Parallax Power Supply ATS503 50 Amp Generator Switch

Catalog Item # 86726

Designed to withstand the rigors of operating in Class A motor homes, this 50 amp line generator automatic transfer switch offers robust construction.

It’s built to last and to outperform the competition.


  • Heavy duty high performance relays
  • 12V DC relays provide quiet chatter free operation
  • Capable of switching 60 amps
  • 100 amp neutral carrying capacity
  • Self-checking system with LED indicators for system status and faults
  • Designed as a replacement for the Magnatek ATS100, Parallax ATS5070 and Parallax ATS501 transfer switch

  • Technical Specifications

    10 lbs.
    4" H x 12" W x 10" D

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