Overview
The Siemens SIRIUS 3RT2316-2BF40 contactor is part of the trusted 3RT23 series, engineered for demanding industrial environments. This 4-pole AC-1 contactor is specifically suited for switching resistive loads, non-inductive loads, and for applications like disconnecting loads or power generation plants from the grid, and transfer switching. Its compact S00 size makes it ideal for space-constrained installations, while the spring-loaded terminals simplify wiring and enhance connection reliability.
Key Features & Function
- 4-Pole AC-1 Contactor: Designed for switching non-inductive or weakly inductive loads (AC-1 category).
- High Current Rating: Handles up to 18 A at 400 V and 40 °C, suitable for various power switching needs.
- 110 V DC Operating Coil: Ensures reliable control with a DC supply voltage.
- Spring-Loaded Terminals: Provides fast, secure, and vibration-resistant connections, reducing wiring time and maintenance.
- Compact Size S00: Optimizes panel space, allowing for more efficient system designs.
- Integrated Auxiliary Contact: The basic unit includes one integrated auxiliary contact for signaling or interlocking functions.
- Modular Design: Expandable with additional auxiliary switches for increased functionality.
- Standards Compliance: Conforms to IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring international compatibility and safety.
- Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A.
- Motor Protection Integration: Compatible with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection (when used with motors).
- Coil Replacement Capability: The solenoid coil can be replaced, extending the lifespan of the contactor.
Benefit
- Enhanced Reliability: Robust design and adherence to international standards ensure dependable operation in industrial settings.
- Space Saving: Compact S00 size allows for high-density installations in control cabinets.
- Reduced Wiring Time: Spring-loaded terminals offer quick and easy installation, leading to cost savings.
- Versatile Application: Ideal for a wide range of AC-1 switching applications, including load disconnection, power generation, and transfer switching.
- Improved Safety: Features like short-circuit and overload protection considerations, and optional surge suppressors, contribute to safer operation.
- Longer Service Life: Replaceable solenoid coil extends the operational life of the contactor, reducing total cost of ownership.
- System Integration: Seamless compatibility with Siemens SIRIUS control components for comprehensive automation solutions.
Application
The Siemens 3RT2316-2BF40 contactor is ideally suited for:
- Four-pole switching of weak or non-inductive loads (AC-1 applications)
- Disconnecting loads or power generation plants from the electrical grid
- Transfer switching applications
- General industrial control circuits requiring reliable switching of resistive loads
- Integration into control panels, machinery, and automation systems













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