USED SIEMENS 3TK2943-0BB4

The Siemens 3TK2943-0BB4 Safety Combination Contactor is a reliable industrial safety control device designed for monitoring and controlling safety circuits in automated machinery and equipment. Operating on a 24V DC supply, this unit is part of Siemens’ trusted SIRIUS safety relay series and is engineered to help ensure safe machine shutdown and prevent unexpected restarts. It is commonly used in conjunction with emergency stop buttons, safety gate switches, and light curtain systems, providing dependable control in applications where operator safety is critical.
This safety contactor module features multiple safety-rated relay outputs and integrated monitoring functionality, allowing it to supervise external contactors and switching devices through feedback loops. Its robust design supports high safety standards, making it suitable for use in industrial environments requiring compliance with modern machine safety regulations. The compact DIN-rail mountable design allows for easy integration into control panels, while its durable construction ensures long service life in demanding conditions.
Ideal for use in manufacturing plants, packaging machinery, automation systems, and material handling equipment, the Siemens 3TK2943-0BB4 is a dependable solution for enhancing machine safety and operational reliability. Whether used as a replacement part or integrated into a new system, it provides consistent performance in safeguarding both personnel and equipment.
 
Key Features
Siemens 3TK2943-0BB4 Safety Combination Contactor
24V DC operating voltage
Part of Siemens SIRIUS safety relay family
Multiple safety relay outputs 
Integrated feedback monitoring for external devices
DIN rail mountable design
Compact and durable industrial construction
Applications
Emergency stop (E-Stop) circuits
Safety gate and door monitoring
Light curtain safety systems
Machine safeguarding systems
Industrial automation and control panels
Packaging and material handling equipment
Benefits
Enhances operator and equipment safety
Helps prevent unintended machine restart
Reliable performance in industrial environments
Easy integration into existing systems
Suitable for high safety-level applications
Product Details
Brand: Siemens
Model: 3TK2943-0BB4
Type: Safety Combination Contactor / Safety Relay Module
Coil Voltage: 24V DC
Mounting: DIN Rail

Weight: 7 lbs
Dimensions: 10 × 8 × 7 in