Siemens 3RT2325-2XF40-0LA2 SIRIUS S0 Traction Contactor, 4-Pole, 35A AC-1, 110V DC Solid-State, Spring-Loaded Terminal Original Brand New

Overview

The Siemens 3RT2325-2XF40-0LA2 is a high-performance SIRIUS S0 traction contactor specifically engineered for demanding railway application and other environment requiring robust and reliable switching. This 4-pole AC-1 contactor is rated for 35 A at 400 V / 40 °C and features a 110 V DC solid-state operating mechanism with an extended operating range of 0.7 to 1.25*Uc. Its design prioritizes durability and performance under extreme conditions, including an integrated varistor for overvoltage protection and vibration-resistant spring-loaded terminal. Approved according to IEC 60947‑4‑1, IEC 60077‑2, and EN 50155, this contactor offers exceptional suitability for railway use, ensuring reliable operation even with increased mechanical oscillations and vibration.

Function

The Siemens 3RT2325-2XF40-0LA2 traction contactor is designed for switching low or non-inductive loads (AC-1) in critical applications. Its solid-state DC operating mechanism ensures consistent and reliable performance across a wide voltage and temperature range. The integrated varistor provides crucial protection against overvoltage spikes, extending the lifespan of the coil. The inclusion of 1 NO + 1 NC auxiliary contacts offers versatile signaling and interlocking capabilities within control circuit.

Benefit

• Railway Approved: Compliance with IEC 60077-2 and EN 50155 makes it ideal for rail vehicle applications, meeting stringent safety and performance requirement.
• Extreme Durability: Built to withstand harsh environments, offering high resistance to mechanical oscillation and vibration, crucial for mobile application.
• Wide Temperature Range: Operates reliably from -40 °C to +70 °C, ensuring performance in diverse climatic condition.
• Reliable Operation: Solid-state operating mechanism provides consistent performance with an extended operating range.
• Enhanced Protection: Integrated varistor protects the control circuit from harmful overvoltage, reducing maintenance and increasing lifespan.
• Easy & Secure Wiring: Spring-loaded terminals offer quick, reliable, and vibration-proof connections, simplifying installation and minimizing downtime.
• Versatile Application: Suitable for a wide range of AC-1 applications beyond railway, wherever robust switching of non-inductive loads is required.

Application

This Siemens traction contactor is primarily designed for use in railway application, including but not limited to:

• Onboard power system in train and locomotive
• Switching of auxiliary circuit in railway vehicle
• Control system in demanding industrial environment
• Application requiring high resistance to shock and vibration
• System operating under extreme temperature variation

Performance Range: The Siemens SIRIUS contactor family offers a broad range of product to meet various load requirement:

• Size S00 to S3: 3RT20 contactor for motor load (AC‑3 and AC‑3e) up to 110 A/55 kW.
• Size S6 to S12: 3RT10 contactor for motor load (AC‑3 and AC‑3e) from 55 kW to 500 A/250 kW.
• 3RT14 contactors: For low or non-inductive loads (AC‑1) up to 690 A.

Protection and Installation:

• Short-circuit & Overload Protection: All connections (main, auxiliary, control supply) must be protected using suitable measures. Refer to the technical product data sheet and configuration manuals for detailed guidance on device combination (contactor with overload relay or circuit breaker).
• Overvoltage Protection: The 3RT contactors are pre-equipped with coil damping (integrated varistor). Note that damping can influence break and delay times.
• Auxiliary Contacts: The 3RT2325-2XF40-0LA2 includes 1 NO + 1 NC integrated auxiliary contacts. Further expansion with auxiliary switches is possible (except for S00 coupling contactors), adhering to permissible configuration.
• Side-by-Side Mounting: Permissible for S00 to S3 sizes with solid-state operating mechanisms at ambient temperatures up to 70 °C, allowing for space-saving panel design.

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