Siemens 3SK1121-1CB42 is a circuit protection device operating at 24 V DC. It is designed for reliable control and safety in electrical circuits. Typical applications include industrial automation and motor control systems.
| Type |
Circuit protection |
| Depth |
121.6mm |
| Dim |
(W x H x D) 22.5 x 100 x 121.6 mm |
| Evaluation inputs |
One- and two-channel |
| Height |
100mm |
| Manufacturer part # |
3SK11211CB42 |
| Max. temperature |
60°C |
| Min. temperature |
-25°C |
| Misc Attribute |
3SK1121-1CB42 |
| Model |
Other |
| Nominal voltage |
24V DC |
| Number of outputs, safety related, delayed, with contact |
0 |
| Number of outputs, safety related, undelayed, with contact |
0 |
| Number of outputs, signalling function, delayed, with contact |
0 |
| Number of outputs, signalling function, undelayed, with contact |
0 |
| Performance level according to EN ISO 13849-1 |
Level e |
| SIL according to IEC 61508 |
3 |
| Stop category according to IEC 60204 |
0 + 1 |
| Suitable for monitoring of emergency-stop circuits |
TRUE |
| Suitable for monitoring of magnetic switches |
TRUE |
| Suitable for monitoring of optoelectronic protection equipment |
TRUE |
| Suitable for monitoring of position switches |
TRUE |
| Suitable for rail mounting |
FALSE |
| Type of electric connection |
Screw connection |
| Voltage type for actuating |
DC |
| Width |
22.5mm |
| With approval according to UL |
TRUE |
| With detachable clamps |
FALSE |
| With feedback circuit |
TRUE |
| With muting function |
FALSE |
| With start input |
TRUE |
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