Pioneer Magnetics PM3328B-6-1-3-E 56VDC Power Supply

Product Introduction & Engineering Value

This is a power-conversion component, not a generic replacement PSU. The PM3328B-6-1-3-E is configured around the power requirements of a specific medium-voltage drive platform, so output voltage, current capacity, mechanical configuration, and the exact assembly number all matter during replacement.

For plants maintaining PowerFlex 7000 equipment, keeping an exact spare can shorten recovery from a drive power-supply failure. Pioneer Magnetics also maintains dedicated repair and refurbishment programs for its power supplies, including older designs, which is useful when replacement inventory becomes difficult to source.

Technical Specifications

The strongest available specification source identifies the unit as 1,500 W, single-phase, 100–240 VAC, 50/60 Hz, 23 A input, and 56 VDC at 26.8 A output.

Procurement note: Some reseller listings contain conflicting specifications for this model. For example, one listing incorrectly describes it as a 12 VDC control module. That conflicts with multiple independent listings identifying the PM3328B-6-1-3-E as the 56 VDC / 26.8 A power supply associated with 80026-524-01. The latter specification is the safer basis for procurement.

Field Application & the “Trench” Experience

Consider a plant running a PowerFlex 7000 drive on a large motor application. The drive itself remains healthy, but its auxiliary power supply fails during production. The resulting drive fault takes the motor offline, and troubleshooting initially points toward the control electronics.

A maintenance technician identifies the failed unit as PM3328B-6-1-3-E / 80026-524-01. Rather than substituting a generic 56 V supply, the team verifies the original assembly number, connectors, mounting arrangement, input configuration, and load requirements. A tested replacement is installed during the maintenance window, followed by DC-output verification and drive startup testing.

That is the practical role of this part: maintaining an established PowerFlex 7000 power architecture without redesigning the drive system.

Specific application scenarios

• PowerFlex 7000 medium-voltage motor drives
• Large industrial motor control cabinets
• Mining and mineral-processing drive systems
• Heavy-duty process equipment
• High-power fan, pump, compressor, and conveyor drives

PM3328B-6-1-3-E

PM3328B-6-1-3-E

Transparency SOP: QA & Testing

For a New Surplus or Refurbished PM3328B-6-1-3-E, a simple resistance check is not adequate.

1. Identification

• Confirm PM3328B-6-1-3-E marking.
• Cross-check 80026-524-01.
• Verify assembly number where available: 128131-RH5.
• Photograph all labels before installation.

2. Physical inspection

Check:

• AC input terminals
• DC output terminals
• Cooling components
• PCB condition
• Capacitors and power semiconductors
• Connector condition
• Evidence of overheating

3. Electrical testing

The unit should be tested at its intended input range and under an appropriate load. Verify:

• AC input operation
• 56 VDC output
• Output regulation
• Current delivery
• Startup behavior
• Protection/fault response

Pioneer Magnetics states that it provides repair and full-refurbishment services for its power supplies and recommends refurbishment as part of preventative maintenance for aging systems.

The Veteran’s Tech Trap Guide

⚠️ Trap 1: Ordering by “56 VDC” alone

A 56 VDC industrial supply is not automatically a replacement.

The PM3328B-6-1-3-E is tied to a particular drive application and physical configuration. Match PM3328B-6-1-3-E / 80026-524-01, not just the electrical output.

PRO TIP: Include a photograph of the original nameplate with every RFQ.

⚠️ Trap 2: Confusing 80026-524-01 with another Pioneer Magnetics part

The Rockwell-related number 80026-524-01 is explicitly cross-referenced to PM3328B-6-1-3-E by multiple industrial parts sources.

Do not accept a quote simply because the seller says “PowerFlex 7000 power supply.” Request the exact cross-reference.

⚠️ Trap 3: Ignoring input current and installation requirements

The documented input rating reaches 23 A. This is a substantial AC input load. Verify cabinet wiring, protective devices, disconnect arrangements, and installation requirements before commissioning.

⚠️ Trap 4: Treating “new surplus” as factory-supported

The unit is listed as discontinued. A surplus unit may be unused but still have significant shelf age. For electrolytic-capacitor-equipped power electronics, storage history matters.

Ask for manufacturing date information where available and request a functional load test.

Dynamic FAQ

Q1. What is the Pioneer Magnetics PM3328B-6-1-3-E?

It is an industrial AC/DC power supply used with Rockwell PowerFlex 7000 medium-voltage AC drive systems. Its documented output is 56 VDC at 26.8 A, with 1,500 W rated output power.

Q2. What is the Rockwell part number for PM3328B-6-1-3-E?

The commonly cross-referenced Rockwell/customer part number is 80026-524-01.

Q3. What is the output of the PM3328B-6-1-3-E?

The documented output is 56 VDC at 26.8 A, equivalent to approximately 1,500 W.

Q4. Is PM3328B-6-1-3-E still manufactured?

Available industrial parts listings identify it as discontinued. Pioneer Magnetics, however, continues to offer repair and refurbishment services for older power-supply designs.

Q5. What should I verify before purchasing a replacement?

Verify the model, 80026-524-01 cross-reference, assembly number, input voltage, output rating, physical connectors, and the exact PowerFlex 7000 drive configuration.

Q6. Are New Surplus and refurbished PM3328B-6-1-3-E units available?

Yes. Current industrial suppliers list new/surplus and refurbished or repair options for this part. One supplier currently lists a New Surplus unit under PM3328B-6-1-3-E / 80026-524-01, while repair specialists report completed repairs on the same model.

For a critical drive spare, request serial/assembly identification, test results, condition classification, and written warranty terms before purchase.