Description
PACIFIC 33VM52-000-4 – Legacy Rack Plug‑in Module for PACIFIC Control Racks
The PACIFIC 33VM52-000-4 appears to be a legacy plug‑in module built for PACIFIC control subracks. From my experience, parts in the 33VM series are typically used as like‑for‑like replacements in existing cabinets—ideal when you want the rack running again without touching wiring looms or rewriting logic. You might notice the classic Eurocard front plate and retaining screws; swaps during short maintenance windows tend to be predictable and quick.

Company’s Order Placement Process and Guarantees
- The warranty period is 365 days
- Delivery time: 1 week for in-stock; no more than one month at the latest
- Payment method: 50% advance payment, full payment for delivery
- Express delivery methods: FedEx, UPS, DHL
- Each unit receives a functional/visual check and ESD-safe, shock‑protected packing before dispatch
Key Features
- Rack plug‑in Eurocard design – Slides into PACIFIC legacy subracks with front panel screws for fast changeover.
- Backplane‑powered – Draws logic supply over the system backplane; no separate power wiring in most cases.
- Continuous‑duty build – Intended for 24/7 industrial operation where uptime matters.
- Front access – Clear labeling and accessible connector areas typically speed commissioning and diagnostics.
- Drop‑in replacement – In many cases installs like‑for‑like, minimizing validation and documentation updates.
Technical Specifications
| Brand / Model | PACIFIC 33VM52-000-4 |
| Product Type | Legacy process/drive control module (rack plug‑in) |
| HS Code | 8538.90 – Parts for electrical control equipment (final classification may vary by country) |
| Power Requirements | Supplied via system backplane; no separate external supply on the front panel |
| Dimensions & Weight | Eurocard 6U; depth ~220 mm; weight typically 0.4–0.8 kg |
| Operating Temperature | Typically 0…+55 °C (cabinet‑installed; non‑condensing) |
| Signal Input/Output Types | System bus over backplane; front service/field connector depending on variant |
| Communication Interfaces | Backplane interface to the rack; front status LEDs where fitted |
| Installation Method | Plug‑in to PACIFIC subrack; secure with front panel retaining screws |
Application Fields
This module family shows up most often in established control racks where stability and fast swaps matter more than feature upgrades:
- Metals and rolling lines – maintaining rack communications and control continuity.
- Power & utilities – outage work where a direct replacement helps hit restart targets.
- Chemicals, refining, pulp & paper – validated systems needing like‑for‑like spares.
- OEM retrofits – preserving existing wiring looms and cabinet layouts.
A maintenance lead put it simply last quarter: “We seated the 33VM52, tightened the front screws, and the rack came back clean—no wiring changes.” That’s been a fairly typical experience when slotting into the correct position with the same revision.
Advantages & Value
- Reliability – Built for continuous duty; in many cases runs for years with minimal attention.
- Compatibility – Mechanics and backplane interface match the original subrack to minimize engineering changes.
- Cost savings – Extends the life of installed assets and defers expensive platform migrations.
- Support – We can help confirm interchange codes and slot compatibility before shipment.
- Practical logistics – Clear lead times and tested parts that fit planned shutdowns.
Installation & Maintenance
- Cabinet environment: Clean, ventilated subrack; keep ambient typically 0…55 °C; non‑condensing.
- Module swap: De‑energize when possible; align rails, press to engage backplane fully, and fasten the front screws evenly.
- ESD handling: Use a grounded wrist strap; handle by edges; store in ESD‑safe packaging.
- Wiring & EMC: Separate any front‑panel service/field leads from high‑noise conductors; maintain shielding continuity.
- Routine care: Periodic dust removal, connector re‑torque, and a quick check of status LEDs/diagnostics during planned stops.
- Spares strategy: Keeping one tested spare per critical rack is, in most cases, the cheapest insurance against downtime.
Quality & Certifications
- Manufactured to industrial quality standards, typically aligned with ISO 9001 practices.
- CE/UL applicability depends on production variant and year; we can verify by part/serial.
- RoHS status may vary by build; confirmation available on request.
- Warranty: 365 days repair/replace coverage from delivery.
Related / Supporting Components
- PACIFIC legacy 19″ subrack and matching backplane slot mechanics.
- Front connector/terminal set and coding keys for the designated slot.
- Shielded service/field cable assemblies where the front interface is utilized.







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