Siemens SIRIUS 3RT2027-2DB40 Power Contactor, 32A, 15kW, 24V DC Coil, Size S0, Spring-Loaded Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT2027-2DB40 Power Contactor is a high-performance, 3-pole switching device from the SIRIUS 3RT2 series, designed for reliably controlling electric motors and other loads up to 15 kW at 400 V (AC-3e/AC-3). This robust contactor is rated for a continuous operational current of 32 A and features a low-power, integrated 24 V DC coil. The included, pre-installed plugged-in varistor provides crucial surge suppression, protecting the coil and control circuit components. Its compact Size S0 design and efficient spring-loaded terminals ensure quick, reliable, and vibration-proof wiring in industrial control panels.

Key Technical Specification

• Product Number: 3RT2027-2DB40
• Contactor Series: Siemens SIRIUS 3RT2
• Operational Current (AC-3e/AC-3, 400 V): 32 A
• Operational Power (AC-3e/AC-3, 400 V): 15 kW
• Number of Poles: 3-pole
• Coil Voltage: 24 V DC
• Surge Suppression: Integrated plugged-in varistor
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Connection Type: Spring-loaded terminal (Spring-type terminal)
• Contactor Size: S0 (Space-saving standard size)

Benefit

• Reliable Performance: High switching capacity and mechanical endurance characteristic of the Siemens SIRIUS range.
• Space-Saving Design: Compact Size S0 allows for efficient panel layout and component density.
• Quick Wiring: Innovative spring-loaded terminals significantly reduce wiring time and offer high contact reliability, especially in vibrating environments.
• Enhanced Circuit Protection: Built-in varistor surge suppression protects the sensitive DC control circuit from voltage peaks, extending the coil’s service life.
• Global Standard Compliance: Meets international standards for global application in industrial controls.

Function and Application

The 3RT2027-2DB40 Power Contactor is primarily used for switching AC motors (in AC-3 and AC-3e applications) but is also suitable for general load control (in AC-1 applications). It acts as the key interface between the control system (24 V DC) and the power circuit (up to 400 V / 15 kW).

• Motor Control: Switching 3-phase asynchronous motors in machinery, conveyor systems, pumps, and fans.
• Load Switching: Controlling resistive and inductive loads in industrial and commercial environments.
• Integration: Easily combined with the full range of SIRIUS 3RV thermal overload relays and other accessories to form complete motor starters.

For more Siemens SIRIUS Power Contactors and industrial control products, visit turll today and discover our full range of automation solutions!