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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TK2821-1CB30 |
| Alternative Part Number | 3TK28211CB30 |
| Manufacturer | Siemens |
| Category | General Automation |
| Weight | 0.200 kg |
| Height | 106.00 mm |
| Width | 28.00 mm |
| Depth | 124.00 mm |
| Commodity Code | 853649 |
| Part Description | The Siemens 3TK2821-1CB30 is a safety relay with relay enabling circuits (EC) operating at 24V. It is designed with a screw terminal for secure and reliable connections. |
| Short Description | Safety relay with relay enabling circuits (EC) 24V |
| Operating Temperature | -25 … +60 °C |
| Storage Temperature | -40 … +80 °C |
| Insulation Voltage | 300 V |
| Protection Class | IP40 for the casing, IP20 for the connection terminal |
| Resistance to Vibrations | 5 ... 500 Hz: 0,075 mm |
| Resistance to Shocks | 8g / 10 ms |
| Resistance to Surge Voltage | 4000 V |
| Safety Integrity Level (SIL) | SIL1 |
| Performance Level (PL) | d |
| Category | 3 |
| Hardware Fault Tolerance | 1 |
| Safety Device Type | Type A |
| Number of Sensor Inputs | 1 |
| Number of Outputs | 1 NC contact for reporting function, 3 NO contacts for safety-related instantaneous switching |
| Stop Category | 0 |
The Siemens 3TK2821-1CB30 is a robust safety relay designed to ensure the highest level of safety in industrial automation processes. This compact device operates at 24V AC and features a screw terminal for secure connections. It is specifically designed to handle emergency stop and protective door monitoring functions, making it an essential component in maintaining a safe working environment.
The 3TK2821-1CB30 is part of the renowned SIRIUS product line from Siemens, known for its reliability and performance. It has a width of 28mm, a height of 106mm, and a depth of 124mm, making it a compact solution for safety applications where space is at a premium.
This safety relay is suitable for Class A environments and has a Safety Integrity Level (SIL) of 1 according to IEC 61508, and a Performance Level (PL) of 'd' according to ISO 13849-1. It is also certified by TÜV, UL, and BG BIA, ensuring its compliance with international safety standards.
The Siemens 3TK2821-1CB30 safety relay is a reliable and efficient solution for your safety needs in industrial automation. Its robust design and advanced safety features make it a trusted choice for professionals in the field.
Commonly Asked Questions
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Frequently Asked Questions
What is the purpose of this safety relay?
The Siemens safety relay is designed to ensure safety in industrial automation systems. It is used in emergency stop units and safety doors to prevent accidents and ensure the safe operation of machinery.
What are the technical specifications of this safety relay?
This safety relay operates at 24V AC/DC and has a width of 22.5mm. It features screw terminals and has an instantaneous enabling circuit of 3S. It is designed to be finger-safe and has an insulation voltage rated at 300V. It can operate in temperatures ranging from -25 to +60 degrees Celsius.
What is the protection class of this safety relay?
The Siemens safety relay has an enclosure protection class of IP40 and a terminal protection class of IP20. This means it is protected against solid objects over 1mm and is not protected against water.
Can this safety relay be used as an expansion unit?
Yes, the 3TK2821-1CB30 safety relay can be used as an expansion unit up to a maximum error safety integrity level (SIL) class of 3.
What is the weight and dimensions of this safety relay?
The Siemens safety relay weighs 0.200 kg and has dimensions of 106mm in height, 28mm in width, and 124mm in depth.
What is the commodity code of this safety relay?
The commodity code for the Siemens safety relay is 853649.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
