The WFCO 8900-AD series integrates a 120V AC breaker compartment, a 12V DC fused distribution board and a converter/charger. If you need to identify a replacement power centre or locate a blown-fuse indicator, start by checking the full model number on the front panel next to the breakers.
Identify the main sections
WFCO's illustrated manual places the AC breaker compartment toward the left, the DC fuse distribution to the right, and the converter's main board assembly (MBA) in the lower section. The blocks below are a location guide, not a wiring schematic.
Open factory power-centre wiring diagram (PDF, printed page 11).
Which 8900-AD model do you have?
All four models listed below use the 8900-AD architecture, but their converter output and reverse-polarity fuses differ. The output column states WFCO's lead-acid and lithium ratings separately.
| Model | Rated output family | Reverse-polarity protection | Lead-acid / lithium output |
|---|---|---|---|
| WF-8935-AD | 35 A | One 40 A fuse | 35 A / 32.5 A |
| WF-8945-AD | 45 A | Two 30 A fuses | 45 A / 41.5 A |
| WF-8955-AD | 55 A | Two 40 A fuses | 55 A / 50 A |
| WF-8965-AD | 65 A | Four 20 A fuses | 65 A / 60 A |
WFCO provides 11 DC load positions: nine general-purpose circuits rated up to 20A and two designated higher-current circuits, F10 and F11, rated up to 30A. An LED beside each fuse indicates an open fuse when its circuit has a connected load. Fuse size must match the circuit's actual protection requirement.
Battery-side components and service references
The manufacturer identifies a battery-positive connection (POS+), converter output connection (VCC+), negative return (NEG-), reverse-battery protection fuses and the eleven fused branch outputs. Position labels and available terminal arrangements are shown in the official fuse-board drawing; do not assume the connector position is identical on unrelated WFCO families.
The factory documentation also identifies a replaceable main board assembly for service. A WF-8900-AD-REP converter replacement kit is a separate part family and should only be selected by matching the full model and replacement kit number. The complete power centres below are not those replacement kits.
Shop by exact WFCO model number
These product photographs and links come from our catalog. Select the same full model number as the label on your installed power centre.
WFCO manufacturer drawings
The official 8900-AD manual includes the cabinet wiring illustration, detailed DC fuse-board illustration, protective devices and specifications.
Full power-centre wiring view — PDF page 13 · DC fuse-board component drawing — PDF page 14 · Manufacturer specifications — PDF page 15