive loads.
3. Circuit Isolation: Provides a means of isolating power to a specific circuit or device.
4. Signal Feedback: The integrated auxiliary contacts provide a signal to the control system, indicating the contactor’s open or closed state.

Technical Specification

• Product Type: Power Contactor
• Manufacturer: Siemens
• Part Number: 3RT2027-1BA40
• Rated Current (AC-3e/AC-3): 32 A
• Rated Power: 15 kW @ 400 V
• Number of Poles: 3
• Coil Voltage: 12 V DC
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Connection Type: Screw Terminal
• Size: S0
• Series: SIRIUS 3RT2

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