Perko 9604DP Alternator Field Disconnect Battery Switch
- Brand:
- Perko
- Part no:
- 9604DP
Image: Fisheries Supply
Where to buy
Specifications
- Positions
- On/off
- Continuous rating
- 250 A
- Intermittent rating
- 360 amps
- Alternator field disconnect
- Yes
The Perko 9604DP is an on/off main battery disconnect with a lock, built with an alternator field disconnect. It is rated for 250 amps continuous and 360 amps intermittent, on systems under 50 volts. The contacts and terminals are copper and brass, with a design meant to protect them. The field disconnect guards the alternator against damage if the switch is turned off with the engine running.
Our take
The 250 amp continuous and 360 amp intermittent ratings set the load this switch is built to carry, and its alternator field disconnect protects the alternator if someone switches it off with the engine running. It is for systems under 50 volts.
From our buying guide
Perko says its selector switches can be switched between 1, ALL and 2 with the engine running, and that they let you put batteries in parallel for emergency starting. Battle Born advises against that connection with its LiFePO4 batteries.
Check before you buy:
- Its continuous and 5-minute ratings suit your system. Perko rates its medium-duty 8501 at 250 A continuous.
- It has an alternator field disconnect if you need one. Perko says its AFD models protect non-unitized alternators if the switch is turned OFF with the engine running.
- If it's going in a gasoline engine space, the maker lists it as ignition protected.