Siemens 6ES7422-7BL00-0AB0 SIMATIC S7-400 SM 422
€130.00
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Siemens 3TK2827-1BB41 is a SIRIUS safety relay for installed machinery and control cabinets using emergency-stop or safety-related relay circuits with a 24 V DC supply. The Siemens data sheet describes a 45 mm base unit with relay enabling circuits, screw terminals and monitored start. Siemens 3TK2827-1BB41 provides two instantaneous NO safety contacts, two delayed NO safety contacts and one NC signalling contact. The delayed enabling circuits have an adjustable switch-off delay from 0.05 to 3 s, allowing use in safety circuits requiring a defined run-down time. Safety ratings include SIL3 to IEC 61508 and Performance Level e for instantaneous enabling, plus SIL2 and Performance Level d for delayed enabling; category 4 is also documented. The device supports single- or dual-channel input wiring, cross-circuit detection, a feedback input and a start input. Electrical data includes 300 V rated insulation voltage, 4,000 V impulse withstand voltage, 5 A thermal contact current and switching capacity up to 5 A at 24 V DC or 230 V AC. Additional replacement criteria include IP20 at the enclosure and terminals, finger-safe construction, any mounting orientation, screw or snap mounting, and dimensions of 44.8 x 138.5 x 120 mm. This relay suits existing SIRIUS-3TK28 circuits where contact arrangement, delay time, start logic and terminal technology must remain unchanged. The complete 3TK2827-1BB41 identifier and EN ISO 13849-1 classification must remain aligned with the safety documentation.
| Manufacturer | Siemens |
|---|---|
| Manufacturer/Order/Identification number | 3TK2827-1BB41 |
| Product series | SIRIUS 3TK28 |
| Type code | 3TK2827-1BB41 |
| Equipment type | Safety relay with relay enabling circuits |
| Control voltage | 24 V DC |
| Device width | 45 mm |
| Instantaneous safety contacts | 2 NO |
| Delayed safety contacts | 2 NO |
| Signalling contact | 1 NC |
| Switch-off delay | Adjustable from 0.05 to 3 s |
| Start function | Monitored start |
| Instantaneous safety level | SIL3 / PL e |
| Delayed safety level | SIL2 / PL d |
| Input wiring | Single- or dual-channel |
| Thermal contact current | max. 5 A |
| Connection type | Screw terminals |
| Dimensions | 44.8 x 138.5 x 120 mm |
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Yes. We provide a 14-day functional warranty for used items. The component must be functional on arrival, and the warranty applies only while the warranty seal remains undamaged. If a fault occurs within 14 calendar days, please contact us in writing. Depending on availability, we will either provide a replacement or refund the full purchase price after the item has been returned. Further details are set out in the terms and conditions supplied with our quotation.
We normally dispatch available items immediately and, in many cases, on the same working day. For urgent requirements or machine downtime, we will identify the fastest suitable option and can confirm a specific delivery window on request. Express shipping and collection from our premises are also possible by arrangement. We ship worldwide using reliable parcel and freight carriers; freight shipments may require additional preparation to ensure safe delivery.
Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.
Please note that the guarantee only applies when the warranty seal is undamaged.
If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.
Further details are provided in the terms and conditions supplied with your quotation.
We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.
Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.
We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.
Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.
As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.
Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.
Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.
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Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.
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