Siemens SIRIUS 3RT2018-2LB42-0LA0 Traction Contactor 16A, 7.5kW, 24V DC, Spring-Loaded Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT2018-2LB42-0LA0 is a high-performance traction contactor designed for reliable switching of AC-3e/AC-3 loads. With a robust design and a compact S00 frame size, this contactor is engineered for demanding applications in various industries. It features a rated current of 16A and a power rating of 7.5 kW at 400V, making it suitable for motor control and other inductive loads.

The integrated varistor provides superior surge protection, while the auxiliary contact (1 NC) offers additional control functionality. The innovative spring-loaded terminal system ensures fast, secure, and vibration-proof connections, significantly reducing wiring time and maintenance.

Key Features & Function

• Traction Contactor: Specifically designed for applications requiring high reliability and performance under dynamic conditions.
• Rated Performance: Handles up to 16A and 7.5 kW at 400V for AC-3e/AC-3 applications.
• 3-Pole Configuration: Ideal for controlling three-phase motors and other loads.
• Control Voltage: Operates with a 24V DC control voltage, with a wide tolerance range of 0.7 to 1.25 times the nominal voltage (Uc).
• Integrated Varistor: Provides essential surge suppression to protect sensitive electronics and extend the contactor’s lifespan.
• Auxiliary Contacts: Includes one normally closed (1 NC) auxiliary contact for feedback or interlocking purposes.
• Spring-Loaded Terminals: Guarantees a reliable and maintenance-free connection, even in environments with high vibration. This technology eliminates the need for re-tightening screws.
• Compact Design: The S00 frame size allows for space-saving installation in control cabinets and panels.
• Plugged-on Series Resistor: Ensures optimal performance and extends the life of the contactor in specific applications.

Benefit

• Enhanced Reliability: Built to withstand demanding traction and industrial environments.
• Superior Protection: The integrated varistor safeguards against voltage spikes, protecting both the contactor and the connected equipment.
• Reduced Installation Time: Spring-loaded terminals simplify wiring, leading to faster commissioning and lower labor costs.
• Maintenance-Free Connections: The secure terminal technology ensures a long-lasting, reliable connection without the need for periodic checks.
• Space-Efficient: Its compact S00 frame size is perfect for high-density control panel layouts.
• Versatile Application: Suitable for a wide range of motor control and general-purpose switching tasks.

Technical Specification

• Product Type: Traction Contactor
• Manufacturer: Siemens
• Product Number: 3RT2018-2LB42-0LA0
• Rated Current (AC-3e/AC-3): 16 A
• Power (AC-3e/AC-3): 7.5 kW @ 400 V
• Number of Poles: 3-pole
• Control Voltage: 24 V DC (0.7…1.25 * Uc)
• Auxiliary Contacts: 1 NC
• Terminal Type: Spring-loaded terminal
• Frame Size: S00
• Special Features: Integrated varistor, plugged-on series resistor

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