Eaton Magnum PXR / Power Defense SB Catalog Number Decoder
Decode 25-character Magnum PXR and 15-character Power Defense SB catalog numbers. Identifies frame size, ampere rating, trip unit, and accessories. The decoder is free, needs no login, and runs entirely in your browser — paste a catalog number such as MPS8203CEA202AATAAWKPALAX and it returns every field it can resolve, plus a position-by-position map showing which character carried which value.
- Manufacturer
- Eaton
- Frames
- Magnum DS (PXR) · Power Defense SB
- Ratings
- 800A – 6,000A
What this decoder identifies
- Magnum PXR (25-character) or Power Defense SB (15-character) format
- Frame size and frame ampere rating
- PXR trip unit configuration
- Interrupting rating
- Mounting and pole count
- Factory-installed accessories
Also sold or stamped as
The same breaker family appears under several names depending on the era of the nameplate. This decoder covers numbers labelled:
- Eaton PXR trip unit
- Magnum PXR
- Power Defense
- PD-SB
- Series NRX
Eaton Magnum PXR / Power Defense SB — common questions
Can one decoder read both PXR and Power Defense SB numbers?
Yes. The two use different lengths — 25 characters for Magnum PXR and 15 for Power Defense SB — so the decoder detects the format from what you paste and switches automatically.
Is the PXR a retrofit for an older Magnum trip unit?
The PXR is the current-generation Eaton trip unit family. Whether it can be fitted to a given breaker depends on the frame and the existing trip unit. Send the catalog number or a nameplate photo to Voyten Electric at 1-800-458-4001 and our team will identify it.
Related resources
Free manuals for this equipment
Eaton Power Defense and Magnum manuals
All breaker decoders
Siemens, Eaton / Cutler-Hammer, GE and Square D catalog-number tools
Working in a switchgear room with no signal? Every decoder also runs offline from a local folder.
Open the Offline KitCan't read the nameplate?
If the plate is painted over, corroded or missing digits, send us what you can read or a photo — our team identifies legacy and obsolete breakers every day, and sources the new-surplus or reconditioned replacement.