Trying to identify a breaker in a Progressive Dynamics power centre? The PD4000 is a 30A AC main family, while the PD4500 accommodates two-leg 50A AC distribution. This page compares the factory-approved breaker type designations, the 12V fuse function and the converter AC branch rating before you select an individual replacement.
Identify the main, branch and DC fuse circuits
Identify the panel's model and the electrical system before selecting components. An AC breaker operates on the shore-power side; an ATC/ATO blade fuse protects its separate 12V DC circuit.
120V AC breaker section
12V DC fuse section
The family name on the breaker matters
| Manufacturer | Listed breaker type family | Selection guidance |
|---|---|---|
| ITE / Siemens | QP, QT | Manufacturer lists both families for main and branch use; check positions and full model |
| Thomas & Betts | TB, TBBD | Listed breaker types for the referenced PD4000 and PD4500 manuals |
| Square D | HOM, HOMT | Homeline family; verify individual approved panel and circuit arrangement |
| Cutler-Hammer / Bryant | BR, BRD | Approved type families in the referenced manufacturer manuals |
| GE | HACR | Use only if the installed panel's approval label includes this family |
| Progressive Dynamics family | AC main service | Converter circuit breaker | What differs |
|---|---|---|---|
| PD4000 / PD4045KV / PD4060KV | 30A / 120V main | 15A converter AC branch | Integrated 12V charger and fuse board |
| PD4500 / PD4560AV | 50A / 120–240V main | 15A converter AC branch | Converter itself uses 105–130V AC |
| PD4500 / PD4575 / PD4590 | 50A / 120–240V main | 20A converter AC branch | Higher-rated converter section; check exact model |
The manufacturer-approved breaker lists include QP/QT, TB/TBBD, HOM/HOMT, BR/BRD and GE HACR designs for the referenced power-centre revisions. This is a list of approved families, not blanket authorization to install any tandem breaker or change the RV's electrical rating. Check each breaker position and type on the actual panel label.
Progressive Dynamics lists the PD4000 converter's AC hot connection on a 15A branch breaker, while the PD4500 manual specifies 15A for PD4560 and 20A for PD4575/PD4590. The PD4500 AC distribution may handle two 50A hot legs, but its converter section is fed by 120V AC—not 240V directly.
Compare the original part number with product photos
Compare the breaker and power-centre markings to the separate products below before ordering. The illustrated listings are not universal replacement approvals.
Power centre model identification
Siemens QP family product references
These 15A, 20A and 30A single-pole QP examples are not interchangeable. A 30A main breaker does not mean a 30A branch circuit is allowed; actual permitted ratings are in the model table above.
ATO / ATC 12V blade-fuse assortment
Original manufacturer breaker and fuse drawings
The Progressive Dynamics manuals contain the AC main and branch breaker family list plus model-specific component diagrams. Check the original wiring legend and enclosure label for your exact power-centre revision.
Progressive Dynamics PD4000 original breaker and fuse manual (PDF) · Progressive Dynamics PD4500 breaker and converter manual (PDF)