Blue Sea System E Series Battery Switch – Dual Circuit & Dual Circuit Plus

350 Amps continuous rated battery switches for simultaneously switching two isolated battery banks or circuits BS-5510E- Simultaneously switches two isolated battery banks or circuits. May be used to switch the positive and negative conductors for required applications BS-5511E(B)- Simultaneously switches two isolated battery banks or combines battery banks to all loads. CAN NOT be used to switch and positive conductors due to its combine feature. 

Key Features

  • Tin-plated copper studs for maximum conductivity and corrosion resistance
  • Accepts up to 4/0 AWG (120 mm²) battery cables
  • Studs accept 3/8″ (M10) ring terminals
  • Fits most Perko and Guest low amperage battery switch hole patterns 

PART NUMBERBS-9001EBS-9002E--BS-11001BS-5510EBS-5511E
DescriptionSwitch Battery e SelectorSwitch Battery e Selector w/AFDSwitch Battery e ON/OFFSwitch Battery e ON/OFF w/AFDSelector 3 PositionDual Circuit™Dual Circuit Plus™
Cranking Rating: 30 sec.1200A1200A1200A1200A1200A700A700A
Intermittent Rating: 5 min.600A600A600A600A600A525A525A
Continuous Rating350A350A350A350A350A350A350A
Voltage Max. Operating32V DC32V DC48V DC48V DC48V DC32V DC32V DC


  • BS-7920B: Battery Switch Identification Label Set