Siemens 3RH1122-1BB40 Contactor Relay
The Siemens 3RH1122-1BB40 is a high-performance contactor relay from the SIRIUS series, engineered to provide reliable control in industrial automation systems. Designed for versatility and durability, this relay is suitable for a wide range of applications.
Key Features
- Contact Configuration: Equipped with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, offering flexibility in control circuit design.
- Control Voltage: Operates with a 24 V DC coil voltage, ensuring efficient and consistent performance.
- Current Rating: Capable of handling up to 6 A at 230 V AC and 10 A at 24 V DC, accommodating various load requirements.
- Insulation Voltage: Rated at 690 V, providing robust insulation for enhanced safety.
- Mechanical Durability: Designed for a mechanical service life of up to 30 million switching cycles, ensuring long-term reliability.
- Compact Design: Housed in a size S00 frame, making it ideal for installations where space is limited.
- Mounting Options: Supports both DIN rail and panel mounting, offering flexibility in installation.
- Terminal Type: Features screw terminals for secure and straightforward wiring connections.
Technical Specifications
- Operating Temperature Range: -25°C to +60°C, suitable for various environmental conditions.
- Protection Class: IP20, ensuring protection against solid objects larger than 12.5 mm.
- Dimensions: 45 mm (W) x 57.5 mm (H) x 72 mm (D), facilitating easy integration into control panels.
- Weight: Approximately 0.263 kg, contributing to ease of handling and installation.
The Siemens 3RH1122-1BB40 contactor relay exemplifies Siemens’ commitment to quality and innovation, offering a reliable solution for controlling auxiliary circuits in industrial automation applications.









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