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Home  >  Battery Management  >  Battery Disconnects  > HD Series Heavy Duty On-Off

HD Series Heavy Duty On-Off Battery Switch w/ AFD 32V 600A

Item #: 78411B
Manufacturer Item: 3001B
Manufacturer: Blue Sea Systems
Min. Order Qty: 1
Available: 28
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Alternator Field Disconnect (AFD) is a feature of some battery switches. AFD protects the diodes in the alternator if the battery switch is switched to the OFF position while the engine is running.

Not packaged for retail use. For retail product, see item 78411
  • Blue Sea Systems 3001B HD-Series Heavy Duty On-Off Battery Switch - Bulk Packaging 
  • Category: Battery Disconnects
  • Manufacturer: Blue Sea Systems
  • Includes AFD (Alternator Field Disconnect)
  • Ignition protected - safe for installation aboard gasoline powered boats
  • Case design allows surface or rear panel mounting
  • Accepts two 4/0 AWG (95mm²) battery cables
  • 32V D Maximum Voltage
  • 1 Battery Input
  • 2 Switch Positions
  • Continuous rating of 600A. Intermittent rating of 900A (5 minutes)
  • 4/0 AWG (120mm²) Cable size to meet ratings
  • Terminal stud size 1/2" (M12)
  • Terminal stud torque 220 in-lb (24.86 Nm)
  • 1/4" (M6) Screw for mounting
WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

Disconnect Switches

Contact Action
Continuous Amp
Continuous 600A
Voltage Rating
Intermittent Rating
900 Amps (5 min)