300A heavy duty marine battery isolator switch with dual circuit 3-position operation and IP66 waterproof rating for reliable marine battery management.

• Simultaneously switches two isolated battery banks or circuits
• May be used to switch positive and negative conductors for required applications
• 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

• Meets all American Boat and Yacht Council (ABYC) requirements for battery switches
• UL Listed - UL 1107 for electric power switches
• Meets UL 1500 and SAE J1171 external ignition protection requirements

Refer to the latest edition of NFPA 302 and/or ABYC E11 Standard for installation information.

• Attach one 4/0 AWG cable per terminal to meet ratings
• Battery cable terminals must be attached under nut and lock washer. Torque 120 in-lb (13.56 N*m)

Any Blue Sea Systems product with which a customer is not satisfied may be returned for a refund or replacement at any time.

We conduct 100% testing before delivery to ensure product quality and reliability.