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177 Fulford Dr.
Harkers Island, NC 28531
(252) 504-3355
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Switch Battery e ON-OFF with AFD


  • Part #: BLS9004E

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e-Series Battery Switch Single Circuit ON/OFF with Alternator Field Disconnect

Terminal Stud Torque140 in-lbs.(15.82 N.m)
Cable Size to Meet Ratings4/0 (95 mm2)
Terminal Stud, Tin-Plated Copper3/8" (accepts M10 terminal ring)
Inrush Rating: 0.25 sec (10 repeats)*1750 Amperes DC
Cranking Rating: 9.75 sec (10 repeats)*900 Amperes DC
Intermittent Rating: 5 min (UL 1107)600 Amperes DC
Continuous Rating: (UL 1107)350 Amperes DC
Maximum Voltage Rating48 Volts DC
Case MaterialReinforced Polycarbonate
Cable Clearance For 4/0 AWG Cables1.10" (27.9mm)
Weight Lb (Kg)0.95 (0.43)
Agency StandardsUL Listed - UL 1107 Electric Power Switch / Meets UL 1500 and SAE J171 ignition protection requirements

Includes AFD (Alternator Field Disconnect)

  • CE Marked
  • Ignition protected - Safe for installation aboard gasoline powered boats
  • Case design allows surface or rear panel mounting
  • Meets American Boat and Yacht Council (ABYC) requirements for battery switches
  • 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance, accepts 3/8" and M10 ring terminals
  • 7/8" (22.22mm) stud length to accept multiple cable terminals
  • Tactile textures indicate knob position by feel only

  • Uses One Piece design Studs
    Blue Sea Systems Superior One Piece Stud Design

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