Siemens Safety position switch, actuated, 2NC+1NO Part number 3SF1324-1SD21-1BK4

Product Overview

The 3SF1324-1SD21-1BK4 is a SIRIUS safety position switch with tumbler featuring an exceptional locking force of 1300 N and ASI-safe integration. This advanced safety switch is designed with a robust plastic enclosure and provides comprehensive monitoring capabilities for both actuator and magnet functions. The device offers 5 directions of approach for flexible installation and operates with 24 V AC/DC magnet voltage without requiring additional 24 V supply. With IP69 protection rating and spring-locked operation, this safety switch ensures reliable monitoring of moving protection equipment and provides secure locking for protective doors, covers, and safety barriers in industrial applications.

Key Features & Specifications

• Safety Function: Safety position switch with tumbler and solenoid locking
• Locking Force: 1300 N (high holding force for secure door retention)
• Approach Directions: 5 directions of approach for flexible installation
• Magnet Voltage: 24 V AC/DC (no additional 24 V supply required)
• ASI-safe Integration: Built-in ASI-safe communication capability
• Contact Configuration:
  • Channel 1 (Actuator): 2 NC according to 2v2 evaluation principle
  • Channel 2 (Magnet): 1 NC
  • Monitoring actuator: 2 NC/1 NO
  • Monitoring magnet: 2 NC/1 NO
• Enclosure: Robust plastic housing with M12 plug connection
• Protection Rating: IP69 (highest degree of protection per IEC 60529)
• Locking Mechanism: Spring-locked with auxiliary release on front

Technical Data

• Housing Material: High-grade plastic enclosure for durability
• Connection: M12 plug for secure electrical connection
• Net Weight: 0.539 kg
• Packaging Dimensions: 61.50 x 213.00 x 84.00 mm
• Operating Voltage: 24 V AC/DC magnet voltage
• Safety Evaluation: 2v2 evaluation principle for maximum safety
• Auxiliary Release: Front-mounted manual release mechanism
• Communication: ASI-safe integrated for safe fieldbus communication

Contact Performance

• Actuator Monitoring:
  • 2 Normally Closed (NC) contacts
  • 1 Normally Open (NO) contact
  • 2v2 evaluation principle for enhanced safety
• Magnet Monitoring:
  • 2 Normally Closed (NC) contacts
  • 1 Normally Open (NO) contact
  • 1 NC contact in Channel 2
• Switching Reliability: Industrial-grade contact performance
• Contact Life: High-cycle switching capability for continuous operation

Safety Features

• Solenoid Locking: Electromagnetic tumbler keeps doors securely locked
• ASI-safe Communication: Integrated safe fieldbus communication
• Dual Channel Monitoring: Separate monitoring for actuator and magnet functions
• 2v2 Evaluation: Advanced safety evaluation principle for maximum reliability
• Spring-Locked Operation: Ensures fail-safe locking mechanism
• Auxiliary Release: Manual emergency release accessible from front
• IP69 Protection: Highest level of protection against dust and high-pressure water jets
• Anti-Tamper Design: Secure design prevents unauthorized manipulation

Standards & Compliance

• Protection Standard: IP69 per IEC 60529
• Safety Standards: Designed for high-level safety applications
• Product Lifecycle: PM300 Active Product status
• Export Control: AL: N / ECCN: N classification
• Environmental: RoHS directive compliance since 01.03.2017
• Waste Management: WEEE (2012/19/EU) Take-Back Obligation compliant
• Country of Origin: Germany
• Product Classification: Class A standard product with return eligibility

Applications

The 3SF1324-1SD21-1BK4 is specifically designed for high-security applications requiring robust door locking and comprehensive safety monitoring. Ideal applications include industrial machinery guards, pharmaceutical equipment access panels, food processing safety barriers, and hazardous area enclosures where IP69 protection is essential. The ASI-safe integration makes it perfect for distributed safety systems requiring fieldbus communication. The 1300 N locking force ensures doors remain securely closed even under high mechanical stress, making it suitable for heavy-duty industrial environments, automated production lines, and safety-critical applications where unauthorized access must be prevented.

Important Notes

• Actuator Required: Matching separate actuator 3SE5000-0AV0 or 3SE5000-0AW5 must be ordered separately
• ASI-safe Integration: Built-in ASI-safe communication capability for safe fieldbus applications
• Power Requirements: 24 V AC/DC supply for magnet operation (no additional 24 V supply needed)
• Installation: Five approach directions provide maximum installation flexibility
• Emergency Access: Front-mounted auxiliary release mechanism for emergency situations
• High Protection: IP69 rating suitable for washdown environments and harsh conditions

Package Information

• EAN: 4011209944824
• UPC: 887621848842
• Packaging Dimensions: 61.50 x 213.00 x 84.00 mm
• Packaging Quantity: 1 piece

REACH Compliance Information

This product contains substances from the REACH candidate list in concentrations higher than 0.1% weight by weight: Lead, Lead monoxide, 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol, and Diboron trioxide. Based on current available information, these substances do not pose any risk when the product is used as intended, including disposal.

Download existing graphical data for this product:

• Product Details - Siemens Industry Mall
• Technical Data Sheet (PDF)
• Product Support - Siemens Industry Online Support