steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
3 weeks ago
3SK1121-1AB40
Siemens 3SK1121-1AB40 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3SK1121-1AB40 is a versatile safety relay designed for use in various industrial automation applications. This reliable and efficient component ensures the safe operation of machinery and equipment by monitoring safety-related circuits and sensors. With a compact design measuring 22.5mm in width, 100mm in height, and 121.6mm in depth, the 3SK1121-1AB40 can be easily integrated into a wide range of systems.
Featuring a single-channel or two-channel sensor input, this safety relay is compatible with both floating and non-floating sensors, as well as magnetically operated switch monitoring. It also supports cross-circuit detection, startup testing, antivalent sensors, and two-hand switches. The 3SK1121-1AB40 offers a Safety Integrity Level (SIL) of 3 and a Performance Level (PL) of e, according to EN ISO 13849-1.
The control supply voltage is rated at 24V DC, with an operating range factor of 0.8 to 1.2. The relay can be mounted in any position and features screw-type terminals for secure electrical connections. It is suitable for use with safety switches, press controls, and various safety-related circuits.
The Siemens 3SK1121-1AB40 safety relay is a reliable and efficient solution for ensuring the safe operation of your industrial automation systems.
Featuring a single-channel or two-channel sensor input, this safety relay is compatible with both floating and non-floating sensors, as well as magnetically operated switch monitoring. It also supports cross-circuit detection, startup testing, antivalent sensors, and two-hand switches. The 3SK1121-1AB40 offers a Safety Integrity Level (SIL) of 3 and a Performance Level (PL) of e, according to EN ISO 13849-1.
The control supply voltage is rated at 24V DC, with an operating range factor of 0.8 to 1.2. The relay can be mounted in any position and features screw-type terminals for secure electrical connections. It is suitable for use with safety switches, press controls, and various safety-related circuits.
The Siemens 3SK1121-1AB40 safety relay is a reliable and efficient solution for ensuring the safe operation of your industrial automation systems.
| Specification | Description |
|---|---|
| Part Number | 3SK1121-1AB40 |
| Alternative Part Number | 3SK11211AB40 |
| Manufacturer | Siemens |
| Category | General Automation |
| Installation Environment (EMC) | Suitable for Class A environments only |
| Overvoltage Category | 3 |
| Degree of Pollution | 3 |
| Reference Code (DIN EN 81346-2) | F |
| Power Loss (max) | 2 W |
| Number of Sensor Inputs | 1 (1-channel or 2-channel) |
| Cascading Design | Yes |
| Safety-related Wiring of Inputs | Single-channel and two-channel |
| Cross-circuit-proof | Yes |
| Safety Integrity Level (SIL) | 3 (acc. to IEC 61508) |
| Performance Level (PL) | e (acc. to EN ISO 13849-1) |
| Category (EN ISO 13849-1) | 4 |
| Safe Failure Fraction (SFF) | 99 y |
| PFHD (EN 62061) | 0.0000000025 1/h |
| PFDavg (IEC 61508) | 0.000007 |
| T1 Value (IEC 61508) | 20 y |
| Hardware Fault Tolerance (IEC 61508) | 1 |
| Safety Device Type (IEC 61508-2) | Type B |
| Number of Outputs | 1 NC contact (instantaneous), 3 NO contacts (safety) |
| Stop Category (DIN EN 60204-1) | 0 |
| Input Design | Cascading input, feedback input, start input |
| Electrical Connection | Plug-in socket (not included) |
| Operating Frequency (max) | 360 1/h |
| Switching Capacity Current (NO contacts) | At DC-13 |
What is the protection class of the enclosure?
The protection class of the enclosure for the 3SK1121-1AB40 is IP20.
What is the operating temperature range for this part?
The operating temperature range for the 3SK1121-1AB40 is -25°C to +60°C.
What is the maximum installation altitude for this part?
The maximum installation altitude for the 3SK1121-1AB40 is 2,000 meters above sea level.
What is the Safety Integrity Level (SIL) of this part?
The Safety Integrity Level (SIL) of the 3SK1121-1AB40 is 3, according to IEC 61508.
What is the Performance Level (PL) of this part?
The Performance Level (PL) of the 3SK1121-1AB40 is e, according to EN ISO 13849-1.
How many sensor inputs does this part have?
The 3SK1121-1AB40 has 1 sensor input, which can be used for single-channel or two-channel configurations.
What is the maximum operating frequency for this part?
The maximum operating frequency for the 3SK1121-1AB40 is 360 operations per hour.
How many safety-related NO contacts does this part have?
The 3SK1121-1AB40 has 3 safety-related NO (normally open) contacts.
Does this part support cascading?
Yes, the 3SK1121-1AB40 supports cascading for safety applications.
- Industrial safety systems
- Emergency stop applications
- Machine guarding systems
- Safety door monitoring
- Light curtain integration
- Two-hand control systems
- Conveyor safety systems
- Robotic work cell safety
- Safety interlock systems
- Safety mat integration
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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Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
2 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
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Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
2 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
3 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
4 months ago
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