Built-in Southwire surge guard EMS provides comprehensive protection including surge, voltage monitoring, and fault detection. External unit unnecessary if built-in is full EMS. Verify yours has EMS features not just surge protection.
For 50-amp RVs, invest in a quality surge protector like Progressive Industries EMS-HW50C (hardwired) or EMS-PT50X (portable). Hardwired units prevent theft and provide superior protection, while portable units offer flexibility but require security measures.
Weatherproof covers for surge protectors available from TRC, Camco, and general electrical supply. Use in-use style covers that allow cord exit while protecting from rain and sun.
Your Class A RV tripping the GFCI every couple days, especially on hot days, is likely caused by your solar inverter developing ground faults as it heats up, though a failing battery could also contribute to the issue.
A burnt RV breaker is typically caused by loose connections, overloading, or age-related deterioration. Replace the damaged breaker and inspect the entire panel for safety, as loose connections are the most common culprit in low-load situations.
Auto-reset EMS in 180-250 dollar range is worth it for 30 amp RV. Protects against surges, low and high voltage, and wiring faults. Progressive Industries EMS-PT30X and Surge Guard 44280 are top recommendations.