Overview
The Siemens SIRIUS 3RT2317-2BB40 is a high-performance 4-pole contactor designed for switching non-inductive or weakly inductive loads (AC-1 applications). Engineered for reliability and ease of use, this compact Size S00 contactor features a 24V DC spring-loaded terminal operating mechanism, making it ideal for modern control panel designs requiring efficient and secure wiring. With a rated current of 22 A at 400 V and 40 °C, it's a robust solution for a wide range of industrial applications, including disconnecting loads, power generation plant switching, and transfer switching. Built to IEC 60947 standards, the 3RT2317-2BB40 ensures safe and dependable operation.
Function
The Siemens 3RT2317-2BB40 contactor serves as an electrically operated switch, primarily used for remotely controlling and switching power circuits. Its core functions include:
- Four-pole switching: Enables the switching of multi-phase circuits or multiple single-phase circuits simultaneously.
- Load Disconnection: Safely disconnects loads from the power grid.
- Power Generation Plant Integration: Facilitates the integration and switching within power generation systems.
- Transfer Switching: Used in applications requiring switching between different power sources or loads.
- Control Circuit Integration: Its 24V DC coil allows for seamless integration into various control circuits and PLCs.
Benefit
- Enhanced Safety: Complies with international standards (IEC) for reliable and safe operation.
- Reliable Performance: Designed for consistent performance in demanding industrial environments, ensuring high contact reliability for critical control signals.
- Space-Saving Design: The compact S00 size allows for efficient panel layout and reduces overall cabinet footprint.
- Easy and Fast Installation: Spring-loaded terminals offer quick and secure wiring, reducing installation time and effort.
- Versatile Application: Suitable for a broad range of AC-1 applications, providing flexibility for various industrial setups.
- Durable Construction: Built with quality materials for a long operational lifespan and minimal maintenance.
- Expandability: Can be expanded with additional auxiliary switches (sold separately) for increased functionality.
Protection and Compatibility:
- Short-circuit & Overload Protection: Requires external protection for main, auxiliary, and control supply voltage connections. Refer to the technical product data sheet and configuration manuals for detailed guidance.
- Overvoltage Protection: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for coil damping, available as accessories.
- Motor Protection: Compatible with Siemens 3RU2 thermal overload relays and 3RB3 electronic overload relays for robust motor protection (when used in conjunction with motors, though this is primarily an AC-1 contactor).
- EMC Compliance: Designed to meet electromagnetic compatibility requirements for industrial environments.
Connection Methods:
- Main Circuit: Features convenient spring-loaded terminals.
- Auxiliary and Control Circuit: Equipped with screw terminals.
Maintenance and Spares:
- Solenoid coil replacement is possible for the 3RT2317-2BB40.
- Accessories and spare parts are readily available within the SIRIUS 3RT2 contactor and 3RH2 contactor relay series.
Application
The Siemens 3RT2317-2BB40 contactor is ideally suited for:
- Switching resistive and weakly inductive loads in heating, lighting, and power distribution systems.
- Controlling non-motor loads in industrial automation.
- Disconnecting and isolating circuits.
- Integration into control panels for various industrial machinery.
- Power management in renewable energy systems (e.g., solar inverters).
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