Siemens SIRIUS 3RT2317-2BF40 Contactor, AC-1, 22A, 4-Pole, 110V DC, Spring-Loaded, Size S00 Original Brand New

Siemens SIRIUS 3RT2317-2BF40 Contactor – 4-Pole, AC-1, 22A, 110V DC

The Siemens 3RT2317-2BF40 is a high-performance 4-pole contactor from the SIRIUS 3RT23 series, specifically designed for switching non-inductive or weakly inductive loads in AC-1 applications. With a robust current rating of 22A at 400V/40°C and a reliable 110V DC operating mechanism, this Size S00 contactor is an essential component for various industrial control systems. Its convenient spring-loaded terminals ensure quick and secure wiring, making it ideal for efficient panel building and maintenance.

Key Features

• AC-1 Application: Optimized for switching 4-pole AC-1 loads, perfect for heating systems, lighting, and general power distribution.
• High Current Rating: Handles up to 22A (at 400V / 40°C), providing ample capacity for demanding applications.
• DC Operating Mechanism: Features a 110V DC coil for reliable and precise control in DC-powered systems.
• Spring-Loaded Terminals: Offers fast, tool-free, and vibration-resistant connections, enhancing installation efficiency and reliability.
• Compact Size S00: Space-saving design for efficient use of control panel real estate.
• Integrated Auxiliary Contact: The basic unit includes one integrated auxiliary contact for signaling or control circuit feedback.
• Robust Construction: Built to Siemens’ rigorous quality standards for long-lasting performance and reliability in industrial environments.

Overview

The Siemens SIRIUS 3RT23 series contactors are renowned for their compact design, high contact reliability, and ease of use. The 3RT2317-2BF40, with its 4-pole configuration, is particularly suited for applications requiring the switching of multi-phase non-inductive loads, disconnecting loads, or power generation plants from the grid, and transfer switching.

Standard Compliance

This contactor adheres to leading international industrial standards, ensuring its quality and safety:

• IEC 60947‑1
• IEC 60947‑4‑1
• IEC 60947‑5‑1 (for auxiliary switches)

Protection and Reliability

• Connection Protection: All connections (main, auxiliary, and control supply voltage) must be protected against overload and short circuits using appropriate measures. Refer to technical data sheets and configuration manuals for detailed guidance on protection devices such as overload relays (e.g., Siemens 3RU2 thermal or 3RB3 electronic) or circuit breakers.
• Overvoltage Protection: The 3RT23 contactors can be fitted with external surge suppressors (RC elements, varistors, diodes) to dampen opening surges in the coil, protecting sensitive control circuitry.
• Contact Reliability: Auxiliary contacts are designed for high contact reliability, even at low voltages (≤ 110 V) and currents (≤ 100 mA), making them ideal for solid-state circuits.

Connection Methods

• Main Circuit: Spring-loaded terminals with a convenient plug-in design for device connectors.
• Auxiliary and Control Circuit: Screw terminals for secure and reliable connections.

Electromagnetic Compatibility (EMC)

The 3RT2317-2BF40 fulfills the requirements for environment category A, ensuring reliable operation in industrial settings. When used with frequency converters, specific configuration notes in the Equipment Manual must be observed.

Operating Mechanism & Expansion

The 110V DC operating mechanism ensures reliable switching. The 3RT2317-2BF40 features an integrated auxiliary contact (typically 1 NO + 1 NC for 3RT232 and above, or integrated for 3RT231). Further expansion is possible with additional auxiliary switches (sold separately) to meet specific application requirements. Solenoid coil replacement is possible for maintenance flexibility.

Accessories & Spare Part

A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors, including surge suppressors, auxiliary switches, and overload relays, allowing for versatile system configurations and easy maintenance.

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