Alternator Field Disconnect (AFD) protects the diodes in the alternator in the event of the switch being switched to the OFF position while the engine is running.
500 Ampere Continuous Rating for inboard gasoline and diesel engines.

Tin-plated copper studs for maximum conductivity and corrosion resistance
Studs accept 1/2" (M12) ring terminals
7/8" stud length accepts multiple cable terminals
Blue Sea Systems one-piece terminal stud design never loosens over time
Case design allows surface or rear panel mounting options
Rated at IP66 - withstands heavy seas, jets of water
Fits most Perko and Guest low amperage battery swich hole patterns
Label with international legends
Tactile indicator conveys knob position by feel

Note: Maximum ratings in Specification Table are when using 4/0 cable.