![Perko Heavy Duty Battery Selector Switch w/Alternator Field Disconnect [8603DP] by Perko -](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33120XL.webp?v=1747008099)
27% off
Price history at Lotz Outdoors
Recorded at Lotz Outdoors since Oct 9, 2026: low $236.76 (Oct 9, 2026), high $240.79 (Oct 26, 2026). Last checked Nov 8, 2026.
Product Description
Diameter: 5-1/4" Depth: 2-5/8" Polycarbonate Body with Brass Terminals Ignition Protected For use with 6 to 32 Volt Marine Electrical Systems Capacity - 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent Terminal Stud Size: 5/16" When used with Non-Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running. Specifications: AFD: Yes Lockable: No Positions: 2 Continuous Amperage: 380a Box Dimensions: 4"H x 4"W x 8"L WT: 2.25 lbs UPC: 085226021558 Quick Guide (pdf)
Perko Heavy Duty Battery Selector Switch w/Alternator Field Disconnect [8603DP]
$240.79
$329.49
27% Discount
You save $88.70
In Stock
at Lotz Outdoors
Price checked 4 days ago
Amazon
eBay
Product Details
Brand
Perko
Price history at Lotz Outdoors
Recorded at Lotz Outdoors since Oct 9, 2026: low $236.76 (Oct 9, 2026), high $240.79 (Oct 26, 2026). Last checked Nov 8, 2026.
![Perko Spare Actuator Key f/8521 Battery Selector Switch [8521DP0KEY]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/69971XL.webp?v=1747258674)
![Perko Single Battery Disconnect Switch - Cup Mount [9621DPC]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/69974XL.webp?v=1747258680)
![Perko Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous, 12-32VDC [9601DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/42029XL_052110f5-f460-49d5-8158-b551bed449cb.webp?v=1747017082)
![Perko 9611DP Compact Medium Duty Main Battery Disconnect Switch [9611DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33123XL.webp?v=1747008120)
![Perko Medium Duty Battery Selector Switch - 250A Continuous [8501DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/55851XL.webp?v=1747190882)
![Perko Compact Medium Duty Battery Selector Switch w/o Key Lock [8511DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33118XL.webp?v=1747008086)
![Perko Dual Battery Selector Switch - Cup Mount [8521DPC]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/69970XL.webp?v=1747258668)
![Perko Medium Duty Main Battery Disconnect Switch w/Key Lock [9602DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33121XL.webp?v=1747008106)
![Perko Medium Duty Battery Selector Switch w/Key Lock [8502DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/73252XL.webp?v=1747265753)
![Perko Compact Medium Duty Battery Selector Switch w/Key Lock [8512DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33119XL.webp?v=1747008092)
![Perko 8503DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect w/o Key Lock [8503DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33116XL.webp?v=1747008071)
![Perko Medium Duty Main Battery Disconnect Switch w/Alternator Field Disconnect & Key Lock [9604DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33122XL.webp?v=1747008112)
![Perko 8504DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect & Key Lock [8504DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33117XL.webp?v=1747008079)
![Perko 9703DP Heavy Duty Battery Disconnect Switch w/ Alternator Field Disconnect [9703DP]](https://cdn.shopify.com/s/files/1/0623/5298/2222/files/33125XL.webp?v=1747008126)