ABB UNS0122A-P (3BHE042393R0101) – Plug-in Control Module for UNITROL/PEC-based Excitation and Converter Systems

• - Warranty: 365 days from delivery




•    - Lead time: typically 1 week if in stock; no more than 1 month at the latest




•    - Payment: 50% advance payment; full payment prior to delivery




•    - Express options: FedEx, UPS, DHL




•    - Pre-ship testing and visual inspection included; traceable packing list and photos available on request

• Genuine ABB spare – Designed for ABB excitation/PEC control racks, ensuring mechanical and electrical fit without cabinet rework.

• Backplane‑integrated – Interfaces via the system backplane, so there’s typically no field terminal rewiring during swaps.

• Stable operation in utility environments – Built for continuous duty in power generation and converter cabinets.

• Service-friendly design – Front-panel access for module replacement and labeling; reduces downtime during planned outages.

• Lifecycle continuity – In many cases compatible with existing firmware/hardware revisions, helping keep legacy lines running.

Plants usually deploy the UNS0122A-P in:

• UNITROL-based excitation systems in hydro, gas, or steam power generation.

• PEC/drive and converter cabinets in metals, pulp & paper, and process industries.

• Lifecycle service projects where a drop-in ABB spare keeps legacy systems online.

One thing I appreciate is how it helps maintenance teams standardize spares across multiple units. A customer in a hydro station told us a swap took under 30 minutes during a planned outage, with no field wiring changes—just alignment of firmware notes and a quick health check in the HMI.

• Reliability – ABB rack modules are built for continuous-duty applications and typically handle cabinet conditions well.

• Compatibility – Form-fit-function replacement reduces engineering changes and keeps system qualification straightforward.

• Cost savings – Shorter outage windows and minimal rewiring translate into real maintenance savings.

• Supportability – We help match revisions, confirm rack compatibility, and document the swap procedure.

• Cabinet environment – Install in a clean, ventilated 19″ control cabinet; avoid dust ingress and vibration hotspots.

• Power and grounding – Verify rack 24 VDC supply quality and cabinet grounding; stable backplane power reduces nuisance trips.

• Wiring – No field terminals on the module; ensure the backplane connectors are clean and fully seated.

• Safety – De-energize the rack (unless the system procedure allows controlled hot-swap), follow ESD protection, and label the removed unit.

• Routine care – Periodic visual inspection, dust removal with dry air, and firmware/config backups. Keep spare boards in antistatic bags in a dry store.

• CE compliant for industrial control use (typical for ABB rack modules).

• RoHS conformity in most markets.

• Manufactured under ISO 9001 quality systems.

• Warranty: 365 days; replacement or repair per test outcome.

We typically support adjacent ABB modules used in the same racks (e.g., companion UNS-series boards and UNITROL rack power/communication units). If you share your current rack BOM or a cabinet photo, we can verify cross-compatibility and suggest on‑hand spares to reduce lead time exposure.