Siemens
Siemens Safety relay 3TK2825-1AL20
['Home', 'Siemens', 'SIRIUS', 'Safety Relays', '3TK2825-1AL20'] Need Siemens 3TK2825-1AL20? Safety relay for …
Specifications
| Brand | Siemens |
|---|---|
| Model Number | 3TK2825-1AL20 |
| Official Product Name | SIRIUS Safety Relay with Enabling Circuits (EC), 24 V AC/DC |
| Applicable System | Machine safety / emergency-stop and monitoring circuits |
| Product Type | Safety relay (electromechanical) |
| Equivalent Standard | Contact supplier for cross-reference and alternative models |
| Product Status | Contact for availability |
| Lifecycle note | Commercialized (verify current availability with supplier) |
| Width | 22.5 mm |
| Connection type | Screw terminal |
| Safety contacts (EC instantaneous) | 3S |
| Auxiliary contact (MK) | 1 NC |
| Safety level | Basic up to SIL CL 1 / PL c; expansion up to SIL CL 3 / PL e |
| Start mode | Autostart / Manual start |
| Weight | Contact supplier for exact specifications (similar units ~0.5 kg) |
| Country of origin | Germany (per distributor listing) |
| Supply voltage | 24 V AC/DC |
Product Description
Basic Product Information
- Compact 22.5 mm width, screw terminal connection
- Enabling circuits: 3 safety contacts (EC instantaneous), 1 NC (MK)
- Basic unit up to SIL CL 1 / PL c; expansion unit up to SIL CL 3 / PL e
- Autostart / manual start configurable
- 24 V AC/DC coil rating
Technical Specifications
Version & Model Difference
['3TK2825-1AL20 is the 24 V AC/DC, screw-terminal, 22.5 mm SIRIUS safety relay', 'Other 3TK28 variants differ in voltage, terminal type and contact configuration', 'Select based on required safety level (basic vs expansion) and wiring']
Application Scenarios
- Emergency-stop and safety door monitoring circuits
- Machine guarding and stop-category control
- Retrofit and new machine safety installations
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