Siemens 6ES7921-3AA00-0AA0
MPN6ES7921-3AA00-0AA0
Front connector module with flat ribbon Cable connection for digital 16 I/O modules of the S7-300, Power supply over Spring terminals
$45.72 – $85.00Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jun 2026
How we verify every order →Specifications
Identification
| Parameter | Value |
|---|---|
| Product designation | Front connector module |
| Target system | SIMATIC S7-300 |
| Suitability / intended use | Digital I/O modules |
Connection & Wiring
| Parameter | Value |
|---|---|
| Number of poles | 20; of the front connector |
| Number of poles, 1st interface | 16; the IDC connector for the connection cable |
| Electrical connection type, connecting cable | Plug-in connection |
| Conductor cross-section, stranded | 0.25 ... 1.5 mm² |
| Conductor cross-section, finely stranded (with ferrule) | 0.25 ... 1.5 mm² |
Electrical
| Parameter | Value |
|---|---|
| Rated current | 1 A |
| Rated value | 60 V |
| Overvoltage category | 2 |
Mechanical
| Parameter | Value |
|---|---|
| Mounting type | direct mounting |
| Terminal position | at the top |
| Cable length, max. | 30 m; between front connector module and terminal module |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature range | 0 ... 60 °C |
| Operating temperature range | 0 ... 60 °C |
| Storage temperature range | -40 ... +70 °C |
| Pollution degree | 2 |
Approvals
| Parameter | Value |
|---|---|
| Ex e (EEx e) protection type tested | No |
MPN
6ES7921-3AA00-0AA0