Siemens 3TK2820-2CB30
MPN3TK2820-2CB30
SIRIUS SAFETY RELAY WITH RELAY ENABLING CIRCUITS (EC), 24 V AC/DC, 22.5 MM, SPRING-TYPE TERMINALS BASIC UNIT, AUTO START, MONITORED START EC INSTANTANEOUS: 3 NO, EC DELAY: 0 NO, SC: 1 NC, MAX. ERR. CAT. EN13849-1: 4 SIL: 3, PL: E SUCCESSOR: 3SK1111-2AB30
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product brand name | SIRIUS |
| Product designation | safety relays |
| Product design / configuration | for EMERGENCY-STOP and safety doors |
| Parameter | Value |
|---|---|
| Emergency-off circuit monitoring | Yes |
| Protective door monitoring | Yes |
| Position switch monitoring | Yes |
| Safety switch | Yes |
| Magnetically operated switch monitoring | Yes |
| Start input | Yes |
| Tactile sensor monitoring | No |
| Valve monitoring | No |
| Monitored start-up | Yes |
| Feedback input | Yes |
| Parameter | Value |
|---|---|
| Safety-related instantaneous contacts | 3 |
| Safety-related delayed contacts | 0 |
| Signaling-function instantaneous contacts | 1 |
| Max. operating frequency | 2 000 1/h |
| Parameter | Value |
|---|---|
| Rated insulation voltage | 300 V |
| Rated surge voltage withstand | 4 000 V |
| Control supply voltage type (AC/DC) | AC/DC |
| Required output short-circuit protection (fuse / MCB) | gL/gG: 10 A or quick-response: 10 A or MCB type B: 2 A or MCB type C: 1.6 A or SITOP select diagnostics module (order No.: 6EP1961-2BA00) |
| Parameter | Value |
|---|---|
| Type of electrical connection | spring-loaded terminals |
| Conductor cross-section, solid | 1 x (20 ... 14) |
| Conductor cross-section, stranded | 1x (20 ... 14) |
| Conductor cross-section, with ferrule | 1x (0.5 ... 1.5 mm²) |
| Plug-in socket connection | No |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Width | 22.5 mm |
| Height | 111.2 mm |
| Depth | 118 mm |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -40 ... +80 °C |
| Relative humidity, operating | 10 ... 95 % |
| Enclosure protection rating (IP) | IP40 |
| Installation altitude, max. | 2 000 m |
| Shock resistance | 15g / 11 ms |
| EMC / emitted interference standards | IEC 60947-5-1, IEC 61000 |
| Parameter | Value |
|---|---|
| UL approval | Yes |
| Parameter | Value |
|---|---|
| At DC rated value | 24 V |
MPN
3TK2820-2CB30