Siemens 3RT2336-3XF40-0LA2 S2 Traction Contactor, 60A AC-1, 110V DC, Solid-State Original Brand New

Overview

The Siemens 3RT2336-3XF40-0LA2 is a high-performance, 4-pole traction contactor engineered for demanding railway and industrial applications. Designed to meet stringent standards like IEC 60947-4-1, IEC 60077-2, and EN 50155, this S2 frame size contactor offers exceptional reliability and an extended operating range. Its solid-state DC operating mechanism (110 V DC, 0.7-1.25* Uc) with an integrated varistor ensures consistent performance even in harsh environments. Featuring a 60A AC-1 current rating at 400V / 40°C, screw terminals for the main circuit, and vibration-resistant spring-loaded terminals for control and auxiliary circuits, the 3RT2336-3XF40-0LA2 is built for durability and ease of installation.

Key Features & Function

• Traction Contactor (AC-1): Specifically designed for switching low or non-inductive loads up to 60A.
• 4-Pole Configuration: Provides versatile switching capabilities.
• 110 V DC Solid-State Operating Mechanism: Ensures reliable and consistent operation, particularly in DC control circuits, with an extended operating range from 0.7 to 1.25 times the control supply voltage (Uc​).
• Integrated Varistor: Offers built-in surge suppression, protecting the coil from overvoltage spikes and enhancing device longevity.
• Auxiliary Contacts (1 NO + 1 NC): Provides immediate feedback on contactor status for control and interlocking purposes.
• Main Circuit Screw Terminals: Secure and robust connections for power circuits.
• Control and Auxiliary Circuit Spring-Loaded Terminals: Offers high vibration resistance, making it ideal for mobile applications like railway systems, and simplifies wiring.
• Frame Size S2: Compact yet powerful design.
• Extended Temperature Range: Operates reliably from -40 °C to +70 °C, surpassing standard industrial requirements.
• Enhanced Resistance to Mechanical Oscillations and Vibrations: Engineered for applications subjected to significant mechanical stress, crucial for railway use.
• Railway Approval: Complies with IEC 60077-2 and EN 50155, ensuring suitability for critical railway infrastructure.

Benefit

• Exceptional Reliability in Demanding Environments: Withstands extreme temperatures, vibrations, and voltage fluctuations, ensuring consistent performance.
• Reduced Downtime: Robust construction and railway approval minimize the risk of failures, leading to higher operational availability.
• Simplified Installation & Maintenance: Spring-loaded terminals offer quick, reliable connections, reducing installation time and effort.
• Enhanced System Protection: Integrated varistor protects control circuits from damaging voltage surges.
• Versatile Application: Ideal for railway vehicles, signaling systems, industrial machinery, and other applications requiring robust AC-1 switching with DC control.
• Compliance & Safety: Meets global standards, providing peace of mind regarding safety and regulatory compliance.

Standards & Performance

• Standards: IEC 60947-4-1, IEC 60077-2, EN 50155.
• Performance Range: Part of the Siemens 3RT2 contactor family, available in sizes S00 to S3 for various load requirements. This specific model is an S2.
• Application Focus: Beyond standard industrial use, this contactor is specifically approved for railway applications due to its extended operating range, temperature resilience, and vibration resistance.

Technical Details & Consideration

• Operating Range of Contactor Operating Mechanisms: The solid-state DC operating mechanism maintains an operating range from $0.7$ to 1.25×Us​ within a temperature range of -40 to 70 °C.
• Protection of Device Connections:
  • Main Connections: Refer to the technical product data sheet or Digital/Configuration Manuals for load feeders for short-circuit and overload protection details.
  • Auxiliary Connections: Protection information available in the technical product data sheet.
  • Control Supply Voltage: Requires consideration of relevant standards for control panel configuration, suitable power supply selection (e.g., current-limiting), and appropriate protection devices. Integrated coil damping (varistor) provides overvoltage protection.
• Auxiliary Contact Expansion: Basic units can be expanded with additional auxiliary switches, following permissible configurations.
• Ambient Temperature: Permissible operating ambient temperature is -40 to +70 °C.
• Side-by-Side Mounting (Solid-State Operating Mechanism): Permissible at ambient temperatures up to 70 °C for sizes S00 to S3. For S6 to S12, a 10mm clearance is recommended above 60 °C.

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