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Master Battery Selector Switch, Blue Sea

Part #: Z4340

Price: $45.95

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Specifications and features
  • Switch two batteries from Off - 1 - Both - 2
  • Make-before-break contact design allows switching between battery banks without power interruption
  • Surface or rear panel mounting
  • Maximum voltage: 32V DC
  • Continuous rating: 350 Amps
  • Intermittent rating (5 minutes): 600 Amps
  • Cranking rating (30 seconds): 1200 Amps
  • Ignition protected so you can switch off the power without causing a fire or explosion in case there is spilled fuel aboard
  • Alternate field disconnect: no (protects alternator diodes in the event that switch is passed through the OFF position when the engine is running.) Do not switch to OFF position while the engine is running.

  • Diameter of hole for rear panel mounting: 3-3/4"
  • Mounting hole centers on a 4-1/4" diameter circle (3" square), for (4) 1/4" (M6) screws
  • Overall width and height: 3-7/8" x 3-7/8"
  • Terminal stud size: 3/8" - 16 (M10)

    It is a good choice for small boats and large. On Catalina 22's and 25's it provides for the installation of two batteries which can be used independently.