3TK2820-2CB30

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The Siemens 3TK2820-2CB30 is a robust safety relay designed to enhance the safety and reliability of industrial automation systems. Operating at 24 V AC/DC, this safety relay is equipped with relay enabling circuits, making it an ideal choice for emergency stop applications. Its compact design, with dimensions of 22.5mm in width, allows for easy integration into existing control panels. The unit features spring-loaded terminals for secure and efficient electrical connections.

Engineered to meet high safety standards, the 3TK2820-2CB30 supports both single-channel and two-channel safety-related wiring, ensuring flexibility in various applications. It boasts a Safety Integrity Level (SIL) 3 rating according to IEC 61508 and a Performance Level (PL) e according to ISO 13849-1, making it suitable for demanding safety requirements. The relay includes three normally open (NO) contacts for safety-related instantaneous switching and one normally closed (NC) contact for signalling functions.

With a rated insulation voltage of 300 V and an IP40 protection class for the housing, this safety relay is designed to withstand challenging industrial environments. It operates efficiently within a temperature range of -25°C to +60°C and can be mounted in any position, offering versatility in installation. The Siemens 3TK2820-2CB30 is a reliable choice for safeguarding machinery and ensuring operational safety in industrial settings.
Specification Description
Part Number 3TK2820-2CB30
Manufacturer Siemens
Product Brand Name SIRIUS
Product Designation Safety Relay with Relay Enabling Circuits
Voltage 24 V AC/DC
Design For EMERGENCY-STOP units
Protection Class (Housing) IP40
Protection Class (Terminal) IP20
Insulation Voltage 300 V
Ambient Temperature -25°C to +60°C during operation
Installation Altitude Up to 2,000 m above sea level
Safety Integrity Level (SIL) SIL3 according to IEC 61508
Performance Level (PL) PL e according to ISO 13849-1
Category 4 according to ISO 13849-1
Number of Outputs 3 NO safety-related instantaneous switching, 1 NC for reporting function
Mounting Type Snap-on mounting
Dimensions (W x H x D) 22.5 mm x 111.2 mm x 118 mm
Connection Type Spring-loaded terminals
Operating Cycles Maximum 2,000 per hour
Electrical Operating Cycles 200,000 typical
Mechanical Operating Cycles 10,000,000 typical
Certificates/Approvals UL, CSA, TÜV
Product Description The Siemens 3TK2820-2CB30 is a robust safety relay designed for emergency stop applications, ensuring high reliability and safety in industrial environments. With its compact design and easy installation, it provides efficient safety monitoring and control, meeting stringent international safety standards. Ideal for use in various automation systems, it offers dependable performance and long operational life.

What is the primary function of this safety relay?

The primary function of the Siemens 3TK2820-2CB30 safety relay is to provide safety-related control functions, such as emergency stop and protective door monitoring, ensuring the safe operation of machinery.

What type of voltage does this safety relay support?

This safety relay supports both AC and DC voltage, specifically designed for a control supply voltage of 24 V AC/DC.

What are the dimensions of this safety relay?

The Siemens 3TK2820-2CB30 safety relay has dimensions of 22.5 mm in width, 111.2 mm in height, and 118 mm in depth.

What is the maximum operating temperature for this safety relay?

The maximum operating temperature for this safety relay is 60°C, while it can be stored at temperatures ranging from -40°C to +80°C.

What is the protection class of this safety relay?

The housing of the Siemens 3TK2820-2CB30 safety relay has a protection class of IP40, and the terminal has a protection class of IP20.

How many safety-related outputs does this relay have?

This safety relay features three safety-related normally open (NO) contacts for instantaneous switching.

Is this safety relay suitable for use in residential environments?

No, this product is suitable for Class A environments only and may cause undesired radio-frequency interference in residential environments.

What is the Safety Integrity Level (SIL) rating of this relay?

The Siemens 3TK2820-2CB30 safety relay is rated at SIL3 according to IEC 61508, indicating a high level of safety integrity.

Can this safety relay be used for monitoring emergency stop circuits?

Yes, the Siemens 3TK2820-2CB30 safety relay is designed for use in emergency stop circuits, providing reliable safety functions.

What type of mounting does this safety relay support?

This safety relay supports snap-on mounting, allowing for easy installation in various control panels.

  • Emergency stop applications in industrial environments
  • Monitoring and controlling safety circuits in machinery
  • Integration into safety systems for protective door monitoring
  • Use in systems requiring automatic and monitored start functions
  • Safety-related switching in automation systems
  • Position switch monitoring in manufacturing processes
  • Monitoring of magnetically operated switches in safety applications
  • Ensuring compliance with safety standards in machinery operations

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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