Reliance Electric PM3328B-6-1-3-E 80026-524-01 Power Supply Module – Obsolete AutoMax Spare Part

Technical Dossier

Product Details And Specifications

Reliance Electric PM3328B-6-1-3-E 80026-524-01 Power Supply Module – Obsolete AutoMax Spare Part

When a power supply module fails inside a Reliance Electric AutoMax control system, the consequences extend far beyond a single line stoppage. AutoMax-based architectures — deployed widely across metals, paper, and heavy process industries through the 1980s and 1990s — are no longer supported by the OEM. Rockwell Automation absorbed Reliance Electric in 1995, and the AutoMax PLC platform was formally discontinued. Replacement parts such as the PM3328B-6-1-3-E are no longer manufactured.

A single unplanned outage on an AutoMax-controlled line can cost a facility USD $50,000–$500,000 per day in lost production, depending on throughput. A forced migration to a modern DCS or PLC platform — including engineering, rewiring, software development, and operator retraining — routinely exceeds USD $1,000,000 per control node. Against that backdrop, securing a verified spare power supply module at a fraction of that cost is not a procurement decision; it is an asset protection decision.

DriveKNMS maintains a carefully sourced inventory of hard-to-find Reliance Electric AutoMax components. The PM3328B-6-1-3-E (catalog reference 80026-524-01) currently has limited stock available.

Technical Specifications

Note: Electrical parameters (input voltage range, output rails, current ratings) for this specific revision are not published in open documentation. DriveKNMS does not fabricate specifications. Buyers requiring confirmed electrical data should contact us directly — our technical team will cross-reference against original Reliance Electric engineering documentation where available.

Solving the Discontinued Hardware Crisis

The Reliance Electric AutoMax platform was a workhorse in continuous-process and heavy manufacturing environments. Its distributed architecture, deterministic scan times, and robust I/O handling made it a preferred choice for applications where reliability over decades mattered more than cutting-edge features. That same longevity is now its liability: the installed base is aging, OEM support is gone, and every remaining AutoMax system is operating on borrowed time — unless the right spare parts are in place.

The PM3328B-6-1-3-E power supply module sits at the heart of the AutoMax rack. Without a functioning power supply, the entire control node goes dark. There is no modern drop-in equivalent from Rockwell or any other vendor. The only viable path to keeping an AutoMax system operational — without a full platform migration — is sourcing original-specification modules from the secondary market.

Facilities that have extended AutoMax system life by 5–10 years consistently follow the same strategy: they identify the three to five highest-failure-risk modules in their control architecture, secure at least one verified spare for each, and store those spares under controlled conditions. The power supply is invariably on that list. A single spare PM3328B-6-1-3-E, properly stored, can defer a seven-figure capital project by years. That is not a theoretical benefit — it is a documented maintenance outcome across the metals, pulp and paper, and chemical processing sectors.

For plant managers facing pressure to justify continued operation of legacy systems, the calculus is straightforward: the cost of a verified spare part is measured in thousands. The cost of an unplanned migration is measured in millions. The decision to stock critical spares is the lowest-cost risk mitigation available.

Condition & Reliability Assurance

DriveKNMS applies a structured 5-step QA process to all refurbished AutoMax power supply modules before they are offered for sale:

• Step 1 – Visual and Mechanical Inspection: Full board-level inspection for physical damage, burn marks, cracked solder joints, and connector pin integrity. Corroded or oxidized pins are cleaned and assessed for serviceability.
• Step 2 – Electrolytic Capacitor Assessment: Electrolytic capacitors are the primary failure point in power supply modules of this era. Each capacitor is tested for capacitance, ESR (equivalent series resistance), and leakage. Capacitors showing degradation are replaced with equivalent-specification components.
• Step 3 – Firmware and Configuration Verification: Where applicable, firmware revision is confirmed against known AutoMax compatibility matrices. Modules with unknown or mismatched firmware versions are flagged and disclosed to the buyer prior to sale.
• Step 4 – Functional Power-On Test: The module is bench-tested under load conditions representative of normal AutoMax rack operation. Output stability and protection circuit response are verified.
• Step 5 – Final Documentation and Packaging: Each unit is documented with its condition grade, test results, and any component-level work performed. Modules are packaged in anti-static materials with desiccant for long-term storage integrity.

New Old Stock (NOS) units undergo Steps 1, 2, and 3 as a minimum, with full functional testing applied where the unit has been in storage for more than five years.

Key Features for System Maintenance

• Drop-in replacement: The PM3328B-6-1-3-E installs directly into the existing AutoMax rack slot. No rack modification, no rewiring, no PLC software changes required.
• No reprogramming required: AutoMax application logic, I/O mapping, and network configuration are unaffected by a power supply swap. Maintenance technicians familiar with the platform can complete the replacement without specialist engineering support.
• Avoids engineering reconstruction costs: Substituting a non-original power supply or forcing a rack redesign introduces compatibility risk and requires engineering validation. Using the correct OEM part number eliminates that risk entirely.
• Long-term storage compatibility: Units supplied by DriveKNMS are packaged for extended shelf life, making them suitable for strategic spare parts inventory programs.

FAQ

What warranty applies to an obsolete part like this?
DriveKNMS provides a 90-day warranty against defects in workmanship and materials on all refurbished units. New Old Stock units are sold with a 30-day functional guarantee. Warranty terms are confirmed in writing at the time of order.

How do I know the unit is genuine and not a counterfeit?
All units sourced by DriveKNMS are traceable to documented supply chain origins. Board markings, date codes, and component profiles are cross-referenced against known-authentic references. Any unit where authenticity cannot be confirmed to our standard is not offered for sale.

Should I buy more than one unit?
For any AutoMax installation with no current spare, purchasing a minimum of one unit is a baseline requirement. Facilities with multiple AutoMax nodes, or with production lines where downtime cost exceeds USD $100,000 per day, should consider holding two units. Given the declining availability of this part number on the secondary market, procurement decisions should not be deferred.

Can you source other AutoMax modules?
Yes. DriveKNMS specializes in the full Reliance Electric AutoMax component range. Contact us with your complete bill of materials for a consolidated sourcing assessment.