Looking at an RV automatic transfer switch and trying to determine which model you have? Compare the label with the Southwire model numbers below. The 30-amp basic unit, 50-amp limited-protection switch and 50-amp full-protection RVC unit are different products, even when they serve the same general role.
How shore power and generator power connect
An automatic transfer switch selects the available input and directs it to the RV's electrical distribution system. This conceptual flow is useful for identifying the role of each connection, but it does not indicate terminal placement or conductor wiring.
For the Southwire RVC 40350RVC3, generator power is selected after its 30-second delay when available; after generator shutdown it returns to shore power after a three-second delay, subject to valid incoming power.
30-amp and 50-amp model comparison
These models differ in electrical capacity and protective features; do not choose a switch from appearance alone. A 50A unit is not an assumed drop-in replacement for a 30A installation.
| Exact model | Electrical service | Protection class | Key distinction |
|---|---|---|---|
| 41300-001 | 30A, 120V AC | Basic automatic transfer switch; no factory claim of built-in surge protection | Exact cataloged 41300-001 model |
| 41261-011 | 50A, 120/240V AC | Limited protection ATS, 2,600 joules surge suppression | Southwire limited-protection family |
| 40350RVC3 | 50A, 120/240V AC | Full protection ATS, 3,350 joules; RV-C communications | Southwire full-protection family |
The manufacturer lists 2,600J surge suppression for the 41261-011 limited-protection model and 3,350J for the 40350RVC3 full-protection model. The 40350RVC3 also provides RV-C communications and safeguards against specified shore-power faults. These features should not be attributed to a basic transfer switch.
Product photos and exact model numbers
Each photograph opens the matching model in UsedRVParts. Compare the label, voltage, amp rating and installation configuration before purchasing.
Southwire manufacturer references
Review Southwire's technical catalog for model-specific ratings and switch types, and the manufacturer product page for the 40350RVC3. The catalog illustrations show each product and its protection category; full installation instructions must be obtained for the exact unit before wiring.
Southwire circuit protection and transfer-switch catalog (PDF) · Southwire 40350RVC3 manufacturer product page