Overview
The Siemens 3RT2317-2BM40 is a robust and reliable 4-pole contactor from the SIRIUS 3RT2 series, specifically designed for switching non-inductive or weakly inductive loads (AC-1) up to 22 A at 400 V (at 40 °C). This compact Size S00 contactor features a 220 V DC operating mechanism and convenient spring-loaded terminals for quick and secure wiring. Ideal for a wide range of industrial applications, including disconnecting loads, power generation plant switching, and transfer switching, the 3RT2317-2BM40 ensures high contact reliability and meets stringent international standards.
Key Features & Benefit
- Reliable 4-Pole Switching (AC-1): Optimized for switching weak or non-inductive loads, ensuring stable operation in diverse applications.
- High Current Rating: Handles up to 22 A at 400 V / 40 °C for efficient power control.
- 220 V DC Operating Mechanism: Provides versatile control options for DC power systems.
- Spring-Loaded Terminals: Facilitates fast, tool-free, and secure wiring, reducing installation time and effort.
- Compact Size S00: Space-saving design for efficient panel layout and integration.
- Integrated Auxiliary Contact: Includes one integrated auxiliary contact in the basic unit, streamlining wiring for control circuits.
- Robust & Standards-Compliant: Manufactured to IEC 60947-1, IEC 60947-4-1, and IEC 60974-5-1 standards, guaranteeing performance and safety.
- Flexible Protection Options: Supports various protection measures for main, auxiliary, and control circuits, including short-circuit and overload protection.
- Surge Suppressor Compatibility: Can be retrofitted with RC elements, varistors, or diodes for effective coil damping against opening surges (accessories sold separately).
- High Contact Reliability: Auxiliary contacts are suitable for switching low voltages (≤ 110 V) and currents (≤ 100 mA), making them ideal for solid-state circuits.
- Motor Protection Integration: Compatible with 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection (for AC-3 applications with special versions of 3RT23).
- Replaceable Solenoid Coil: Allows for easy maintenance and extended product lifespan.
- Expandable Auxiliary Switches: Can be expanded with additional auxiliary switches for increased control functionality.
Function
- Load Switching: Effectively switches 4-pole weak or non-inductive loads (AC-1).
- Power Disconnection: Capable of disconnecting loads or power generation plants from the electrical grid.
- Transfer Switching: Facilitates the reliable transfer between different power sources or loads.
- Control Circuit Integration: Features an integrated auxiliary contact for seamless integration into control circuits.
Application
The Siemens 3RT2317-2BM40 contactor is an ideal solution for:
- Industrial automation and control systems
- Building management systems
- Heating, ventilation, and air conditioning (HVAC) systems
- Lighting control
- Power distribution panels
- Renewable energy applications (e.g., solar, wind)
- Any application requiring reliable switching of resistive or lightly inductive loads.
For more information on device combinations, short-circuit protection, or additional accessories, please refer to the technical product data sheet and relevant Siemens configuration manuals.
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