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Siemens
3TK2820-1CB30
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Check similar products or call us on +44 20 4570 3439 for assistance
This part is currently sold out
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TK2820-1CB30 |
| Alternative Part Number | 3TK28201CB30 |
| Manufacturer | Siemens |
| Product Type | Safety Relay |
| Supply Voltage | 24 V dc |
| Mounting Type | Screw Mount |
| Dimensions | 22.6 x 118 x 103.6 mm |
| Product Family | SIRIUS |
| Design | For EMERGENCY-STOP units |
| Protection Class IP | IP40 for enclosure, IP20 for terminal |
| Insulation Voltage | Rated at 300 V |
| Ambient Operating Temperature Range | -25 ... +60 °C |
| Storage Temperature Range | -40 ... +80 °C |
| Air Pressure | 90 ... 106 kPa according to SN 31205 |
| Relative Humidity | 10 ... 95 % |
| Installation Altitude | Up to 2000 m above sea level |
| Vibration Resistance | 5 ... 500 Hz: 0.75 mm |
| Shock Resistance | 15g / 11 ms |
| Surge Voltage Resistance | Rated at 4000 V |
| EMC Emitted Interference | Compliant with IEC 60947-5-1, IEC 61000 |
| Safety Integrity Level (SIL) | SIL3 according to IEC 61508 |
| Performance Level (PL) | PL e according to EN ISO 13849-1 |
| Category | Category 4 according to EN ISO 13849-1 |
| Hardware Fault Tolerance | According to IEC 61508 |
| Number of Sensor Inputs | 1-channel or 2-channel |
| Safety-Related Wiring of Inputs | Single-channel and two-channel |
| Number of Outputs | 3 NO contacts for safety-related instantaneous contact, 1 NC contact for signalling function |
| Stop Category | 0 according to DIN EN 60204-1 |
| Certificates/Approvals | TÜV certificate, UL approval |
The Siemens 3TK2820 Series Safety Relay is a vital component designed to ensure the safe operation of machinery in various industrial settings. This particular model, the 3TK2820-1CB30, operates with a 24 V dc supply and is engineered for screw mounting, making it both versatile and easy to install. With dimensions of 22.6 x 118 x 103.6 mm, it is compact enough to fit into a range of control cabinets and panels.
This safety relay is specifically tailored for use with emergency stop units, providing immediate response to potential hazards by initiating a safe and controlled shutdown of machinery. It features a robust design that meets the requirements for IP40 protection class for the enclosure and IP20 for the terminals, ensuring it is safeguarded against particulate ingress and accidental contact.
The 3TK2820-1CB30 is equipped with three normally open (NO) contacts for safety-related instantaneous switching and one normally closed (NC) contact for signalling functions. It supports both single-channel and two-channel wiring for sensor inputs, enhancing its flexibility for integration into safety systems. The relay is also designed with cross-circuit proofing, adding an extra layer of security to your safety circuitry.
In terms of safety performance, this model achieves a Safety Integrity Level (SIL) of 3 according to IEC 61508, a Performance Level (PL) of e according to EN ISO 13849-1, and a Category 4 according to the same standard. These ratings indicate a high level of reliability and safety for the protection of personnel and equipment.
The 3TK2820-1CB30 is suitable for a variety of safety applications, including protective door monitoring, emergency-off function, and position switch monitoring. Its ability to monitor floating sensors and safety-related circuits makes it a versatile choice for a wide range of industrial safety requirements.
With its combination of compact design, robust safety features, and flexible application, the Siemens 3TK2820-1CB30 Safety Relay is an essential component for any industrial safety system, contributing to the maintenance of high safety standards while ensuring operational efficiency.
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Frequently Asked Questions
What is the voltage rating for this safety relay?
The safety relay operates at a control supply voltage of 24 V AC/DC.
Can this safety relay be used for emergency stop functions?
Yes, the safety relay is designed for use with EMERGENCY-STOP units and includes an EMERGENCY-OFF function.
What are the dimensions of this safety relay?
The dimensions of the safety relay are 22.5 mm in width, 103.6 mm in height, and 118 mm in depth.
What type of connections does this safety relay support?
The safety relay supports screw-type terminal connections.
What is the maximum operating altitude for this safety relay?
The safety relay can be operated at a maximum altitude of 2,000 metres above sea level.
Is this safety relay suitable for use in residential environments?
No, this product is suitable for Class A environments only and may cause radio-frequency interference in residential environments.
What is the insulation voltage rated value for this safety relay?
The insulation voltage rated value for the safety relay is 300 V.
What is the product's IP rating?
The enclosure has an IP40 rating, and the terminal has an IP20 rating, providing protection against solid objects and fingers.
What is the maximum switching capacity for the relay outputs?
The maximum switching capacity for the relay outputs at AC-15 is 4 A for both 24 V and 230 V.
How many safety-related instantaneous contacts does this relay have?
The 3TK2820-1CB30 safety relay has 3 safety-related instantaneous NO contacts.
What certifications does this safety relay hold?
The safety relay holds TÜV and UL certifications, ensuring compliance with industry safety standards.
Can this relay be used for protective door monitoring?
Yes, it is suitable for protective door monitoring applications.
What is the mechanical service life of this safety relay?
The mechanical service life of the relay is typically 10 million switching cycles.
Does this safety relay have a feedback input?
Yes, it includes a feedback input for monitoring connected devices.
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