HD Series Battery Switches
Up to 600 Amps continuous rating for large diesel engines
Tin-plated copper studs for maximum conductivity and corrosion resistance
Accepts up to 4/0 AWG (120 mm²) battery cables
Studs accept 1/2" (M12) ring terminals
7/8" (22 mm) stud length accepts multiple cable terminals
Blue Sea Systems one-piece terminal stud design never loosens over time
One-piece stainless flange nuts ensure safe and secure connections
Fits most Perko and Guest low amperage battery switch hole patterns
Case design allows surface or rear mounting options
Tactile indicator conveys knob position by feel
* Includes Alternator Field Disconnect (AFD) which protects the diodes in the alternator in the event
of the switch being switched to the OFF position while the engine is running. If the AFD is not
used to protect the alternator, an LED can be connected to the AFD terminals to indicate when
the battery switch is in any position but OFF.
Specifications 3000, 3001 3002, 3003, 11003
Cranking Rating: 30 sec. 1,750A 1,600A
Cranking Rating: 1 min. 1,325A 1,150A
Intermittent Rating: 5 min. 900A 700A
Continuous Rating 600A 500A
Voltage Max. Operating 32V DC 32V DC