Siemens 3TK2826-1BB40 SIRIUS Safety Relay - 4 NO
Siemens 3TK2826-1BB40 SIRIUS safety relay with 4 NO instantaneous enabling circuits.
The Siemens 3TK2826-1BB40 is a SIRIUS safety relay designed for reliable machine safety applications. It operates on 24V DC and features a 45mm width with screw terminals. This basic device offers 4 instantaneous normally open (NO) enabling circuits and 3 safety contacts (SC), with no delayed enabling circuits. It achieves a maximum PL of d and SIL of 3 according to EN 13849-1 and IEC 61508, respectively.
This safety relay is suitable for use in various industrial automation scenarios, including machine building, material handling, and process control, where emergency stop functions and safety interlocking are critical. It is designed to ensure the safe operation of machinery by monitoring safety-related inputs and controlling output contacts to bring machinery to a safe state.
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| Voltage | 24V DC |
| Width | 45 mm |
| Terminals | Screw |
| Enabling Circuits (EC) Instantaneous | 4 NO |
| Enabling Circuits (EC) Delayed | 0 |
| Safety Contacts (SC) | 3 |
| Functions | 8 |
| Max PL | d |
| Max SIL | 3 |