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Technical model data should be checked against manufacturer material where available.
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IndGearIndustrial automation parts, verified before order approval.Request quote3TK2821-1CB3catalog record
Siemens / 3TK2821-1CB30
Siemens 3TK2821-1CB30 Safety Relay
Siemens 3TK2821-1CB30 supports machine-safety service, guarding circuits, and safety spare review; confirm safety rating, reset or monitoring logic, connector or wiring details and USD RFQ context before approval.
- Brand
- Siemens
- SKU
- 3TK2821-1CB30
- Category
- Safety Components
- Condition
- new
- Price status
- verified
- Sources
- 7 records
Product overview
Siemens 3TK2821-1CB30 is listed as a Safety Components safety relay record for SKU-led sourcing. The current record shows new, has a verified USD price reference, and must still go through RFQ review so source, condition, warranty, and shipping terms are confirmed before order approval.
Technical notes
Siemens 3TK2821-1CB30 is maintained as a safety relay for machine-safety service, guarding circuits, and safety spare review. It is grouped with SIRIUS / 3TK safety relay records so buyers can compare like-for-like spares instead of treating it as an anonymous import line. The card is treated as rich because source-backed structured data supports the identity and specification depth. Current structured facts include compatible system Siemens machine safety relay family; protection rating IP40; temperature range -25 ... +60 C; series 3TK. USD price context is available as a reference observation, while final commercial terms still require RFQ confirmation. Before approval, confirm safety rating, reset or monitoring logic, connector or wiring details, circuit drawing, quantity, preferred condition, and destination country. The record does not claim authorized distribution, guaranteed stock, warranty, lead time, or final compatibility without operations review.
Key features
- Manufacturer part number: 3TK2821-1CB30
- Manufacturer: Siemens
- Category: Safety Components
- Type: safety relay
- Family/context: SIRIUS / 3TK safety relay
- compatible system: Siemens machine safety relay family
- protection rating: IP40
- temperature range: -25 ... +60 C
Applications
- machine safety maintenance
- guarding circuit service
- safety spare review
Verified specifications
| series | 3TK |
|---|---|
| weight | 0.247 kg |
| function | safety circuit monitoring or interlocking |
| approvals | UL |
| descriptor | control relay |
| dimensions | 22.5 x 120 x 120 mm |
| source basis | manufacturer-owned catalog/datasheet reference plus safe SKU-family classification |
| source brand | Siemens |
| safety family | 3TK |
| product family | SIRIUS / 3TK safety relay |
| compatible system | Siemens machine safety relay family |
| protection rating | IP40 |
| safe product type | safety relay |
| supplier keywords | Siemens, Реле 3TK2821-1CB30, Реле, 3TK2821-1CB30 |
| temperature range | -25 ... +60 C |
| validated category | Safety Components |
| category confidence | medium |
| product designation | safety relays |
| verified spec notes | Structured fields were extracted from the exact Siemens manufacturer-owned technical datasheet PDF. No stock, warranty, authorization, lead-time, or compatibility claim is inferred. |
| verified spec fields | approvals, dimensions, manufacturer_part_number, product_designation, product_type_designation, protection_rating, temperature_range, weight |
| verified spec method | siemens_teddatasheet_pdf_parser_v1 |
| brand content cleanup at | 2026-05-20T13:27:36.003Z |
| manufacturer part number | 3TK2821-1CB30 |
| product type designation | 3TK28 |
| verified spec source url | https://support.industry.siemens.com/teddatasheet/?caller=SIOS&format=pdf&language=en&mlfbs=3TK2821-1CB30 |
| normalized category signal | Safety Components |
| url evidence content source | manufacturer_owned_url |
| verified spec field sources | [object Object] |
| brand content cleanup method | a_plus_plus_sbo_content_cleanup_v1 |
| verified spec conflicts skipped | [object Object] |
| url evidence content enriched at | 2026-05-20T09:02:33.138Z |
Source context
References used before quote approval
3 records
External price and availability observations are RFQ context, not guaranteed stock or final sale price.
Source 1Source 2Source 3To verify
Raw supplier/import notes are preserved for manager review before quote approval.
FAQ
Is Siemens 3TK2821-1CB30 available for immediate shipment?
Availability must be confirmed during RFQ because source, condition, stock location, and destination can change.
Can I request used or refurbished condition?
Yes. Include required condition and quantity in the RFQ so the team can verify available options.
Is this an authorized distributor page?
No unsupported authorization claim is made here. IndGear operates as an independent supplier marketplace unless specific authorization is verified.
RFQ control path
Turn an exact SKU into an approved purchase path.
IndGear reviews source, condition, lead time, warranty terms, and USD quote context before your team commits to the order.
- 01Submit SKU / BOMExact model, quantity, condition, destination
- 02Verify sourceSupplier signal, condition, references
- 03Review quoteUSD price, lead time, warranty terms
- 04Approve orderFinal confirmation before purchase
Quote-only sourcingRequest a USD quote
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