Siemens SIRIUS 3RT2317-1BB40 Contactor 4-Pole, 22A (AC-1), 24V DC Coil, Screw Terminal, Size S00 Original Brand New

Overview

The Siemens SIRIUS 3RT2317-1BB40 is a high-performance 4-pole contactor from the renowned SIRIUS 3RT2 series, designed for reliable switching of weak or non-inductive loads (AC-1). With a rated current of 22 A at 400 V / 40 °C, this compact Size S00 contactor features a 24 V DC operating mechanism and robust screw terminals for secure connections. Manufactured by Siemens, a global leader in industrial automation, the 3RT2317-1BB40 adheres to stringent international standards, including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring dependable and safe operation in diverse industrial environments.

Key Function

• 4-Pole AC-1 Switching: Specifically engineered for 4-pole switching of weak or non-inductive loads, making it ideal for heating circuits, lighting systems, and similar applications where the power factor is close to unity.
• Grid Disconnection: Effectively disconnects loads or power generation plants from the electrical grid, providing safety and control.
• Transfer Switching: Capable of handling transfer switching applications, allowing for seamless transition between different power sources or circuits.
• 24V DC Coil Operation: Features a highly reliable 24V DC operating mechanism, ensuring efficient and precise control.
• Screw Terminals: Provides robust and easy-to-use screw terminals for secure and lasting electrical connections in the main and control circuits.

Benefit

• Exceptional Reliability: Built to Siemens’ high-quality standards, offering long-term, reliable performance in demanding industrial settings.
• Versatile Application: Ideal for a wide range of AC-1 applications, including resistive loads, lighting, and power distribution systems.
• Compact Design (Size S00): Space-saving design allows for efficient panel layout and integration into existing systems.
• Easy Installation: Screw terminals and the straightforward design facilitate quick and hassle-free installation.
• Enhanced Safety Features: Designed with considerations for short-circuit, overload, and overvoltage protection, contributing to overall system safety.
• High Contact Reliability: Auxiliary contacts (integrated and expandable) offer excellent contact reliability, especially for low voltages and currents, making them suitable for solid-state circuits.
• Damping Options: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) to dampen opening surges in the coil, protecting sensitive components.
• Expandability: Easily expanded with additional auxiliary switches to meet evolving control requirements.

Standard & Protection

The Siemens 3RT2317-1BB40 contactor adheres to the following international standards:

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

Protection Measures:

• Short-circuit and Overload Protection (Main Connections): For detailed information on protecting a free-standing contactor, refer to the technical product data sheet. For device combinations (contactor with overload relay or circuit breaker), consult the Digital and Standard Configuration Manuals for load feeders.
• Short-circuit and Overload Protection (Auxiliary Connections): Specific information regarding auxiliary contact protection is available in the technical product data sheet.
• Short-circuit and Overload Protection (Control Supply Voltage): Compliance with relevant standards for control panel configuration and component dimensioning is crucial. Recommendations include selecting suitable current-limiting power supplies and appropriately sized protection devices (e.g., miniature circuit breakers).
• Overvoltage Protection (Control Supply Voltage): The 3RT23 contactors (without pre-fitted coil circuits) can be equipped with separately ordered surge suppressors (RC elements, varistors, diodes, or diode assemblies) to mitigate opening surges. Note that damping may increase break times and delay times of contacts.

Connection Method

• Main Circuit: Features robust screw terminals for secure connections.
• Auxiliary and Control Circuit: Utilizes reliable screw terminals for all auxiliary and control connections.

Electromagnetic Compatibility (EMC)

The 3RT2317-1BB40 fulfills the requirements for environment category A. When used in conjunction with frequency converters, refer to the configuration notes in the Equipment Manual for optimal performance.

Contact Reliability of Auxiliary Contact

For switching voltages $\le$ 110 V and currents $\le$ 100 mA, the integrated auxiliary contacts of the 3RT2317-1BB40 ensure a high level of contact reliability. These contacts are particularly well-suited for solid-state circuits requiring currents $\ge$ 1 mA at voltages of 17 V and higher.

Motor Protection

While the 3RT2317-1BB40 is primarily designed for AC-1 applications, it can be combined with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for protection against overload when switching motor-driven loads (AC-3), although special versions of 3RT23 contactors are available specifically for AC-3.

Operating Mechanism Type

This contactor features a conventional 24 V DC operating mechanism, offering precise and reliable control.

Replacing Component

• Solenoid Coil: The solenoid coil for the 3RT2317-1BB40 can be replaced.
• Contact: For 3RT231 contactors like this model, only the contacts can be replaced.

Auxiliary Contact & Expansion

• Integrated Auxiliary Contacts: The 3RT2317-1BB40 basic unit includes one integrated auxiliary contact.
• Expansion Possibilities: The basic unit can be expanded with additional auxiliary switches. Refer to the “Auxiliary switches, instantaneous → Overview” for detailed information on permissible configurations.

Accessories & Spare Part

A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors, including surge suppressors, additional auxiliary switches, and various connection components. Please refer to the Siemens SIRIUS 3RT2 contactors and SIRIUS 3RH2 contactor relays accessories and spare parts catalog for detailed ordering information.

Application

The Siemens SIRIUS 3RT2317-1BB40 contactor is ideally suited for:

• Four-pole switching of resistive loads (e.g., heating elements, lighting)
• Switching of non-inductive or weakly inductive loads in industrial and commercial applications
• Disconnecting power generation plants or other electrical loads from the grid
• Implementing transfer switching functions in control systems

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