HD-Series Heavy Selector Battery Switch — 500A, 4‑Position | 4Boats

Robust HD-Series Heavy 4‑position selector battery switch for marine and heavy‑duty electrical systems.

• 4‑position selector; combines or isolates two battery banks
• Continuous rating 500 A; intermittent 700 A (5 min); cranking 1600 A (30 s)
• Maximum voltage 32 V DC
• Accepts 4/0 AWG (120 mm²) cables; cable clearance 27.94 mm (1.10 in)
• Two battery inputs; two cables per terminal required to meet ratings
• Tinned copper M12 terminal studs (1/2 in); terminal stud torque 24.86 N·m (220 in‑lb)
• Mounts with M6 screws (accepts 1/4 in); weight 0.57 kg (1.25 lb)
• Colour: grey; alternator field disconnect: No

* Switches isolate battery banks to all loads or combine battery banks to all loads. ** Alternator Field Disconnect protects alternator diodes if the switch is moved to OFF while the engine is running; if AFD is not used an LED can be fitted to indicate any position except OFF. *** Continuous rating is the maximum current a switch can carry indefinitely. **** Intermittent rating is the maximum current for a specified short period (here 5 minutes). ***** Cranking rating (30 s) relates to starter current surges during engine start and is used for sizing batteries, cables and switches.