Perko Dual Battery Selector Switch - Cup Mount [8521DPC]

Dual Battery Selector Switch - Cup Mount

The Perko Dual Battery Selector Switch allows the addition of an extra battery for accessories. This switch provides the flexibility of selection between batteries or combined operation of both batteries in parallel for starting or charging. It can also serve as an emergency main disconnect switch in the event of an electrical problem. All models are make before break design and are ignition protected.

Measurements & Dimensions

• Cup Diameter Size: 4-1/2 inches

• Cup Mount Installation Hole Size: 4 inches (unique oval shape designed to mount cleanly in a round hole)

• Face Dimensions: 3-7/8 inches x 3-1/4 inches

• Fastener Screw Size: #10 pan head or round head

• Item Weight: Approx. 1.3 lbs

Specifications & Materials

• Model / MPN: 8521DPC (Figure No. 8521 Series with Cup Mount)

• Body Construction: Red polycarbonate polymer body with an attractive, durable, easy open/close protective cup cover

• Key / Actuator: Removable black polymer actuator key

• Terminals: Nickel-plated terminals with 3/8-inch terminal studs

• System Compatibility: Designed for use with alternators and generators in 6–32 V.D.C. Marine Electrical Systems

• Electrical Ratings:

  • Continuous Rating: 140 Amps

  • Intermittent Rating: 200 Amps (5-minute rating)

  • Starting Rating: 250 Amps (30-second start)

• Switch Positions: 4 positions (Both "Off", Both "On", Battery 1 "On" / Battery 2 "Off", Battery 1 "Off" / Battery 2 "On")

• Safety Features:

  • "Make before break" design allowing switching between banks while running

  • Ignition protected (safe for installation in gasoline-powered engine rooms)

  • Acts as an emergency main disconnect switch during electrical issues

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.