Schneider CA3-USBCB-01 Programming Cable – Obsolete TeSys U Spare Part

Technical Dossier

Product Details And Specifications

Schneider CA3-USBCB-01 Programming Cable – Obsolete TeSys U Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Solving the Discontinued Hardware Crisis

The CA3-USBCB-01 is not a generic USB cable. It contains embedded protocol logic that enables the PC-to-controller communication required for parameter configuration, fault diagnostics, and firmware management on TeSys U motor starters. Without it, field engineers lose the ability to interrogate or reconfigure the controller — a situation that forces either blind operation or full system replacement.

TeSys U installations are common in facilities built between 2000 and 2015. Many of these systems were designed for 20-year operational lifespans. The discontinuation of the CA3-USBCB-01 does not change the mechanical and electrical integrity of the TeSys U hardware itself — it only removes the maintenance access point. Securing a spare cable restores that access and preserves the full diagnostic capability of the installed base.

How to extend your automation asset life by 5–10 years with a single spare part:

Condition & Reliability Assurance

Discontinued parts sourced outside the OEM supply chain require a structured verification process. DriveKNMS applies a 5-step QA protocol to all CA3-USBCB-01 units before dispatch:

1. Physical inspection: Connector housing, strain relief, and cable jacket examined for mechanical damage, UV degradation, and storage-related deformation.
2. Pin continuity and corrosion check: All RJ45 and USB pins tested for continuity and inspected under magnification for oxidation or corrosion that would cause intermittent communication faults.
3. Embedded circuit verification: The cable's internal protocol conversion circuitry is tested for correct signal translation between USB and the TeSys U communication interface.
4. Electrolytic capacitor aging assessment: Internal passive components are evaluated for signs of electrolytic degradation that could cause communication instability under operating temperature cycles.
5. Functional communication test: Where test equipment permits, the cable is validated against a live TeSys U controller to confirm successful device enumeration and data exchange.

Key Features for System Maintenance

Q: How do I know the unit is genuine and not a counterfeit?
A: All units are sourced through traceable industrial supply channels. Physical markings, label formatting, and connector construction are cross-referenced against known-good reference units. We do not list parts we cannot verify.

Q: Can this cable be used with Zelio Logic relays as well?
A: Yes. The CA3-USBCB-01 is compatible with the Zelio Logic SR2 and SR3 series smart relays when used with Zelio Soft 2 software, in addition to its primary TeSys U application.