[ AUTOMATIC TRANSFER SWITCH // IDENTIFIED MODEL ]
Rack Automatic Transfer Switch AP4423A
120 V, 20 A class, dual-source rack transfer equipment. Eight NEMA 5-20R outputs; input plugs/cords are SKU-specific. This record describes the named regional model only. Variants and accessories must be matched against the complete product label and manufacturer documentation.
ARCHIVAL IDENTIFICATION: Preserve the complete SKU, region, serial/date code, hardware/firmware revision, installed options and observed condition. Similar names do not establish electrical equivalence.
Exact model specifications
| Catalog category / topology | Automatic transfer switches — Automatic transfer switch. |
|---|---|
| Electrical ratings | 120 V, 20 A class, dual-source rack transfer equipment. |
| Receptacles / connectors | Eight NEMA 5-20R outputs; input plugs/cords are SKU-specific. |
| Battery / replacement / hot-swap | Not applicable: this model has no battery or stored-energy backup. Network status/monitoring on managed model; no battery/runtime. Both inputs must be compatible sources; transfer interruption requires downstream PSU hold-up. |
| Runtime / operating conditions | No stored runtime. The product supplies only its stated surge suppression, metering, regulation, distribution or source-transfer function; continuity depends on upstream AC and connected equipment. |
| Network / monitoring interface | Local or network source/status indications according to the model note; source transfer is not energy storage. |
| Electrical compatibility | Network status/monitoring on managed model; no battery/runtime. Both inputs must be compatible sources; transfer interruption requires downstream PSU hold-up. |
| Warnings / revision controls | Network status/monitoring on managed model; no battery/runtime. Both inputs must be compatible sources; transfer interruption requires downstream PSU hold-up. Verify complete suffix, electrical ratings, connectors, firmware/manual revision and regional certification against the actual nameplate before connecting equipment. |
Service and archival notes
- Photograph the nameplate, inlet/outlet map, serial/date code, status indicators and accessories; record load, input, environment and test date separately from manufacturer ratings.
- Do not confuse distribution/regulation/surge suppression/metering or transfer with battery backup; this model has no stored runtime.
- Never open energized mains equipment. Do not energize cracked enclosures, damaged cords, overheated connectors, compromised grounding or swollen/leaking batteries.
- Network status/monitoring on managed model; no battery/runtime. Both inputs must be compatible sources; transfer interruption requires downstream PSU hold-up.
Manufacturer sources and manual
- APC manufacturer product search — Rack Automatic Transfer Switch AP4423AFind the manufacturer’s specification sheet for the exact named model and regional SKU.
- APC manuals / support libraryUse the user guide, service and safety instructions matching the label and revision. This static archive does not replace manufacturer documentation.