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Balboa Expander Board 55138

Balboa Exp. Board 2-speed Pump Relay (older GS and BP boards with black transformer)

Key Features:

  • Balboa part number : 55138
  • Dimensions: 115 mm (L) x  47 mm (H) 
  • Type: Expander PCB for older GS and BP boards with black transformer
  • Power: Operates at 230V, 50Hz.
  • Specifications: Supports one 2-speed pump protected by a 30 AMP fuse.

Important Notes:

This replacement PCB must only be used for its intended system. Installation should be performed by a qualified professional to avoid damage or warranty invalidation.


  • Brand
  • Model / Series
  • Product Type
Brand: Balboa
Model / Series: GS
Product Type: Expander Board

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