Single Circuit ON/OFF Battery Disconnect Switch


> Switches a single battery to a single load group
> Tin-plated copper studs for maximum conductivity and corrosion resistance
> Studs accept 3/8″ (M10) ring terminals
> One-piece terminal stud design never loosens over time
> Isolating cover with three snap-off side pieces protects rear contacts and allows wire access in any direction



Cranking Rating: 30 sec. 900A DC
Intermittent Rating: 5 min. 500A DC
Continuous Rating: 300A
DC Terminal Stud, Tin-Plated Copper 3/8”-16 (M10)
Torque 120 in-lb (13.56 N·m) Cable Size to Meet Ratings* 4/0 AWG (120 mm2)
Maximum Voltage Rating 48 Volts DC
Ignition Protected


> CE, RoHS, ISO 8846
> Meets all American Boat and Yacht Council (ABYC) requirements for battery switches
> Meets UL 1500 and SAE J1171 external ignition protection requirements

IP66 – protected against powerful water jets


Switches a single battery to a single load group
>Ignition protected—safe for installation aboard gasoline powered boats
>Case design allows surface, front panel, or rear panel mounting
>Isolating cover with snap-on sections protects rear contacts


Switch Type Single Circuit ON-OFF
Color Red
Switch Positions 2
Battery Combine No
Alternator Field Disconnect No
Maximum Voltage 48V DC
Stud Size 3/8″
Terminal Stud Torque 120 in-lb (13.56 Nm)
Continuous Rating 300A
Intermittent Rating 500A (5 min)
Cranking Rating 30 sec 900A
Battery Inputs 1
Cable Clearance For 4/0 AWG Cables 1.12in (28.45 mm)
Cable Size to Meet Ratings 4/0 AWG (120mm2)
Mounting Holes Accept #10 Screw
Stud Material Tinned Copper
Stud Torque 120 in-lb (13.56 Nm)
Terminal Stud Size 3/8″ – 16 (M10)
Weight 0.65lb (0.29 kg)

Availability: In Stock

1 in stock

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SKU: SFCBS-300-402 Categories: , Brand: