How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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The Siemens 6ES7963-3AA10-0AA0 is the IF963-X27 interface module for the SIMATIC S7-400 CP441, adding an RS422/RS485 physical layer for point-to-point coupling. It reaches up to 1200 m of cable at 19,200 bps while still supporting a maximum transmission rate of 115.2 kbit/s, drawing 41 mA at 0.14 W typical power loss.
Pick IF963-X27 when the link needs both long reach (up to 1200 m) and the full 115.2 kbit/s rate, since the balanced RS422/RS485 signal keeps noise immunity at distance without the speed penalty that IF963-TTY takes. IF963-RS232 stays the simpler option only when the run is short (under 15 m).
| Part number | 6ES7963-3AA10-0AA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4019169239264 |
| Communication | RS422/RS485, point-to-point, up to 115.2 kbit/s, 1200 m max |
|---|
| Shipping weight | 0.557 kg |
|---|
| HS code | 85176200 |
|---|---|
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
| Series | SIMATIC S7-400 |
|---|---|
| Product Type Designation | Interface module IF963-X27 |
| Used With | CP441 (AB / CP 441-AA05) |
| Interface Type | RS422/RS485, point-to-point (PTP) coupling |
| Cable Length, max. | 1200 m at 19,200 bps |
| Current Consumption, max. | 41 mA |
| Power Loss, typ. | 0.14 W |
| Dimensions (W x H x D) | 19 mm x 67 mm x 87 mm |
| Weight | 80 g |
| Country of Origin | DE |
From the manufacturer description; the values above take precedence.
No documents are on file for this part yet.
Ask us for the datasheetThe tariff (HS) code on file for 6ES7963-3AA10-0AA0 is 85176200.
The EAN (GTIN) of 6ES7963-3AA10-0AA0 is 4019169239264.
6ES7963-3AA10-0AA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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