Siemens 3RT2518-2XF40-0LA2 Traction Contactor 16 A, 7.5 kW / 400 V, 4-Pole, 110 V DC Original Brand New

Overview

The Siemens 3RT2518-2XF40-0LA2 is a high-performance SIRIUS series traction contactor engineered for demanding applications, particularly in railway and heavy-duty industrial environments. This compact 4-pole contactor, featuring a solid-state operating mechanism and a low-power 110 V DC control voltage, ensures exceptional reliability and extended service life. Its integrated varistor provides crucial surge protection, while the secure spring-loaded terminals guarantee quick, vibration-proof wiring. Optimized for AC-3 switching up to 16 A (7.5 kW at 400 V), it is the ideal choice for switching motors and resistive loads where consistent, high-cycle performance is non-negotiable.

Key Features & Function

• AC-3 Rated Switching: Suitable for motor loads up to 7.5 kW at 400 V

• Current Rating: 16 A for consistent performance under heavy load

• Four-Pole Design: 4-pole configuration for reliable traction applications

• Control Voltage: 110 V DC, adjustable 0.7–1.25 *Uc

• Solid-State Operating Mechanism: Ensures fast, reliable switching with minimal wear

• Integrated Varistor: Protects the contactor and connected equipment from voltage spikes

• Main Contacts: 2 NO + 2 NC for flexible circuit control

• Spring-Loaded Terminals: Secure and fast connection

• Frame Size S00: Compact design for versatile mounting

Benefit

• Enhanced Reliability: Solid-state operation reduces mechanical wear and increases lifespan

• Protection Built-In: Integrated varistor safeguards against voltage surges

• Energy Efficiency: Optimized switching reduces power losses

• Flexible Installation: Compact S00 frame fits in tight spaces

• Versatile Operation: Suitable for AC-3 motor loads in industrial and traction systems

Application

• Railway & Tramway Systems: Switching traction motors and auxiliary circuits.

• Heavy-Duty Industrial Drives: Switching electric motors, especially where DC control voltage is preferred or required.

• High Vibration Environments: Ideal for machinery and mobile equipment due to the secure spring terminal connection.

• Control Panels: Any application requiring a robust 4-pole contactor with defined NO/NC main contacts.

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