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SIEMENS 3SK1121-2CB42 Safety Relay – Compact Safety Controller
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SIEMENS 3SK1121-2CB42 Safety Relay – Compact Safety Controller
Compact and reliable safety controller for basic safety applications
| Brand | Siemens |
| Model | 3SK1121-2CB42 |
| Voltage | 24 V DC |
| Country of Origin | Germany |
| Weight | 0.2 kg |
| Dimensions | 45 x 100 x 80 mm |
| Warranty | 2 years |
| Certifications | CE, UL, CSA, TÜV, SIL 3, PL e |
| SKU / MPN | 3SK1121-2CB42 |
| What’s in the box | Safety relay, mounting instructions, connector |
| Safety Integrity Level (SIL) | SIL 3 |
| Performance Level (PL) | PL e |
| Number of Safety Outputs | 2 |
| Inputs | 2-channel |
| Response Time | < 10 ms |
| Operating Temperature | -25 to 60 °C |
Key benefits: Compact design, easy wiring, high safety integrity, cost-effective
Typical applications: Machine safety, emergency stop circuits, light curtains, two-hand controls
Order number: SIEMENS 3SK1121-2CB42 Safety Relay – Compact Safety Controller
Lifecycle: Active
Documentation: https://support.industry.siemens.com/cs/ww/en/ps/3SK1121-2CB42
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