50 amp automatic transfer switch for 120/240V RV shore power and generator power systems. Provides generator-dominant automatic transfer with reverse polarity and open ground protection, LED fault indication, mechanical interlocking contactors, and power-up time delay.
The Southwire 40141-001 is a 50 amp automatic transfer switch designed for RVs with both shore power and onboard generator power. It automatically transfers the RV’s AC power source between shore power and generator power, helping remove the need to manually move power cords between sources.
This model is generator dominant. When both shore and generator power are available, generator power takes priority after the generator has energized and the 30-second delay completes. When generator power shuts down, shore power returns after a short 3-4 second delay.
Automatically switches between RV shore power and generator power
Designed for 50 amp RV electrical systems using 120/240V service
Provides reverse polarity and open ground protection while on shore power
Includes LED indication for reverse polarity and open ground protection
The Southwire 40141-001 is commonly used in motorhomes, fifth wheels, and other RVs with a 50 amp shore power connection and onboard generator. It is intended for hardwired installation between the RV’s shore power input, generator output, and main electrical distribution panel. This model is a transfer switch, not a transformer or amperage converter. It does not convert 30 amp service to 50 amp service and does not provide surge suppression.
• One Southwire 40141-001 50 amp automatic transfer switch • Installation documentation as supplied by manufacturer
This transfer switch is hardwired between the RV’s shore power input, generator output, and main AC distribution panel. Verify 50 amp service rating, 120/240V wiring, conductor size, neutral/ground routing, generator compatibility, enclosure space, and strain relief requirements before installation. This model does not include surge protection. If surge, low/high voltage, open neutral, miswired pedestal, or full EMS-style protection is needed, use a separate surge/EMS device or choose a Southwire transfer switch model that specifically includes those protections.
Transfer switch installation involves 120/240V AC power, shore power, generator power, high-current wiring, neutral/ground routing, and RV electrical code requirements. Installation should be performed by a qualified RV technician or electrician familiar with 50 amp RV electrical systems. Disconnect shore power, generator power, inverter power, and battery power before servicing.
The Southwire 40141-001 is a 50 amp, 120/240V automatic RV transfer switch with reverse polarity and open ground protection. It is not a transformer adapter and does not provide surge protection. Verify service rating, generator compatibility, protection needs, mounting space, and wiring before ordering.