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Silver Battery Doctor 20247-7 master disconnect switch with lockout plate

Battery Doctor

Battery Doctor 20247-7 500A 12V Master Disconnect Switch Lockout

SKU CH-ZJP5-YDG55

A 500A 12V master disconnect switch with lockout plate for secure battery isolation

  • ColorSilver
  • 500A continuous current protects heavy-duty 12V circuits
  • Lockout plate enables safe maintenance lockout
  • Silver finish resists corrosion in harsh environments
  • California Prop 65 warning discloses regulated chemical content
  • Model 20247-7 identifies exact replacement part

500A 12V Master Disconnect

The Battery Doctor 20247-7 is a 500 amp, 12 volt master disconnect switch with an integrated lockout plate. It provides a positive break in the battery circuit for vehicles and equipment. The silver-finished unit is designed for in-line installation on the main power cable.

Lockout Plate Upgrade

This switch adds a lockable plate that secures the disconnect in the off position, a feature absent from basic knife or rotary switches. The upgrade is worth it when maintenance safety procedures require a physical lockout point to prevent accidental reconnection. The 500 amp rating suits heavy-duty starting and charging circuits.

Cable Gauge And Mounting Check

Verify that your existing battery cables match the terminal stud size on the switch before ordering. Confirm there is accessible space along the cable run to mount the switch body and operate the lockout plate. Ensure the 12 volt system voltage matches your vehicle or equipment. California Proposition 65 warnings apply.

Highlights

  • 500A continuous current protects heavy-duty 12V circuits
  • Lockout plate enables safe maintenance lockout
  • Silver finish resists corrosion in harsh environments
  • California Prop 65 warning discloses regulated chemical content
  • Model 20247-7 identifies exact replacement part

Specifications

BrandBATTERY DOCTOR
ColorSilver

Questions about this item

What terminal size does the 500A 12V master disconnect switch accept?

The switch is designed for standard automotive battery posts and cable lugs used on 12 V systems.

Which step is most often missed when fitting the lockout plate on the 20247-7?

Many installers forget to align the lockout tab with the switch slot before tightening the terminal bolts.

How often should the silver contacts on this 500A disconnect be inspected?

Check the contacts at least once a year for corrosion or pitting, and clean them with a wire brush if needed.

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