SKU: 58754587374

Perko Medium Duty Battery Selector Switch w/ Key Lock

Sale price$88.45 Regular price$98.28
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Description

Perko Medium Duty Battery Selector Switch w/ Key LockMedium Duty Battery Selector Switch w Key Lock Perko's 8501 Series battery selector switches are among the most popular battery switches ever produced. Their use of the traditional Perko bolt circle makes for easy installation, whether new or as a replacement. These switches can be mounted in numerous locations. And as ignition protected switches, they can be installed in the engine rooms of gasoline powered boats. In addition to doing everything a

Medium Duty Battery Selector Switch w/Key Lock

Perko's 8501 Series battery selector switches are among the most popular battery switches ever produced. Their use of the traditional Perko bolt circle makes for easy installation, whether new or as a replacement. These switches can be mounted in numerous locations. And as ignition protected switches, they can be installed in the engine rooms of gasoline powered boats.

In addition to doing everything a battery disconnect switch does, battery selector switches permit battery selection (of two or more batteries) for specific purposes including starting engines, running accessories or even recharging. They allow for the use of one or more batteries in systems with one or more engines and facilitate putting batteries in parallel for emergency starting when one or both batteries are substantially discharged.

Perko battery switches are designed for surface mounting. Standard duty switches have a bright red polycarbonate housing for safety with a large easy-to-turn black knob. The housing of the heavy duty switches are red fiber-reinforced polycarbonate. Selector switches are designed with a "make before break" feature. This allows switching between the "1", the "ALL" and the "2" positions while the engine is running. Models with an "Alternator Field Disconnect" feature offer protection for Non-Unitized Alternators should the switch accidentally be turned to the "OFF" position with the engine running.

Versions of the 8501 Series switches offer additional features such as alternator disconnect and key lock security.

The 90° rotation feature allows users to feel the switches' position in no light situations and the classic shape of the knob makes it easy to turn.

High conductivity studs are long enough to handle more than 1 cable and strong enough for torque needed for secure connections. Optional spacer ring (PN 0462DP0RED) allows for the use of larger cables.

Specifications:

  • Diameter: 5-1/4"
  • Depth: 2-5/8"
  • For use with 6 to 50 Volt Marine Electrical Systems
  • Capacity - 250 AMPS Continuous, 360 AMPS Intermittent
  • 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

Manufacturer Part Numbers: 8502DP
Installation Guide (PDF)
GRP:WRO
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 58754587374

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DeAnn B.
Los Angeles, US
★★★★★ 4
He loves his new ball
Color: Paw Print, Size: 8 inches
My German Shepherd loves it. The only issue we had is that he managed to tear the black handle off within 5 minutes, so we just ended up cutting it completely off. Other than that he loves it.
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Reviewed in the United States on April 1, 2026
A
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Ashley C.
Port Orchard, US
★★★★★ 5
Great Dog Toy!
Color: Paw Print, Size: 8 inches
This soccer ball gets even my LAZY dog moving! It's so fun for them to play with and tug with. Great product, will need to keep re-buying it whenever it gets a hole in it from the rough wear and tear of my pups! :)
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Reviewed in the United States on April 7, 2026
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J.Atwood Compton
New York, US
★★★★★ 5
Very durable ball
Color: Skull Print, Size: 6 inches
It’s hardy 2 dogs can play with it at the same time. The last one lasted almost 2 years with every day play and chewing.
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Reviewed in the United States on April 18, 2026
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kathleen natale
Charlottesville, US
★★★★★ 5
Durable and great value
Color: Paw Print, Size: 8 inches
Best thing we ever bought our Frenchie. It keeps him busy and he gets a great workout in. The tabs make it easier and for me to grab and throw for him. They also allow him to grab them and run with the ball. Only thing he hasn't destroys. Very durable and easy to inflate with enclosed pump.
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Reviewed in the United States on September 9, 2025
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Candy
Birmingham, US
★★★★★ 1
Not what expected
Color: Skull Print, Size: 6 inches
My fur baby had this toy for a couple of hours and broke it and tore it up.
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Reviewed in the United States on May 27, 2026

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