Product image for illustrative purposes only. Actual item may vary.
Siemens 3TK2821-1CB30
The Siemens 3TK2821-1CB30 is a safety relay designed for reliability in various applications. It operates at a rated voltage of 24 V and supports frequencies from 50 to 60 Hz, ensuring its compatibility with a wide range of systems.
This Siemens 3TK2821-1CB30 is supplied brand new by PartLogic for machine guarding, safety circuits, operator protection, production equipment and industrial compliance applications. It forms part of our Industrial automation > Safety > Safety relays range and is referenced internally as PartLogic SKU PL26801734150.
Before ordering, please confirm the manufacturer part number, product specifications and compatibility with your existing equipment. If you are replacing a failed, obsolete or hard-to-find part, contact PartLogic and we can help check suitability or source related components.
Brand New - 12 Months Warranty
$242.81
(AUD)
In Stock
| product brand name | SIRIUS |
| product designation | safety relays |
| design of the product | for EMERGENCY-STOP and safety doors |
| product type designation | 3TK28 |
| automatic start | Yes |
| light barrier monitoring | No |
| standstill monitoring | No |
| protective door monitoring | Yes |
| magnetically operated switch monitoring NC-NO | No |
| magnetically operated switch monitoring NC-NC | No |
| rotation speed monitoring | No |
| laser scanner monitoring | No |
| light array monitoring | No |
| EMERGENCY OFF function | Yes |
| monitored start-up | No |
| pressure-sensitive mat monitoring | No |
| product feature cross-circuit-proof | No |
| suitability for interaction press control | No |
| monitoring of floating sensors | Yes |
| monitoring of non-floating sensors | No |
| position switch monitoring | Yes |
| EMERGENCY-OFF circuit monitoring | Yes |
| valve monitoring | No |
| opto-electronic protection device monitoring | No |
| tactile sensor monitoring | No |
| magnetically operated switch monitoring | No |
| proximity switch monitoring | No |
| safety switch | Yes |
| safety-related circuits | Yes |
| certificate of suitability UL approval | Yes |
| insulation voltage rated value | 300 V |
| surge voltage resistance rated value | 4 000 V |
| of the enclosure | IP40 |
| of the terminal | IP20 |
| shock resistance | 8g / 10 ms |
| vibration resistance according to IEC 60068-2-6 | 5 ... 500 Hz: 0,075 mm |
| operating frequency maximum | 1 000 1/h |
| electrical endurance (operating cycles) typical | 100 000 |
| Substance Prohibitance (Date) | 05/28/2009 |
| SVHC substance name | Lead monoxide (lead oxide) - 1317-36-8 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol - 119-47-1 |
| Net Weight | 0.247 kg |
| installation altitude at height above sea level maximum | 2 000 m |
| during operation | -25 ... +60 °C |
| during storage | -40 ... +80 °C |
| relative humidity during operation | 10 ... 95 % |
| air pressure according to SN 31205 | 90 ... 106 kPa |
| installation environment regarding EMC | This product is suitable for Class A environments only. In household environments, this device can cause unwanted radio interference. The user is required to implement appropriate measures in this case. |
| EMC emitted interference | EN 60947-5-1 |
| stop category according to IEC 60204-1 | 0 |
| SIL Claim Limit (subsystem) according to EN 62061 | 1 |
| PFHD with high demand rate according to IEC 62061 | 0 1/h |
| category according to EN ISO 13849-1 | 3 |
| according to IEC 61508 | 3 |
| safety device type according to IEC 61508-2 | Type A |
| Average probability of failure on demand (PFDavg) with low demand rate acc. to IEC 61508 | 9.9E-7 1/y |
| hardware fault tolerance according to IEC 61508 | 1 |
| T1 value for proof test interval or service life according to IEC 61508 | 20 a |
| touch protection against electrical shock | finger-safe |
| design of the fuse link for short-circuit protection of the NO contacts of the relay outputs required | gL/gG: 6 A, or quick: 10 A |
| cascading input/functional switching | No |
| feedback input | Yes |
| start input | Yes |
| 1-channel or 2-channel | 1 |
| — for signaling function instantaneous contact | 1 |
| — safety-related instantaneous contact | 3 |
| — safety-related delayed switching | 0 |
| mechanical service life (operating cycles) typical | 10 000 000 |
| thermal current of the switching element with contacts maximum | 5 A |
| — delayed switching | 0 |
| — instantaneous contact | 0 |
| at 24 V | 5 A |
| at 115 V | 0.2 A5 A |
| at 230 V | 0.1 A5 A |
| wire length between sensor and electronics evaluation device with Cu 1.5 mm² and 150 nF/km maximum | 1 000 m |
| at DC maximum | 200 ms |
| at AC maximum | 200 ms |
| maximum | 300 ms200 ms |
| backslide delay time after opening of the safety circuits typical | 125 ms |
| typical | 125 ms |
| recovery time after opening of the safety circuits typical | 200 ms |
| recovery time after power failure typical | 200 ms |
| of the sensor input minimum | 200 ms |
| of the ON pushbutton input minimum | 0.15 s |
| type of voltage of the control supply voltage | AC/DC |
| at 50 Hz rated value | 24 V |
| at 60 Hz rated value | 24 V |
| 1 rated value | 50 Hz |
| 2 rated value | 60 Hz |
| control supply voltage 1 at DC rated value | 24 V |
| initial value | 0.85 |
| full-scale value | 1.2 |
| at 50 Hz | 0.85 ... 1.1 |
| at 60 Hz | 0.85 ... 1.1 |
| mounting position | any |
| fastening method | screw and snap-on mounting |
| height | 120 mm |
| width | 22.5 mm |
| depth | 120 mm |
| type of electrical connection | screw terminal |
| solid | 1x (0.5 ... 4.0mm²), 2x (0.5 ... 2.5 mm²)0.5 ... 4 mm²20 ... 14 |
| finely stranded with core end processing | 1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)0.5 ... 2.5 mm² |
| for AWG cables solid | 2x (20 ... 14) |
| for AWG cables stranded | 2x (20 ... 14) |
| stranded | 20 ... 14 |
| DC resistance of the cable maximum | 30 Ω |
| type of electrical connection plug-in socket | Yes |
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