Description
Product Description
The ABB TB852 (3BSC950263R1) is an RCU Link terminator accessory for ABB AC 800M and System 800xA automation systems. It terminates the dedicated Remote Control Unit (RCU) communication link to help maintain signal integrity and reduce communication errors caused by signal reflections. This compact accessory is used with compatible RCU link configurations and does not function as a CPU, power supply, or I/O module. Confirm the controller configuration and installation requirements before replacement or commissioning.

ABB TB852 3BSC950263R1
Product Parameters and Datasheet
| Parameter | Details |
|—|—|
| Brand | ABB |
| Model | TB852 |
| Part Number | 3BSC950263R1 |
| Series | AC 800M / System 800xA accessories |
| Product Name | RCU Link Terminator |
| Function | Termination of the RCU communication link |
| System Compatibility | Compatible ABB AC 800M / System 800xA configurations; verify system design |
| Connection | Dedicated RCU Link connector; verify connector details against the unit |
| Power Requirements | No separate external power supply specified for the terminator accessory; verify applicable manual |
| Dimensions | Approx. 57 × 23 × 20 mm; confirm against the product drawing |
| Weight | Approx. 0.02 kg |
| Place of Manufacture | Not confirmed; check product label |
| Country of Origin | Not confirmed; check product label |
| Product Status | Confirm actual condition: new, surplus, open-box, or used |
| Discontinued | Current lifecycle status not confirmed |
Recommended Related ABB Models
1. TB853 — RCU Control Link Terminator.
2. TK851V010 — 1.0 m connection cable used for RCU Link or BC810 interconnection.
3. TK855 — 1.0 m RCU Data Link Cable used with PM891 configurations.
4. TK856 — RCU Control Link Cable used with PM891 configurations.
5. TK857V003 — 0.3 m RCU Link Cable used with BC820.
6. BC820 — RCU-Link and CEX-Bus interconnection unit.
7. BC810 — CEX-Bus interconnection unit.
8. TB850 — CEX-Bus terminator.
9. TB851 — CEX-Bus terminator with a different connector configuration from TB850.
10. PM851 — AC 800M processor unit.
11. PM856 — AC 800M processor unit.
12. PM858 — AC 800M processor unit.
13. PM862 — AC 800M processor unit.
14. PM866 — AC 800M processor unit.
15. PM891 — AC 800M high-performance processor unit.
Compatibility Note
TB852 is specifically identified by ABB as an RCU Link terminator. Do not confuse it with TB853, which terminates the RCU Control Link, or TB850/TB851, which are CEX-Bus terminators. Confirm the controller and link configuration before ordering.


