Siemens 3SK1211-1BB40

Overview

The Siemens 3SK1211-1BB40 is a vital component in modern industrial safety systems, representing a state-of-the-art solution for expanding safety-related circuits. As part of the renowned SIRIUS safety relay series, this output expansion module is engineered to provide additional relay enabling circuits, thereby enhancing the functional scope and reliability of your safety applications. Designed for seamless integration, it offers four normally open (NO) contacts for critical safety functions and one normally closed (NC) contact specifically for signaling purposes, ensuring comprehensive monitoring and control within your operational environment. Operating efficiently on a 24 V DC control supply voltage, the module guarantees stable performance. Its incorporation of secure screw terminal connections simplifies installation and provides robust wiring, making the Siemens 3SK1211-1BB40 an indispensable asset for robust and compliant safety solutions.

Key Features

• Enhanced Safety Expansion: Provides 4 normally open (NO) contacts for critical safety circuit expansion.
• Dedicated Signaling: Includes 1 normally closed (NC) contact for clear and reliable signaling of operational status.
• Optimal Control Voltage: Operates efficiently at a 24 V DC control supply voltage for consistent performance.
• Secure Connectivity: Equipped with robust screw terminals for straightforward and highly secure wiring.
• Versatile Application: Suitable for a wide range of safety-related circuits, enhancing system flexibility.
• Configurable Operation: Offers flexibility for either undelayed or delayed operation based on application needs.
• Industrial Durability: Engineered to withstand harsh industrial conditions, ensuring long-term reliability.

Technical Specifications

The Siemens 3SK1211-1BB40 output expansion module boasts impressive technical specifications designed to meet stringent industrial demands:

• Product Type: Safety Relay Output Expansion
• Part Number: 3SK1211-1BB40
• Insulation Voltage: 300 V
• Degree of Pollution: 3
• Overvoltage Category: III
• Surge Voltage Resistance: 4,000 V
• Protection Class: IP20
• Shock Resistance: 10g / 11 ms
• Vibration Resistance: 5 to 500 Hz, 0.75 mm
• Maximum Operating Frequency: 360 operations per hour
• Mechanical Service Life: Approximately 10 million operating cycles
• Thermal Current (Ith): 5 A
• Ambient Operating Temperature: -25°C to +60°C
• Dimensions (H x W x D): 100 mm x 22.5 mm x 121.6 mm
• Weight: Approximately 0.224 kg
• Safety Standards Compliance:
  • IEC 62061 (SIL): SIL 3
  • ISO 13849-1 (PL): PL e, Category 4
  • IEC 61508 (SIL): SIL 3

Applications

• Industrial Automation Systems: Significantly enhances the capabilities of existing safety circuits by providing robust and reliable additional relay outputs for complex automation functions.
• Machine Safety Systems: Perfectly suited for expanding safety relay outputs in diverse machinery, addressing applications that require multiple safety-related switching contacts to ensure operator and equipment protection.
• Process Control Environments: An ideal solution for applications within process control that necessitate dependable safety relay expansions to maintain operational safety and compliance with regulatory standards.
• Emergency Stop Circuits: Can be integrated into complex emergency stop systems to manage multiple shutdown sequences or signals efficiently.
• Robotics Safety: Essential for expanding safety functionality in robotic work cells, integrating with safety PLCs to control various safety zones and mechanisms.

Why Choose This Model?

• Unmatched Reliability: Siemens is a global leader in industrial automation, and the 3SK1211-1BB40 upholds this reputation with its robust design and adherence to stringent safety standards.
• Seamless Integration: Designed as part of the SIRIUS family, it ensures effortless compatibility and integration with existing Siemens safety relay systems, streamlining your setup process.
• Compliance and Assurance: Meeting critical safety standards such as SIL 3 (IEC 62061 & IEC 61508) and PL e, Category 4 (ISO 13849-1), this module offers peace of mind and regulatory compliance.
• Versatile Functionality: With both NO and NC contacts and configurable operation, it provides the flexibility needed to adapt to a wide array of safety applications, ensuring your system is both safe and efficient.
• Durable Construction: Built to withstand demanding industrial conditions, its high shock and vibration resistance, coupled with a wide operating temperature range, guarantees long-term performance and minimal downtime.
• Optimized for Performance: The high mechanical service life and thermal current rating reflect a product engineered for continuous, high-performance operation in critical safety applications.

Order Now

Elevate your industrial safety systems with the Siemens 3SK1211-1BB40 SIRIUS Safety Relay Output Expansion Module. Its advanced features, proven reliability, and compliance with global safety standards make it the ideal choice for enhancing the safety and efficiency of your operations. Add to cart today and experience the Siemens difference in safety technology. For detailed installation guidance and further technical documentation, please refer to the official Siemens resources.