Siemens 3RT1076-2XF46-0LA2 Power Contactor, 500A, Railway, DC Original Brand New

Overview

The Siemens 3RT1076-2XF46-0LA2 is a robust, 3-pole power contactor from the SIRIUS 3RT family, specifically engineered for demanding applications, including those requiring extended rated conditions and railway compliance (IEC 60077). With an operational current of 500 A (AC-3e/AC-3) and a rated power of 250 kW at 400 V, this contactor is ideal for reliably switching large electric motors and heavy loads in harsh and mobile environments.

It features an advanced electronic DC drive (110 V DC coil with a wide operating range of 0.7 to 1.25×Uc​), coupled with a dedicated PLC input (24-110 V DC), ensuring flexible and reliable control. The main circuit utilizes stable busbar connections, while the control and auxiliary circuits feature spring-loaded terminals for vibration-resistant, maintenance-free wiring—a critical feature for railway and traction systems.

Benefits & Advantages

1. Railway & Traction Application Ready: Fully compliant with IEC 60077, ensuring reliability and safe operation under the stringent conditions of rolling stock and railway infrastructure.
2. High-Current Switching Capacity: Rated at $500\text{ A}$ and $250\text{ kW}$, providing robust performance for high-power motor applications.
3. Maximum Control Reliability: The $110\text{ V DC}$ electronic drive features an extended operating voltage range (0.7 to 1.25×Uc​) and integrated overvoltage damping, guaranteeing secure switching even with significant voltage fluctuations.
4. Vibration-Resistant Wiring: Control and auxiliary circuits utilize spring-loaded terminals, providing a permanent, gas-tight, and highly stable connection, essential for applications subjected to continuous shock and vibration.
5. PLC Integration: Dedicated $24\text{ to }110\text{ V DC}$ PLC input allows for direct and seamless interfacing with modern automation systems and control logic.

Function

The 3RT1076-2XF46-0LA2 power contactor is designed for switching electric motors and other heavy loads up to $500\text{ A}$ in both AC-3 and AC-3e operation. Its key function is to safely and reliably connect or disconnect the main power circuit under control of the low-voltage electronic coil.

Application

• Railway and Mass Transit: Traction systems, auxiliary power control, and onboard vehicle applications requiring IEC 60077 compliance.
• Heavy Industry: Motor control for large pumps, fans, compressors, and conveyors in environments with high vibration or wide temperature swings.
• Industrial Automation: Integration into high-power electrical panels where reliable, high-speed switching and direct PLC control are necessary.

For more information and to purchase the Siemens 3RT1076-2XF46-0LA2 power contactor, visit turll today and explore our full range of SIRIUS industrial control components.