Siemens Compact module K45F digital safety, 2 F-DI, IP67 2 x input Part number 3RK1205-0BQ00-0AA3

Product Overview

The Siemens 3RK1205-0BQ00-0AA3 is the Siemens AS-Interface Safe compact module K45F, 2 inputs (2 F-DI), IP67 rated, 2 × M12 sockets. It is designed for safe digital input detection via mechanical sensors in AS-Interface networks, enabling reliable safety monitoring and integration of safety devices such as emergency-stop buttons, safety-door switches or guarded-area sensors in industrial automation systems.

Key Features

• Safe compact module (K45F) for AS-Interface safety networks
• 2 safety-rated digital inputs (2 F-DI) for mechanical switch sensors
• Two M12 socket connections for sensor wiring
• AS-Interface protocol support with ID/ID2 code B/F
• Front addressing socket — easy setup and address assignment
• LED indicators: yellow for I/O status, green/red for AS-Interface/diagnostics
• IP67 protection — suitable for harsh and outdoor environments
• Compact housing and rugged build for industrial use
• Wide ambient operating temperature range for flexibility in various environments

Technical Specifications

• Article Number: 3RK1205-0BQ00-0AA3
• Product Type: AS-Interface Safe Compact Module (K45F)
• Digital Safe Inputs: 2 (safety-rated, mechanical sensor compatible)
• Connection Type: 2 × M12 sockets (screw terminals)
• Supported AS-Interface Voltage: 26.5 … 31.5 V DC
• Maximum Input Current (AS-Interface line): 45 mA
• Addressing: Front-accessible; module retains address after re-addressing
• Protection Rating: IP67 (suitable for field and harsh industrial environments)
• Ambient Operating Temperature: –25 °C … +70 °C
• Storage Temperature: –40 °C … +85 °C
• Housing Dimensions: Width 45 mm, Height 80 mm, Depth 34 mm
• Mounting Method: DIN rail or wall mounting via dedicated AS-Interface mounting plate
• Sensors Supported: Mechanical switching contacts (e.g. emergency-stop button, safety-door switch, area-guard sensor)

Compliance & Certifications

• Compliant with AS-Interface safety module standards
• Certified for industrial safety integration — suitable for safety-related applications
• Compatible with AS-Interface safety master and safe network configuration
• Designed and manufactured by Siemens for global industrial use

Applications

The 3RK1205-0BQ00-0AA3 is used in safety-critical automation systems for emergency-stop circuits, safety-door monitoring, guarded-area sensors, and other safety inputs within AS-Interface networks. It is ideal for machine safety installations, production lines, packaging machines, conveyor systems and any application requiring reliable, safe digital input detection under tough environmental conditions.